Stiff Leg Deadlift Strength Standards Calculator
A strong stiff-leg deadlift strength standard is typically around 0.83×–1.47× your bodyweight — instantly see how your strength ranks against real standards.
Use your bodyweight along with the weight you lifted and the number of strict reps you can complete while keeping a fixed knee angle and reaching hamstring-limited depth.
The calculator shows your strength level, how your estimated 1RM compares to your bodyweight, how much you need to lift to reach the next tier, and saves your results so you can track progress.
Check your result now and see exactly how much weight you need to add to reach your next strength level.
Understanding Your Stiff-Leg Deadlift Strength Score
Your stiff-leg deadlift strength score shows how your hinge strength ranks by comparing your estimated 1RM to your bodyweight, with Intermediate starting around 0.83× and Elite at 1.47× or higher.
The calculator takes the weight you lifted and reps completed, estimates your one-rep max using the Epley formula, then compares that number to your bodyweight to assign a strength tier. For example, if you lift 225 lb for 8 reps at 180 lb bodyweight, your estimated 1RM is about 285 lb, which equals roughly 1.58× your bodyweight — placing you in the Elite tier for men.
This score reflects how much load you can control while your hamstrings are fully stretched with only a slight knee bend. The bar stays in contact with your legs as your hips move back, and the rep ends when hamstring tension stops the descent without your spine rounding.
The same performance can represent very different strength levels depending on bodyweight. That same 285 lb estimated 1RM is Elite at 180 lb, but only around Advanced for a 220 lb lifter because the heavier lifter is moving less weight relative to their size.
Execution also changes the score. A strict rep uses soft knees with no forward knee travel and stops at hamstring-limited depth. If your knees bend more during the set, the lift turns into a Romanian deadlift, which allows more weight and inflates your estimated 1RM — making the score invalid for stiff-leg standards.
This score exposes a different strength quality than knee-dominant pulls. You can have a big conventional deadlift and still fall short here if you lose position when your hamstrings are lengthened or let your knees drift forward under load.
Use your result to see where your hinge strength actually sits, then aim to move up a tier by adding load without losing depth — for example, taking a 0.83× ratio to 1.15× means lifting more weight while holding the same stretched hamstring position and bar path.
Stiff-Leg Deadlift Strength Standards
Stiff-leg deadlift strength standards classify your hinge strength using your estimated 1RM relative to your bodyweight, with Intermediate starting at 0.83× for men and 0.60× for women.
To use the table, start with your bodyweight, then match your estimated 1RM to the correct range. For example, if you weigh 180 lb and your estimated 1RM is 180 lb, that is 1.00× bodyweight, which places you in Intermediate. If you weigh 220 lb with that same 180 lb estimated 1RM, that is 0.82×, which falls in Novice.
Men
| Bodyweight | Beginner (<0.65×) | Novice (0.65–0.83×) | Intermediate (0.83–1.15×) | Advanced (1.15–1.47×) | Elite (≥1.47×) |
|---|---|---|---|---|---|
| 140 lb | <91 | 91–116 | 116–161 | 161–206 | ≥206 |
| 150 lb | <98 | 98–125 | 125–173 | 173–221 | ≥221 |
| 160 lb | <104 | 104–133 | 133–184 | 184–235 | ≥235 |
| 170 lb | <111 | 111–141 | 141–196 | 196–250 | ≥250 |
| 180 lb | <117 | 117–149 | 149–207 | 207–265 | ≥265 |
| 190 lb | <124 | 124–158 | 158–219 | 219–279 | ≥279 |
| 200 lb | <130 | 130–166 | 166–230 | 230–294 | ≥294 |
| 210 lb | <137 | 137–174 | 174–242 | 242–309 | ≥309 |
| 220 lb | <143 | 143–183 | 183–253 | 253–323 | ≥323 |
| 230 lb | <150 | 150–191 | 191–265 | 265–338 | ≥338 |
| 240 lb | <156 | 156–199 | 199–276 | 276–353 | ≥353 |
| 250 lb | <163 | 163–208 | 208–288 | 288–368 | ≥368 |
Women
| Bodyweight | Beginner (<0.46×) | Novice (0.46–0.60×) | Intermediate (0.60–0.83×) | Advanced (0.83–1.10×) | Elite (≥1.10×) |
|---|---|---|---|---|---|
| 100 lb | <46 | 46–60 | 60–83 | 83–110 | ≥110 |
| 110 lb | <51 | 51–66 | 66–91 | 91–121 | ≥121 |
| 120 lb | <55 | 55–72 | 72–100 | 100–132 | ≥132 |
| 130 lb | <60 | 60–78 | 78–108 | 108–143 | ≥143 |
| 140 lb | <64 | 64–84 | 84–116 | 116–154 | ≥154 |
| 150 lb | <69 | 69–90 | 90–125 | 125–165 | ≥165 |
| 160 lb | <74 | 74–96 | 96–133 | 133–176 | ≥176 |
| 170 lb | <78 | 78–102 | 102–141 | 141–187 | ≥187 |
| 180 lb | <83 | 83–108 | 108–149 | 149–198 | ≥198 |
| 190 lb | <87 | 87–114 | 114–158 | 158–209 | ≥209 |
| 200 lb | <92 | 92–120 | 120–166 | 166–220 | ≥220 |
For another example, if you lift 185 lb for 10 reps, your estimated 1RM is about 247 lb. At 160 lb bodyweight, that is 1.54×, which places you in Elite. At 200 lb bodyweight, that same lift is 1.24×, which falls in Advanced.
Most lifters never reach these numbers with strict hinge mechanics.
This lift behaves differently because once your hips are pushed back and your hamstrings are fully loaded, the bar can only move if you maintain that stretched position while keeping it in contact with your legs—there is no knee drive to help you finish the rep.
If your knees bend more or your range shortens as the set gets heavier, you can move more weight, but the lift is no longer a stiff-leg deadlift. That is why strict hinge position, not just the number on the bar, determines where you actually fall in these standards.
Use your result above, find your bodyweight, and see exactly how many pounds you need to move up to the next level.
What Is a “Good” Stiff-Leg Deadlift?
A good stiff-leg deadlift is typically at least 0.83× your bodyweight for men and 0.60× for women, which places you in the Intermediate tier or higher.
In a typical gym, most lifters fall below this because they lose tension near the bottom or allow more knee bend as the weight increases. If someone is lifting 225 lb for controlled reps at 160 lb bodyweight, that is about 1.40× bodyweight, which is clearly Advanced and stands out because most people cannot hold that position under load.
What separates “good” from just moving weight is whether you can maintain the same hinge position on every rep. If your hips keep moving back, your knees stay nearly fixed, and the bar stays in contact with your legs, that result reflects real strength. If your knees drift forward or the range shortens, the same set would fall into a lower tier if done strictly.
Bodyweight changes what “good” means. That same 225 lb lift is 1.50× for a 150 lb lifter (Elite), but only about 1.02× for a 220 lb lifter (Intermediate). The load does not change, but the strength level does.
A key diagnostic for this lift is where you lose position. If the bar drifts away from your legs, your hips stop moving back, or your knees start bending more as the set gets harder, your hinge strength is the limiting factor—not your overall pulling strength.
If your second and third sets drop off because your knees bend more or your depth shortens, that is not fatigue alone—it is a loss of position that lowers your true strength level.
Use the calculator to see whether your current ratio falls into the “good” range, then work toward the next tier by increasing weight while holding the same hinge depth and bar path on every rep.
Average Stiff-Leg Deadlift Strength by Experience Level
Average stiff-leg deadlift strength increases from under 0.65× bodyweight at Beginner to 1.47× or higher at Elite for men, with similar proportional ranges for women based on hinge strength and hamstring control.
| Experience Level | Men (× Bodyweight) | Women (× Bodyweight) |
|---|---|---|
| Beginner | <0.65× | <0.46× |
| Novice | 0.65–0.83× | 0.46–0.60× |
| Intermediate | 0.83–1.15× | 0.60–0.83× |
| Advanced | 1.15–1.47× | 0.83–1.10× |
| Elite | ≥1.47× | ≥1.10× |
For example, a 180 lb lifter with a 225 lb estimated 1RM is at 1.25× bodyweight, which places them in the Advanced range. That same 225 lb result at 220 lb bodyweight is about 1.02×, which falls into Intermediate.
Experience level in this lift is determined by how well you can hold a fixed knee angle and maintain hamstring tension as the bar moves down your legs, not just how long you have been training. Many lifters spend years lifting but still lose position as soon as the weight gets challenging.
What actually improves as you move up levels is your ability to stay tight in the stretched position while adding load. Beginners often stop early or bend their knees more, while Advanced lifters can reach deeper hinge positions and stand back up without the bar drifting or the knees changing.
Execution can distort these levels. If a lifter bends their knees more as the weight increases, they can move into a higher tier on paper, but the lift becomes a Romanian deadlift and no longer reflects stiff-leg strength.
The main limiter early on is usually the ability to stay in position at the bottom, while higher levels depend on producing force without losing that position. Strength here is not just about moving the bar, but controlling it while your hamstrings are fully loaded.
Use your ratio to identify your current level, then focus on improving hinge control and load together to move up to the next category.
Test Your Stiff-Leg Deadlift Strength
To test your stiff-leg deadlift strength, enter your bodyweight, the weight you lifted, and the number of reps you completed using strict hinge mechanics.
A proper test set should use a load you can control for 5–10 reps while keeping minimal knee bend and stopping each rep when your hamstrings reach full tension. For example, lifting 185 lb for 10 reps produces an estimated 1RM of about 247 lb. At 180 lb bodyweight, that equals roughly 1.37×, which places you in Advanced.
If your knees start bending more or your depth shortens as the set gets harder, the result becomes artificially high because you are no longer holding the same hinge position. Each rep should look the same, with your hips moving back and the bar staying close to your legs.
Bodyweight affects the interpretation of your result. A 247 lb estimated 1RM is Advanced for a 180 lb lifter, but only around Intermediate for a 220 lb lifter.
A controlled test set gives a more accurate result than chasing a heavier number with changing form. A slightly lighter set done with consistent depth and knee position will produce a lower but more accurate estimate than a heavier set where the movement shifts.
Enter your best recent set into the calculator above, then use your result to track progress and move toward the next strength tier.
How the Stiff-Leg Deadlift Calculator Works
The stiff-leg deadlift calculator estimates your one-rep max using the Epley formula and then compares that number to your bodyweight to determine your strength tier.
When you enter your weight and reps, the calculator uses this equation: Estimated 1RM = weight × (1 + reps ÷ 30). For example, if you lift 225 lb for 8 reps, your estimated 1RM is about 285 lb. At 180 lb bodyweight, that equals 1.58×, which places you in the Elite tier.
The ratio matters because it standardizes your strength across body sizes. That same 285 lb estimated 1RM is Elite at 180 lb, but only about 1.30× at 220 lb bodyweight, which places it in Advanced.
Results can be inflated if your range of motion changes. If your knees bend more or your hips stop moving back as the set gets harder, the bar travels a shorter distance and allows more weight, which increases your estimated 1RM without reflecting true hinge strength.
A strict stiff-leg deadlift keeps limited knee flexion, the bar in contact with your legs, and stops each rep when hamstring tension limits the descent. If those conditions change, the calculation is still mathematically correct, but it no longer represents the same movement.
This is why two sets with the same weight and reps can produce very different real-world strength results. A strict 225 lb × 8 set reflects true hinge strength, while a looser set with more knee bend produces a higher estimate that belongs to a different lift.
Even though hinge depth can vary slightly between lifters, your result is only meaningful if your own reps stay consistent. If your depth or knee angle changes between tests, your numbers may go up without any real increase in hinge strength.
Enter your best strict set above, then use your estimated 1RM and ratio to see your current level and track your progress toward the next tier.
Proper Stiff-Leg Deadlift Testing Standards
Proper stiff-leg deadlift testing requires keeping a fixed knee angle, maintaining hamstring tension, and using the same hinge depth on every rep so your result reflects true hinge strength.
- Start from the floor: Each rep begins with the bar on the ground and your knees slightly bent but fixed.
- Push your hips back: Lower the bar by hinging, not bending your knees, until your hamstrings limit further descent.
- Keep the bar close: The bar should stay in contact with your legs throughout the lift.
- Stop at hamstring limit: Depth is defined by tension in your hamstrings, not how low the bar goes.
- Stand to full lockout: Finish each rep with hips and knees fully extended.
- Use the same depth every rep: Each repetition should match the previous one in range and position.
A strict test might look like 185 lb for 10 reps with the same hinge depth and knee angle each time, producing an estimated 1RM of about 247 lb. At 180 lb bodyweight, that equals 1.37×, which places you in Advanced.
A loose test might use the same 185 lb but with increasing knee bend as fatigue sets in, allowing more reps or heavier weight. That inflates your result but no longer reflects stiff-leg deadlift strength because the movement shifts toward a Romanian deadlift.
Bodyweight still determines how your result is classified. That same 247 lb estimated 1RM is Advanced at 180 lb, but only Intermediate at 220 lb.
If your hinge depth gets shorter or your knees bend more in later tests, your numbers may go up, but your actual hinge strength has not improved—you are just changing the movement to make the lift easier.
To track real progress, repeat the same setup, hinge depth, and knee position every time you test so changes in your result reflect actual improvements in strength.
Use these standards every time you test, then enter your result above to measure your progress accurately and move toward the next strength tier.
How to Improve Your Stiff-Leg Deadlift
To improve your stiff-leg deadlift, you need to increase how much weight you can control while maintaining a fixed knee angle and full hamstring tension at the bottom of the hinge.
Progression in this lift comes from adding load without changing position. For example, if your current best set is 185 lb × 8 at 180 lb bodyweight (about 1.17×, Advanced), moving to 205 lb × 8 with the same hinge depth raises your estimated 1RM and pushes you closer to the next tier.
The most common mistake is turning the lift into a Romanian deadlift as the weight increases. A strict 185 lb × 8 set at 180 lb bodyweight produces about a 1.17× ratio, but if you repeat the set with more knee bend and reduced stretch, you may handle 205 lb × 8, which produces a higher estimated 1RM—but that result is inflated and no longer reflects stiff-leg deadlift strength.
Your limiting factor determines how you should progress. If you lose position at the bottom, your focus should be on holding tension longer and reaching consistent depth. If you can reach depth but struggle to stand back up, your limiting factor is force production in that stretched position.
If the bar drifts away from your legs or your knees start bending more as the weight increases, that is not just fatigue—it is a loss of hinge position that limits your true strength.
Position strength matters more than total load. Being able to control 185 lb through full hamstring stretch is more valuable than lifting 225 lb with shortened range and changing knee angle.
Over time, what improves is your ability to stay tight as the bar moves down your legs and produce force without losing that position. That is what allows you to move from Intermediate to Advanced and beyond.
Use your current ratio as your baseline, then aim to increase weight while keeping the same hinge depth, knee position, and bar path on every rep.
Elite Stiff-Leg Deadlift Strength Levels
Elite stiff-leg deadlift strength starts at 1.47× bodyweight for men and 1.10× for women, with top lifters reaching 1.85× or higher when the lift is performed strictly.
At this level, you can control heavy loads while keeping minimal knee bend and maintaining hamstring tension through the full hinge. For example, a 180 lb lifter with a 265 lb estimated 1RM reaches 1.47×, which marks the start of Elite strength.
Execution matters even more at this level. A strict 265 lb estimated 1RM reflects true hinge strength, while a heavier number achieved with more knee bend or reduced range does not meet Elite standards for this lift. For example, lifting 315 lb with shortened range or increased knee bend may appear stronger, but it no longer represents a stiff-leg deadlift.
What separates Elite from Advanced is the ability to hold the same hinge position under heavier load. Advanced lifters can reach the bottom position, but Elite lifters can stay there, keep the bar close, and stand back up without any change in knee angle or depth.
This is what Elite actually looks like: the bar stays in contact with your legs, your knees remain nearly fixed, and every rep reaches the same hamstring-limited depth even as the weight increases.
Social media often shows heavier lifts labeled as stiff-leg deadlifts, but many of those sets involve more knee bend or shortened range of motion. That allows more weight but changes the movement, which is why strict standards produce lower but more meaningful numbers.
This level also exposes imbalances. A lifter may have a strong conventional deadlift but fall short of Elite here if they cannot maintain position when the hamstrings are fully loaded.
Use your ratio to see how close you are to the Elite threshold, then focus on adding weight without losing hinge position to reach and exceed that level.
Stiff-Leg Deadlift Strength Compared to Other Lifts
Stiff-leg deadlift strength is lower than Romanian and conventional deadlifts because it removes knee drive and places the load entirely on your ability to hold tension in a stretched hinge position.
| Lift | Primary Limiter | Typical Strength Level (× Bodyweight) |
|---|---|---|
| Stiff-Leg Deadlift | Hamstring tension + hinge control | 0.83–1.47× |
| Romanian Deadlift | Hamstrings + some knee flexion | 1.00–1.80× |
| Conventional Deadlift | Quads + hips + back | 1.50–2.50×+ |
For example, a 180 lb lifter with a 285 lb estimated 1RM in the stiff-leg deadlift is at 1.58×, which is Elite. That same lifter might lift 315–365 lb in a Romanian deadlift and 405 lb or more in a conventional deadlift because those lifts allow more knee bend and force contribution from the quads.
Strict vs loose execution makes the difference clear. A strict 285 lb estimated 1RM at 180 lb bodyweight equals 1.58× and reflects true hinge strength, but if that same lifter performs 315 lb with more knee bend and reduced stretch, the number is higher but inflated and no longer represents a stiff-leg deadlift.
Bodyweight still affects how these comparisons are interpreted. A 285 lb stiff-leg deadlift is Elite at 180 lb bodyweight, but only Advanced at 220 lb, even though the absolute weight is the same.
The key difference is where the lift breaks down. If your stiff-leg deadlift lags behind your other pulls, the issue is not total strength—it is your inability to hold position when your hamstrings are fully loaded.
Comparing your stiff-leg deadlift to other lifts helps identify imbalances. If your Romanian or conventional deadlift is much higher but your stiff-leg deadlift stays low, your limitation is hinge control and hamstring strength under stretch.
Use these comparisons to understand where your strength is coming from, then focus on improving your stiff-leg deadlift without relying on knee bend to close the gap.
Milestones in Stiff-Leg Deadlift Strength
Stiff-leg deadlift milestones are best tracked using bodyweight ratios, with key targets at 1.0×, 1.15×, 1.47×, and 1.85× for men, and proportionally lower thresholds for women.
| Milestone | Men (× Bodyweight) | Women (× Bodyweight) | What It Represents |
|---|---|---|---|
| Baseline Strength | 1.0× | 0.75× | Solid hinge control with consistent depth |
| Advanced Threshold | 1.15× | 0.83× | Strong position under load |
| Elite Entry | 1.47× | 1.10× | Full control at high load |
| Stretch Benchmark | 1.85× | 1.33× | Top-tier hinge strength |
For example, a 180 lb lifter reaching a 180 lb estimated 1RM hits 1.0× bodyweight, which reflects solid baseline hinge strength. Moving to 207 lb (1.15×) places them in Advanced, while reaching 265 lb (1.47×) marks Elite.
Strict execution determines whether these milestones are meaningful. A strict 225 lb estimated 1RM at 180 lb bodyweight equals 1.25× and reflects real progress, but if that same lifter performs 275 lb with more knee bend or shortened range, the higher number is inflated and does not represent a true milestone.
Bodyweight affects how these milestones are interpreted. A 225 lb estimated 1RM is 1.25× at 180 lb bodyweight (Advanced), but only about 1.02× at 220 lb (Intermediate).
Misleading milestones usually come from changes in position. If your knees bend more or your depth shortens as the weight increases, you may reach higher numbers, but you are not progressing in the stiff-leg deadlift.
Real milestone achievement means reaching each ratio with the same hinge depth, fixed knee angle, and bar path. If those do not change as the weight increases, the milestone reflects true improvement.
Use these milestones to track your progress, then focus on reaching each level with strict form before moving to the next.
Where These Strength Standards Come From
Stiff-leg deadlift strength standards are derived from Romanian deadlift data with an approximate 8% reduction to reflect the stricter hinge position and lower load ceiling of the movement.
| Source Factor | Adjustment | Reason |
|---|---|---|
| Romanian Deadlift Norms | Baseline | Closest comparable hinge pattern |
| Load Reduction | ~8% lower | Less knee bend reduces load capacity |
| Range of Motion | Hamstring-limited | Stops at stretch, not bar height |
| Execution Standard | Strict hinge only | No knee drift or shortened reps allowed |
The key difference is that the stiff-leg deadlift removes most knee flexion, which limits how much weight you can lift compared to other hinge variations. This is why the ratios are slightly lower than Romanian deadlift standards.
Strict vs loose execution changes how these standards apply. A strict 225 lb estimated 1RM at 180 lb bodyweight equals 1.25× and reflects real hinge strength, but if that same lift is performed at 255 lb with more knee bend or reduced depth, the higher number is inflated and no longer represents the same movement.
Bodyweight still determines how results are classified. That same 225 lb estimated 1RM is Advanced at 180 lb bodyweight, but only Intermediate at 220 lb.
Standards depend on how the lift is defined. If a site allows more knee bend or shorter ranges of motion, the reported numbers will be higher because the movement is easier to load.
This is why numbers differ across sites. Two lifters may appear to have the same strength on paper, but if one uses strict hinge mechanics and the other uses a looser variation, the results are not comparable.
The standards here are based on strict hinge execution, where depth is limited by hamstring tension and each rep follows the same position. This produces lower numbers than looser definitions, but more accurate comparisons of real hinge strength.
Use these standards as a consistent reference, then focus on improving your ratio using the same execution rules so your progress reflects real strength gains.
Related Tools
Use these tools to compare your stiff-leg deadlift to other hinge variations and understand how your strength changes when knee bend, balance, and total-body involvement are introduced.
- Romanian Deadlift Strength Standards — When slight knee bend is allowed, most lifters can handle more weight than in a strict stiff-leg deadlift. This comparison shows how much of your strength is limited by position versus total load capacity. Look at your Romanian deadlift standard to see how much strength you gain when the hinge is less restricted.
- Romanian Deadlift 1 Rep Max Calculator — Instead of being limited by end-range hamstring tension, this variation lets you load the hinge more aggressively. The result helps you separate position-limited strength from overall force production. Enter a recent set here to estimate your max in a less restricted hinge pattern.
- Single-Leg RDL Strength Standards — If one side is weaker or less stable, it will show up here before it limits your bilateral lifts. Differences between sides often explain why you lose position at the bottom of a stiff-leg deadlift. Test each leg to uncover imbalances that are holding your hinge strength back.
- Deadlift Strength Standards Calculator — This lift uses full knee drive and total-body force, which allows significantly higher numbers than a strict hinge. If your deadlift is much stronger than your stiff-leg deadlift, your limitation is hinge control under stretch. Compare your numbers to see whether position or total strength is your limiting factor.
- Deadlift 1 RM Calculator — This gives you your top-end pulling strength when the movement is no longer limited by hinge position or hamstring stretch. It provides a clear ceiling for how much force you can produce in a full deadlift. Calculate your max to understand your highest possible pulling output.
Use these tools together to see whether your limitation is hinge control, hamstring strength under stretch, or total-body pulling strength, then focus your training on closing that gap.
Frequently Asked Questions
What is a good stiff-leg deadlift for my bodyweight?
A good stiff-leg deadlift is typically at least 0.83× your bodyweight for men and 0.60× for women, which places you in the Intermediate tier or higher. Lifting 225 lb for 8 reps produces an estimated 1RM of about 285 lb, which is 1.58× at 180 lb bodyweight (Elite), but only about 1.30× at 220 lb (Advanced). If that same set is done with more knee movement or reduced stretch, the number may go up, but it no longer reflects stiff-leg deadlift strength. The defining factor is reaching consistent depth where hamstring tension limits the descent while the knee angle stays fixed. Enter your numbers above to see exactly where you rank.
How do I calculate my stiff-leg deadlift 1RM?
You calculate your stiff-leg deadlift 1RM using the Epley formula: weight × (1 + reps ÷ 30). A set of 185 lb for 10 reps gives an estimated 1RM of about 247 lb, which is 1.37× at 180 lb bodyweight (Advanced). If you repeat the set with more knee flexion and lift 205 lb × 10, the estimate increases, but the result is inflated because the movement has changed. The calculation is only meaningful when each rep maintains the same hinge depth and hamstring tension. Use the calculator above to get your exact result instantly.
Why is my stiff-leg deadlift so much lower than my deadlift?
Your stiff-leg deadlift is lower because it removes knee drive and limits the lift to what you can control in a stretched hinge position. A 180 lb lifter might have a 285 lb stiff-leg deadlift (1.58×, Elite) but pull 405 lb conventionally because the quads and hips contribute more. If your numbers increase when you allow more knee bend, that is not added strength—it is a different movement. The limiter in a strict stiff-leg deadlift is your ability to hold tension at full stretch, not your total pulling capacity. Compare your ratio above to see how much of your strength is position-limited.
Is my stiff-leg deadlift strong for my weight?
Your stiff-leg deadlift is strong if your estimated 1RM places you in the Intermediate tier or higher relative to your bodyweight. A 247 lb estimated 1RM is 1.37× at 180 lb (Advanced), but only about 1.12× at 220 lb (Intermediate). If that number comes from reps where position changes under fatigue, it may overstate your strength. What matters is how much weight you can control at full hamstring stretch with consistent mechanics. Use the calculator above to see your exact classification.
What counts as a strict stiff-leg deadlift rep?
A strict stiff-leg deadlift rep keeps minimal knee bend, maintains bar contact with the legs, and stops when hamstring tension limits further descent. A set like 185 lb × 8 with consistent depth produces a valid estimate, but if later reps shift position or lose stretch, the same set becomes inflated. At 180 lb bodyweight, that difference can change your classification by an entire tier. The key is that depth is defined by tension, not how low the bar travels. Use strict reps so your result reflects real hinge strength.
What muscles limit the stiff-leg deadlift the most?
The stiff-leg deadlift is primarily limited by your hamstrings’ ability to produce force while fully stretched and your ability to hold a stable hinge position. For example, lifting 185 lb × 8 at 180 lb bodyweight gives about a 1.17× ratio, but if your hamstrings cannot maintain tension at the bottom, the bar will drift or your knees will bend to compensate. If you repeat the set with altered position and reach 205 lb × 8, the higher number is inflated and no longer reflects true hamstring-driven strength. At heavier bodyweights, the same load represents a lower ratio, which means stronger hamstrings relative to bodyweight are required to reach higher tiers. The limiting factor is not just muscle strength, but how well you can maintain tension in the stretched position throughout the lift.
How does bodyweight affect stiff-leg deadlift strength?
Bodyweight determines your strength level because your estimated 1RM is divided by your bodyweight to create a ratio. A 285 lb estimated 1RM is 1.58× at 180 lb (Elite), but only 1.30× at 220 lb (Advanced). If two lifters use different depth or hinge positions, their numbers are not directly comparable even if the weight matches. The standard measures how much load you can control relative to your size with consistent mechanics. Use the calculator to see how your strength changes when bodyweight is factored in.
Should I feel stiff-leg deadlifts in my hamstrings or lower back?
You should feel stiff-leg deadlifts primarily in your hamstrings, with your lower back stabilizing the position. If your hamstrings are loaded at the bottom and you can maintain that tension, the lift is being performed correctly. If instead you feel your lower back taking over, your hips may not be moving back far enough or your position is breaking down under load. For example, lifting 185 lb × 8 with strong hamstring tension reflects proper execution, but if the same set shifts into your lower back as the reps progress, the result becomes less reliable. At higher bodyweights, maintaining hamstring tension becomes even more important to keep your ratio accurate. Focus on reaching depth where your hamstrings are fully stretched without losing position.
How much should I stiff-leg deadlift compared to my regular deadlift?
Your stiff-leg deadlift is typically much lower than your regular deadlift because it removes knee contribution and limits force production to the hinge. A 180 lb lifter might have a 285 lb stiff-leg deadlift (1.58×) and a 405 lb conventional deadlift, showing a large gap between position-limited and total strength. If your stiff-leg numbers rise closer to your deadlift when your technique changes, that increase is not valid for this lift. The difference between the two helps identify whether your limitation is hinge control or overall strength. Use the calculator above to track how your ratio improves over time.