Barbell Front Squat vs Single Leg Leg Extension

Barbell Front Squat vs Single Leg Leg Extension Strength Standards

These bodyweight tables place the barbell front squat and single leg leg extension targets side by side from Novice through Elite. Use them to compare standards, not to force a particular ratio between the lifts.

Find the closest row in the men’s or women’s table. Every target lists Barbell Front Squat / Single Leg Leg Extension, pounds first and kilograms second. Enter your own sets above for exact ratings without testing a true one-rep max.

Men’s Barbell Front Squat vs Single Leg Leg Extension Standards

How to read the table: Find the closest bodyweight, then use the labeled exercise row. Every strength-level entry shows one target with pounds first and kilograms beneath it.

Women’s Barbell Front Squat vs Single Leg Leg Extension Standards

How to read the table: Find the closest bodyweight, then use the labeled exercise row. Every strength-level entry shows one target with pounds first and kilograms beneath it.

How Your Barbell Front Squat vs Single Leg Leg Extension Result Is Calculated

Both lifts are scored independently first: estimated max, bodyweight-adjusted strength level, and progress toward the next level. Those ratings drive the comparison.

1. Estimate a one-rep max from each set

The entered weight is used directly for one rep. With 2–12 reps, both estimates are compared and the lower value is used.

• Epley: weight × (1 + reps ÷ 30)
• Brzycki: weight × 36 ÷ (37 − reps)

For the most useful Barbell Front Squat vs Single Leg Leg Extension comparison, enter clean, difficult sets performed with the same technique and range of motion you use in training. Lower-rep sets usually require less extrapolation.

2. Find the barbell front squat strength level

The standards use the sex-specific front squat thresholds from the individual tool. Targets begin at 190 lb for men and 150 lb for women, then adjust to exact bodyweight with reference target × (user bodyweight ÷ reference bodyweight) to the two-thirds power.

The target rises more slowly than bodyweight so larger lifters are expected to squat more without requiring strength to increase pound for pound.

3. Find the single leg leg extension strength level

The single leg leg extension rating uses its sex-specific exercise standards. Reference targets at 190 lb for men and 150 lb for women are scaled to the entered bodyweight by reference target × (user bodyweight ÷ reference bodyweight) to the two-thirds power.

This adjustment expects larger lifters to move more weight, but it does not increase the target pound for pound with bodyweight.

4. Compare the two results

Strength level decides the comparison first. Matching levels remain Balanced unless progress toward the next target differs by at least 10 points.

A priority result is a standards comparison, not a diagnosis. Differences in technique, fatigue, practice, or set effort may influence it. Age range is recorded anonymously and does not alter these standards.

Enter both sets above to see the estimated maxes, assigned levels, next-level targets, and comparison result.

How Men’s Barbell Front Squat and Single Leg Leg Extension Standards Differ

How to read this chart: Choose a strength level and follow its line across bodyweight. Values show the Single Leg Leg Extension standard minus the Barbell Front Squat standard: zero means equal, above zero means the Single Leg Leg Extension standard is higher, and below zero means the Barbell Front Squat standard is higher. Swipe horizontally on mobile. Use the standards table for exact lb/kg targets.

How Women’s Barbell Front Squat and Single Leg Leg Extension Standards Differ

How to read this chart: Choose a strength level and follow its line across bodyweight. Values show the Single Leg Leg Extension standard minus the Barbell Front Squat standard: zero means equal, above zero means the Single Leg Leg Extension standard is higher, and below zero means the Barbell Front Squat standard is higher. Swipe horizontally on mobile. Use the standards table for exact lb/kg targets.

Barbell Front Squat and Single Leg Leg Extension Exercises Used by This Calculator

The calculator expects repeatable barbell front squat and single leg leg extension results. Follow each exercise definition below so the two ratings are based on valid tests. Use strict, repeatable Barbell Front Squat and Single Leg Leg Extension tests that follow each exercise’s setup, range of motion, equipment, and load rules. Do not mix variations, assistance, partial range, momentum, or different load conventions.

Keep the bar in the front rack through full depth

Enter the bar plus all plates. Support the bar across the front of the shoulders, descend under control until the hip crease is below the top of the knee, and stand to full lockout while retaining the front rack. Do not enter per-side plates, back squats, Zercher or goblet squats, Smith or machine squats, partial reps, assisted reps, or reps that lose the front rack.

Use the Single Leg Leg Extension setup and load convention

Entered load is the selected or loaded machine resistance used for strict one-leg leg extension reps on the same machine setup. Total valid reps across both legs combined. Extend the working knee through a controlled range to a clear knee-extension finish, then return under control to the same start range without bouncing the stack. A valid finish requires controlled knee extension without hip lift, thigh shift, trunk heave, or help from the nonworking leg. Consistent setup, range, and finish quality across the entered set. No substituted exercise or assisted reps.

Enter one recent Barbell Front Squat result and one recent Single Leg Leg Extension result

First lift: total barbell weight and 1–12 strict reps. Second lift: weight used and 1–12 strict reps. Pounds or kilograms.

Related Tools

• Barbell Front Squat — View the individual Barbell Front Squat standards and next strength-level target.
• Single Leg Leg Extension — View the individual Single Leg Leg Extension standards and next strength-level target.
• Leg Extension — Use this related standards tool to examine a closely related exercise without mixing its result into this comparison.
• Single Leg Machine Leg Press — Use this related standards tool to examine a closely related exercise without mixing its result into this comparison.
• Leg Press (45° Sled) — Use this related standards tool to examine a closely related exercise without mixing its result into this comparison.
• Machine Hack Squat — Use this related standards tool to examine a closely related exercise without mixing its result into this comparison.