Barbell Back Squat vs Isometric Barbell Back Squat

Compare your barbell squat and isometric barbell back squat against strength standards for your sex, age range, and bodyweight. See strength levels, next targets, and priority.

First exercise: Total barbell weight and a whole number from 1 to 12 reps. Second exercise: Barbell load and Hold time (seconds). Use the units shown. For the first exercise, keep the bar high on the traps, descend until the hip crease passes below the top of the knee, and stand to full hip and knee extension. For the second exercise, use only the strict loaded hold described here; unloaded holds, assisted holds, substituted movements, or adjacent exercise variations are outside this standard. Each exercise uses its own measurement type; measurements are never converted into one another. Age range is saved for anonymous usage reports and does not change the standards.

Barbell Squat vs Isometric Barbell Back Squat Strength Standards

The men’s and women’s tables show the exact Novice-through-Elite targets for both exercises. Weight-based targets use bodyweight and display actual pounds and kilograms. Repetition and time standards keep their exercise-specific units and use age only when the individual exercise standards require it.

Age and bodyweight are never combined as row dimensions. Internal bodyweight-ratio scores are never displayed. When the exercises use unlike measurements, the table presents an explicit reference crosswalk instead of inventing a conversion.

Men’s Barbell Squat vs Isometric Barbell Back Squat 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 at the stated reference hold time.

Men’s Barbell Squat vs Isometric Barbell Back Squat standards
BodyweightExerciseNoviceIntermediateAdvancedElite
120 lb54.4 kgBarbell Squat244 lb110.7 kg278 lb126.1 kg314 lb142.4 kg347 lb157.4 kg
Isometric Barbell Back Squat30 lb13.6 kg at 60 sec60 lb27.2 kg at 60 sec96 lb43.5 kg at 60 sec132 lb59.9 kg at 60 sec
130 lb59 kgBarbell Squat258 lb117 kg293 lb132.9 kg332 lb150.6 kg366 lb166 kg
Isometric Barbell Back Squat32.5 lb14.7 kg at 60 sec65 lb29.5 kg at 60 sec104 lb47.2 kg at 60 sec143 lb64.9 kg at 60 sec
140 lb63.5 kgBarbell Squat271 lb122.9 kg308 lb139.7 kg348 lb157.9 kg384 lb174.2 kg
Isometric Barbell Back Squat35 lb15.9 kg at 60 sec70 lb31.8 kg at 60 sec112 lb50.8 kg at 60 sec154 lb69.9 kg at 60 sec
150 lb68 kgBarbell Squat284 lb128.8 kg322 lb146.1 kg365 lb165.6 kg402 lb182.3 kg
Isometric Barbell Back Squat37.5 lb17 kg at 60 sec75 lb34 kg at 60 sec120 lb54.4 kg at 60 sec165 lb74.8 kg at 60 sec
160 lb72.6 kgBarbell Squat296 lb134.3 kg336 lb152.4 kg381 lb172.8 kg420 lb190.5 kg
Isometric Barbell Back Squat40 lb18.1 kg at 60 sec80 lb36.3 kg at 60 sec128 lb58.1 kg at 60 sec176 lb79.8 kg at 60 sec
170 lb77.1 kgBarbell Squat308 lb139.7 kg350 lb158.8 kg396 lb179.6 kg437 lb198.2 kg
Isometric Barbell Back Squat42.5 lb19.3 kg at 60 sec85 lb38.6 kg at 60 sec136 lb61.7 kg at 60 sec187 lb84.8 kg at 60 sec
180 lb81.6 kgBarbell Squat320 lb145.1 kg364 lb165.1 kg412 lb186.9 kg454 lb205.9 kg
Isometric Barbell Back Squat45 lb20.4 kg at 60 sec90 lb40.8 kg at 60 sec144 lb65.3 kg at 60 sec198 lb89.8 kg at 60 sec
190 lb86.2 kgBarbell Squat332 lb150.6 kg377 lb171 kg427 lb193.7 kg471 lb213.6 kg
Isometric Barbell Back Squat47.5 lb21.5 kg at 60 sec95 lb43.1 kg at 60 sec152 lb68.9 kg at 60 sec209 lb94.8 kg at 60 sec
200 lb90.7 kgBarbell Squat344 lb156 kg390 lb176.9 kg442 lb200.5 kg487 lb220.9 kg
Isometric Barbell Back Squat50 lb22.7 kg at 60 sec100 lb45.4 kg at 60 sec160 lb72.6 kg at 60 sec220 lb99.8 kg at 60 sec
210 lb95.3 kgBarbell Squat355 lb161 kg403 lb182.8 kg456 lb206.8 kg503 lb228.2 kg
Isometric Barbell Back Squat52.5 lb23.8 kg at 60 sec105 lb47.6 kg at 60 sec168 lb76.2 kg at 60 sec231 lb104.8 kg at 60 sec
220 lb99.8 kgBarbell Squat366 lb166 kg416 lb188.7 kg471 lb213.6 kg519 lb235.4 kg
Isometric Barbell Back Squat55 lb24.9 kg at 60 sec110 lb49.9 kg at 60 sec176 lb79.8 kg at 60 sec242 lb109.8 kg at 60 sec
230 lb104.3 kgBarbell Squat377 lb171 kg428 lb194.1 kg485 lb220 kg535 lb242.7 kg
Isometric Barbell Back Squat57.5 lb26.1 kg at 60 sec115 lb52.2 kg at 60 sec184 lb83.5 kg at 60 sec253 lb114.8 kg at 60 sec
240 lb108.9 kgBarbell Squat388 lb176 kg441 lb200 kg499 lb226.3 kg550 lb249.5 kg
Isometric Barbell Back Squat60 lb27.2 kg at 60 sec120 lb54.4 kg at 60 sec192 lb87.1 kg at 60 sec264 lb119.7 kg at 60 sec
250 lb113.4 kgBarbell Squat399 lb181 kg453 lb205.5 kg513 lb232.7 kg566 lb256.7 kg
Isometric Barbell Back Squat62.5 lb28.3 kg at 60 sec125 lb56.7 kg at 60 sec200 lb90.7 kg at 60 sec275 lb124.7 kg at 60 sec
260 lb117.9 kgBarbell Squat409 lb185.5 kg465 lb210.9 kg526 lb238.6 kg581 lb263.5 kg
Isometric Barbell Back Squat65 lb29.5 kg at 60 sec130 lb59 kg at 60 sec208 lb94.3 kg at 60 sec286 lb129.7 kg at 60 sec
270 lb122.5 kgBarbell Squat420 lb190.5 kg477 lb216.4 kg540 lb244.9 kg595 lb269.9 kg
Isometric Barbell Back Squat67.5 lb30.6 kg at 60 sec135 lb61.2 kg at 60 sec216 lb98 kg at 60 sec297 lb134.7 kg at 60 sec
280 lb127 kgBarbell Squat430 lb195 kg488 lb221.4 kg553 lb250.8 kg610 lb276.7 kg
Isometric Barbell Back Squat70 lb31.8 kg at 60 sec140 lb63.5 kg at 60 sec224 lb101.6 kg at 60 sec308 lb139.7 kg at 60 sec
290 lb131.5 kgBarbell Squat440 lb199.6 kg500 lb226.8 kg566 lb256.7 kg624 lb283 kg
Isometric Barbell Back Squat72.5 lb32.9 kg at 60 sec145 lb65.8 kg at 60 sec232 lb105.2 kg at 60 sec319 lb144.7 kg at 60 sec
300 lb136.1 kgBarbell Squat450 lb204.1 kg511 lb231.8 kg579 lb262.6 kg639 lb289.8 kg
Isometric Barbell Back Squat75 lb34 kg at 60 sec150 lb68 kg at 60 sec240 lb108.9 kg at 60 sec330 lb149.7 kg at 60 sec

Women’s Barbell Squat vs Isometric Barbell Back Squat 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 at the stated reference hold time.

Women’s Barbell Squat vs Isometric Barbell Back Squat standards
BodyweightExerciseNoviceIntermediateAdvancedElite
100 lb45.4 kgBarbell Squat143 lb64.9 kg166 lb75.3 kg197 lb89.4 kg220 lb99.8 kg
Isometric Barbell Back Squat18 lb8.2 kg at 60 sec36 lb16.3 kg at 60 sec58 lb26.3 kg at 60 sec80 lb36.3 kg at 60 sec
110 lb49.9 kgBarbell Squat153 lb69.4 kg177 lb80.3 kg210 lb95.3 kg234 lb106.1 kg
Isometric Barbell Back Squat19.8 lb9 kg at 60 sec39.6 lb18 kg at 60 sec63.8 lb28.9 kg at 60 sec88 lb39.9 kg at 60 sec
120 lb54.4 kgBarbell Squat162 lb73.5 kg188 lb85.3 kg222 lb100.7 kg248 lb112.5 kg
Isometric Barbell Back Squat21.6 lb9.8 kg at 60 sec43.2 lb19.6 kg at 60 sec69.6 lb31.6 kg at 60 sec96 lb43.5 kg at 60 sec
130 lb59 kgBarbell Squat171 lb77.6 kg198 lb89.8 kg235 lb106.6 kg262 lb118.8 kg
Isometric Barbell Back Squat23.4 lb10.6 kg at 60 sec46.8 lb21.2 kg at 60 sec75.4 lb34.2 kg at 60 sec104 lb47.2 kg at 60 sec
140 lb63.5 kgBarbell Squat180 lb81.6 kg208 lb94.3 kg246 lb111.6 kg275 lb124.7 kg
Isometric Barbell Back Squat25.2 lb11.4 kg at 60 sec50.4 lb22.9 kg at 60 sec81.2 lb36.8 kg at 60 sec112 lb50.8 kg at 60 sec
150 lb68 kgBarbell Squat188 lb85.3 kg218 lb98.9 kg258 lb117 kg288 lb130.6 kg
Isometric Barbell Back Squat27 lb12.2 kg at 60 sec54 lb24.5 kg at 60 sec87 lb39.5 kg at 60 sec120 lb54.4 kg at 60 sec
160 lb72.6 kgBarbell Squat196 lb88.9 kg228 lb103.4 kg269 lb122 kg301 lb136.5 kg
Isometric Barbell Back Squat28.8 lb13.1 kg at 60 sec57.6 lb26.1 kg at 60 sec92.8 lb42.1 kg at 60 sec128 lb58.1 kg at 60 sec
170 lb77.1 kgBarbell Squat204 lb92.5 kg237 lb107.5 kg280 lb127 kg313 lb142 kg
Isometric Barbell Back Squat30.6 lb13.9 kg at 60 sec61.2 lb27.8 kg at 60 sec98.6 lb44.7 kg at 60 sec136 lb61.7 kg at 60 sec
180 lb81.6 kgBarbell Squat212 lb96.2 kg246 lb111.6 kg291 lb132 kg325 lb147.4 kg
Isometric Barbell Back Squat32.4 lb14.7 kg at 60 sec64.8 lb29.4 kg at 60 sec104.4 lb47.4 kg at 60 sec144 lb65.3 kg at 60 sec
190 lb86.2 kgBarbell Squat220 lb99.8 kg255 lb115.7 kg302 lb137 kg337 lb152.9 kg
Isometric Barbell Back Squat34.2 lb15.5 kg at 60 sec68.4 lb31 kg at 60 sec110.2 lb50 kg at 60 sec152 lb68.9 kg at 60 sec
200 lb90.7 kgBarbell Squat228 lb103.4 kg264 lb119.7 kg313 lb142 kg349 lb158.3 kg
Isometric Barbell Back Squat36 lb16.3 kg at 60 sec72 lb32.7 kg at 60 sec116 lb52.6 kg at 60 sec160 lb72.6 kg at 60 sec
210 lb95.3 kgBarbell Squat235 lb106.6 kg273 lb123.8 kg323 lb146.5 kg360 lb163.3 kg
Isometric Barbell Back Squat37.8 lb17.1 kg at 60 sec75.6 lb34.3 kg at 60 sec121.8 lb55.2 kg at 60 sec168 lb76.2 kg at 60 sec
220 lb99.8 kgBarbell Squat243 lb110.2 kg281 lb127.5 kg333 lb151 kg372 lb168.7 kg
Isometric Barbell Back Squat39.6 lb18 kg at 60 sec79.2 lb35.9 kg at 60 sec127.6 lb57.9 kg at 60 sec176 lb79.8 kg at 60 sec
230 lb104.3 kgBarbell Squat250 lb113.4 kg290 lb131.5 kg343 lb155.6 kg383 lb173.7 kg
Isometric Barbell Back Squat41.4 lb18.8 kg at 60 sec82.8 lb37.6 kg at 60 sec133.4 lb60.5 kg at 60 sec184 lb83.5 kg at 60 sec
240 lb108.9 kgBarbell Squat257 lb116.6 kg298 lb135.2 kg353 lb160.1 kg394 lb178.7 kg
Isometric Barbell Back Squat43.2 lb19.6 kg at 60 sec86.4 lb39.2 kg at 60 sec139.2 lb63.1 kg at 60 sec192 lb87.1 kg at 60 sec

How Your Barbell Squat vs Isometric Barbell Back Squat Result Is Calculated

The two exercises can use different measurements. The calculator rates each result against the standards for that exercise first, then compares the resulting strength levels and progress toward the next level. It never invents a reps-to-weight conversion.

1. Estimate the weight-based result

For Barbell Squat, one rep uses the weight entered. For 2–12 reps, the calculator runs both estimates and keeps the lower result.

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

For a useful Barbell Squat vs Isometric Barbell Back Squat comparison, use clean, recent sets performed with consistent technique and range of motion. Lower-rep sets usually require less extrapolation.

2. Rate the Barbell Squat result

The standards use the sex-specific high-bar, full-depth back squat thresholds from the individual tool after its two-thirds scaling migration. The target adjusts to bodyweight using reference target × (user bodyweight ÷ reference bodyweight) to the two-thirds power.

3. Rate the Isometric Barbell Back Squat result

The exercise-specific model supplies sex-specific weighted-hold score thresholds; its compute implementation applies the approved age adjustment before assigning a tier. The calculator uses external added load divided by bodyweight and normalized to the exercise-specific 60-second hold with the defined load-duration curve and preserves both external load and hold time.

4. Compare strength level and progress

The lower strength level is the priority. When both exercises reach the same level, a priority appears only when one is at least 10 points farther from its next target. Otherwise, the result is Balanced. Age range is recorded anonymously and does not change either standard.

StageWhat happens
Rate the barbell squatUse total-barbell estimated max and adjust targets to exact bodyweight with the two-thirds rule. Measurement: estimated one-rep max.
Rate the isometric barbell back squat weighted holdPreserve both external load and hold time, then use the exercise-specific normalized weighted-hold score. Measurement: estimated one-rep max.
Compare levelsUse each exercise’s own level and next target; do not compare or divide results that use different measurements.

How Men’s Barbell Squat and Isometric Barbell Back Squat Standards Differ

What the men’s standards show:

Barbell Squat Elite targets347 lb → 639 lb

Elite weight targets from 120 to 300 lb bodyweight.

Isometric Barbell Back Squat Elite targets132 lb / 59.9 kg at 60 sec → 330 lb / 149.7 kg at 60 sec

Elite weight targets from 120 to 300 lb bodyweight.

Comparison boundaryStrength level first

Raw repetitions, seconds, and weights are not divided or converted. The calculator compares each exercise’s strength tier and progress within that tier.

The line chart below preserves each exercise’s real standards measurement in its own panel. Repetitions, seconds, and weights are never converted into one another.

Line chart loading. The standards tables above contain the exact values.

How Women’s Barbell Squat and Isometric Barbell Back Squat Standards Differ

What the women’s standards show:

Barbell Squat Elite targets220 lb → 394 lb

Elite weight targets from 100 to 240 lb bodyweight.

Isometric Barbell Back Squat Elite targets80 lb / 36.3 kg at 60 sec → 192 lb / 87.1 kg at 60 sec

Elite weight targets from 100 to 240 lb bodyweight.

Comparison boundaryStrength level first

Raw repetitions, seconds, and weights are not divided or converted. The calculator compares each exercise’s strength tier and progress within that tier.

The line chart below preserves each exercise’s real standards measurement in its own panel. Repetitions, seconds, and weights are never converted into one another.

Line chart loading. The standards tables above contain the exact values.

Barbell Squat and Isometric Barbell Back Squat Exercises Used by This Calculator

The calculator expects repeatable barbell back squat and isometric barbell back squat results. Follow each exercise definition below so the two ratings are based on valid tests. Use strict, repeatable Barbell Squat and Isometric Barbell Back Squat 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.

Use a raw high-bar squat below parallel

Enter the bar plus all plates. Keep the bar high on the traps, descend until the hip crease passes below the top of the knee, and stand to full hip and knee extension. Do not enter per-side plates, low-bar, box, pin, partial, Smith-machine, hack-squat, wrapped, suited, or assisted results.

Use the Isometric Barbell Back Squat setup and load convention

Score is external added load divided by bodyweight, adjusted to the 60-second reference hold using the defined load-duration curve. Bodyweight is not added into the scored load for this tool. The curve balances load and hold time so very light long holds and very heavy short holds are not automatically equal. Depth, foot pressure, torso position, knee position, and bar position remain controlled; the user does not rest on pins, straps, hands, rack, partner support, or a box. Use only the strict loaded hold described here; unloaded holds, assisted holds, substituted movements, or adjacent exercise variations are outside this standard.

Enter one recent Barbell Squat result and one recent Isometric Barbell Back Squat result

First exercise: Total barbell weight and a whole number from 1 to 12 reps. Second exercise: Barbell load and Hold time (seconds). Use the units shown.

Use Calculator