FitCalc

Squat 1RM Calculator

Estimate your squat 1RM from a set, with the percentage chart for programming.

Quick answer: Squatting 100 kg for 5 reps implies a 1RM of about 117 kg by the Epley formula. The squat is usually the lift with the biggest 1RM, and estimates track well from sets of 3–6 reps.

kg
reps

Stop 1–2 reps short of failure for a better estimate.

Estimated 1RM
93 kg
From
80 kg × 5 reps
% 1RMWeight≈ Reps
100%93 kg1
95%89 kg2
90%84 kg5
85%79 kg7
80%75 kg10
75%70 kg12
70%65 kg15
65%61 kg20
Epley93 kg
Brzycki90 kg
Lombardi94 kg
Oconner90 kg
Mayhew95 kg

1RM formulas estimate the most weight you could lift once from a set taken to near failure. Accuracy is best in the 3–6 rep range; at high reps the estimate becomes optimistic. Always use a spotter or safety pins when testing a true max.

Core facts
ExerciseBack squat
InputWeight + reps
Best range3 – 6 reps
NoteDepth and bar position change the number

What is Squat Calculator?

The squat is the classic lower-body strength lift and usually the heaviest of the three powerlifts. This calculator estimates your squat 1RM from a hard set. Two variables shift the number more than the formula does: depth (a below-parallel squat is heavier than a quarter squat) and bar position (low-bar and high-bar are different lifts). Standardise those and the estimate becomes a reliable training reference. Remember that a squat 1RM also depends on bracing technique and confidence under load, so early estimates for beginner lifters often run ahead of what they can actually stand up with until technique catches up.

Common Uses for Squat Calculator

  • Estimate squat 1RM from a working set
  • Program squat loads as percentages
  • Track lower-body strength progress
  • Set targets for a strength cycle

Frequently Asked Questions

How accurate is a squat 1RM estimate?
Within about 5% for hard sets of 3–6 reps. Depth and bar position are the main sources of error, so keep them constant when you test.
Should I squat below parallel?
For general strength and muscle, squatting to at least parallel is standard. Competition lifts require hip crease below the knee. Train in the range you can control with good technique.
What is a good squat?
Intermediate lifters often squat around 1.25–1.5 times body weight; advanced lifters exceed 2 times. Progress depends on training age, levers and programme.

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