Lift-specific tool
Squat 1RM calculator
Estimate a squat e1RM from recent work, with enough caveat to keep the number useful. Squat estimates move when depth, bracing, stance, or fatigue changes.
Best for
For lifters using squat percentages who want a repeatable estimate before setting training loads.
Estimate from a recent set
Lower-rep sets usually make better inputs.
Use the load you actually lifted with the technique you want to compare over time.
This public calculator accepts 1-12 reps and caps RPE-adjusted reps at 12.
Estimated result
Enter a recent set.
The output will show formula spread, RPE/RIR adjustment, and a conservative training max.
Squat context
Squat estimates depend on depth and fatigue
Use the same squat variation and depth standard each time. High-bar, low-bar, paused, tempo, and safety-bar squats should not be mixed as identical inputs.
Squat rep sets can be limited by bracing and systemic fatigue before the legs are the only bottleneck. That makes higher-rep inputs noisier.
Example: 140 kg x 5 at RPE 9 can be useful for planning, but it should usually become a lower training max before a long percentage block.
Use the next calculator
Formula and assumptions
- Uses the same Epley and Brzycki formulas as the main 1RM calculator.
- RPE adds estimated reps in reserve before calculating the e1RM.
- The output assumes the squat depth and variation are consistent.
Use it well
- Use a recent squat set with the same depth, stance, and bar position.
- Avoid mixing paused or tempo sets with regular squat estimates unless the program intends that.
- Set a conservative training max before building percentage work.
- Plan warm-ups around the target so the first work set is not a surprise.
Keep it honest
Caveats
- Depth changes can make squat estimates misleading.
- Fatigue, belt use, stance, and bar position can change rep performance.
- A calculated squat e1RM is not a substitute for safe max testing.
References
Sources
- Main 1RM formula references
The squat variant uses the same visible formula assumptions and caveats as the main 1RM calculator.
- 1RM prediction limitations
Review context on factors that affect 1RM prediction and testing.
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