1RM Calculator
Estimate your theoretical max and structure your strength cycles. Brzycki, Epley, Lombardi — with context-aware interpretation based on your body weight.
📊 Strength standards by exercise
Each exercise has its own page: men/women strength standards by bodyweight in kg, a percentage table and a movement-specific FAQ.
📐 How it is calculated
🧪 Cited studies
1RM prediction equations have been validated since the 1980s. The reference works:
- Brzycki, M. (1993) — Strength testing: predicting a one-rep max from reps-to-fatigue, JOPERD: introduces the most widely used formula for 1–10 reps.
- Epley, B. (1985) — Boyd Epley Workout: a linear formula that became standard in strength and conditioning.
- LeSuer, D. A. et al. (1997) — J Strength Cond Res: compares the equations on the bench, squat and deadlift; concludes that Epley and Brzycki are the most accurate.
- Reynolds, J. M. et al. (2006) — J Strength Cond Res: accuracy degrades markedly beyond 10 reps.
📋 Worked example
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Moyenne : 5.0/5 · 2 votes
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