Calculate your one-rep max (1RM) for any exercise using multiple proven formulas.
Your 1RM is the maximum weight you can lift for a single repetition with proper form. Knowing your 1RM helps program training percentages for strength, hypertrophy, and endurance goals.
Most accurate with 3-10 reps (within 5% of actual). Less accurate with very high reps (15+). The Brzycki and Epley formulas are the most widely validated.