Max Rep Calculator

Estimate the maximum number of repetitions you can perform at a given weight based on your one-rep max, bodyweight assistance or loading, and exercise difficulty.

Rep Max Calculator

Estimate your one-repetition maximum (1RM) based on the weight lifted, number of reps completed, exercise type, and training experience using a weighted version of common rep max formulas.

1RM Calculator

Estimate your one-repetition maximum (1RM) from the weight lifted, repetitions completed, exercise type, and training experience using a practical strength formula with small adjustments for exercise complexity and lifter experience.