One Rep Max Calculator

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One Rep Max Weight Lifting Formula

Weight Lifted / (1.0278 – (.0278 * Reps))

One Rep Max Weight Lifting Definition

Our One Rep Max Weight Lifting Calculator lets you instantly calculate your one rep max for the bench press, squat, curl, or any weight lifting exercise simply by entering in the amount of the weight and the number of repetitions that you have lifted it for.

The One Rep Max Calculator is very useful for estimating what your max squat, max bench press, max curl, etc. is without having to overly fatigue the muscles by actually attempting your one rep maximum with very heavy weight. Always use a spotter when attempting your One Rep Max!