Bench Press 1RM Calculator

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Estimates your One-Rep Max (1RM) for the bench press based on the weight lifted and the number of repetitions performed.

How To Use

How to use this calculator

Start with your values, or try a preset.

Step 1

Enter Weight Lifted and Repetitions in the units shown.

Step 2

Read Estimated 1 Rep Max (1RM) in the results panel. Results update as you change the inputs.

Step 3

Choose a preset to load an example, then adjust the values for your situation.

Worked Examples

See the inputs and their calculated results.

Weight Lifted: 135 lbs; Repetitions: 8

Estimated 1 Rep Max (1RM): 167.6185746 lbs

Weight Lifted: 185 lbs; Repetitions: 5

Estimated 1 Rep Max (1RM): 208.1458146 lbs

Weight Lifted: 225 lbs; Repetitions: 3

Estimated 1 Rep Max (1RM): 238.2465057 lbs

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