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One Rep Max Calculator
Calculate one rep max with our free online tool. Get instant results with helpful explanations and tips for better understanding.
Inputs
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Results
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What is a One Rep Max Calculator?
A One Rep Max Calculator estimates the maximum weight you can lift for one repetition based on submaximal lifts using proven formulas.
How to use
Enter the weight lifted and number of repetitions performed. The calculator estimates your one-rep max using multiple formulas.