One Rep Max

A calculator for estimating your 1RM in weightlifting sports
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One Rep Max is a simple tool for estimating lifting maxes. You can use the browser version, or you can add the app to your home screen on your phone (and even use it offline). Customize the results by changing the formula, rounding, increment, and unit.
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    One Rep Max is a simple tool for estimating lifting maxes. You can use the browser version, or you can add the app to your home screen on your phone (and even use it offline). Customize the results by changing the formula, rounding, increment, and unit.