Weight Loss & Nutrition
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🏋️♂️ One Rep Max Calculator
Calculate maximum weight you can lift for one repetition
About One Rep Max
One Rep Max (1RM) is the maximum weight you can lift for a single repetition. It's used to determine training loads and track strength progress.
How to Use
Enter a weight you can lift for multiple reps (ideally 3-8 reps) and the calculator will estimate your 1RM using the Epley formula.
Frequently Asked Questions
How accurate is this calculator?
Most accurate with 3-8 reps. Less accurate with very high or low rep ranges.
Should I test my actual 1RM?
Testing true 1RM carries injury risk. Using a calculator with submaximal weights is safer.
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