One rep max calculator
Reps
Estimated one-rep max
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Enter a weight and the reps you did it for.
Formulas used
Epley, Brzycki, Lombardi, O'Conner, Wathan and Mayhew. The big number is their average. All six are listed under it.
Past twelve reps
No estimate. Past twelve the formulas measure endurance, not a maximum.
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