Free strength calculator to estimate 1rm. Instant results in your browser — no signup.
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Enter values and calculate an instant answer.
Enter the values, then calculate.
Results update when you click Calculate.
Primary answer and useful breakdowns.
Estimated 1RM
93.3
(weight) * (1 + (reps)/30)
Free strength calculator to estimate 1rm. Instant results in your browser — no signup. Estimate 1RM: (weight) * (1 + (reps)/30).
Estimate 1RM: (weight) * (1 + (reps)/30).
Example: “one rep max calculator”. Enter your values and click the button to get a result.
It helps you estimate 1rm. Typical search: “one rep max calculator”.
Estimate 1RM using weight; reps; formula. Result: estimated 1RM.