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Estimated one-rep max
Estimated one-rep max
Estimated 1RM using Epley's formula, not a guaranteed safe lift.
Calculated result
96 kg
Results are estimates or simple arithmetic, not medical or investment advice.
Estimated 1RM using Epley's formula, not a guaranteed safe lift.
Calculated result
96 kg
Results are estimates or simple arithmetic, not medical or investment advice.
Estimate a one-repetition maximum from a completed set. The result is not a verified or guaranteed safe lift.
Uses the Epley equation. A single repetition returns the entered weight. Estimates become more uncertain as repetitions increase.
Estimated 1RM = weight × (1 + reps ÷ 30); for one rep, use the actual weight.
Do not rely on an estimate alone for a risky max attempt.
Use a properly performed completed set.
Calculate, then track
Log sets, repetitions and progress in Heltrum.
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Tools are for information and personal planning, not medical diagnosis, treatment or investment advice. Calculator inputs are processed in your browser.