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One Rep Max Calculator

Estimate 1RM from a submaximal set.

One Rep Max Calculator

Informational only — not medical advice. Results are estimates. Consult a qualified clinician for health decisions.

Formula

Epley: w × (1 + r/30)

How it works

Estimates only — lift safely.

How to use

Enter weight lifted and reps (≤12).

Frequently Asked Questions

What is One Rep Max Calculator?+

Epley estimated 1RM.

How do I use One Rep Max Calculator on Pedzah?+

Enter weight lifted and reps (≤12).

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