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Health & Fitness

One Rep Max (1RM)

Estimate your one-rep max and training percentages.

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One Rep Max (1RM)

How to Use the One Rep Max (1RM)

Enter the weight lifted and the number of reps completed to estimate your 1 Rep Max.

The One Rep Max (1RM)

Your 1RM is the maximum amount of weight you can lift for a single repetition. Since testing true 1RMs is dangerous and highly taxing on the central nervous system, mathematical formulas (like Brzycki or Epley) safely estimate it based on submaximal sets.

Frequently Asked Questions (FAQ)

Why do I need to know my 1RM?
Most strength training programs prescribe loads as a percentage of your 1RM.

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