What makes Brzycki formula different from Epley?

Brzycki uses a hyperbolic formula instead of linear scaling. It tends to give slightly lower 1RM estimates than Epley for the same weight and reps, which may be more conservative and safer.

Is Brzycki good for powerlifting?

Brzycki is widely used in powerlifting programming. Many coaches use it to calculate training percentages from recent submaximal sets rather than requiring true maximal testing.

What reps range is Brzycki most accurate for?

Brzycki is most accurate for 2-10 reps. The formula becomes unreliable above 12 reps. For sets of 12 or more, use the Mayhew formula or average multiple estimators.

1-Rep Max Brzycki Formula Calculator

Estimate 1 rep max using the Brzycki formula: 1RM = weight x (36 / (37 - reps)). Accurate for 1-10 rep sets.

Use the full interactive calculator below, or

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Frequently Asked Questions

What makes Brzycki formula different from Epley?

Is Brzycki good for powerlifting?

What reps range is Brzycki most accurate for?