How does Brzycki differ from Epley?

The Brzycki formula uses a linear model that tends to be slightly more conservative for lower rep ranges, often giving results within 2-3% of the Epley estimate for sets of 2-10 reps.

What rep range is most accurate?

Brzycki is most reliable for 2 to 10 repetitions. Beyond 10 reps the formula becomes less accurate because fatigue begins to mask true strength.

Can I use this for any exercise?

Yes, though it was developed and validated primarily for the barbell back squat and bench press. Estimates for other exercises may vary in accuracy.

1-Rep Max Brzycki Formula

Estimate your one-rep maximum using the Brzycki formula: 1RM = weight / (1.0278 − 0.0278 × reps). Considered highly accurate for sets of 2 to 10 repetitions.

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1-Rep Max Brzycki Formula

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Frequently Asked Questions

How does Brzycki differ from Epley?

What rep range is most accurate?

Can I use this for any exercise?