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Estimate Your One-Rep Max (1RM)
Formula
Your one-rep max (1RM) is the maximum weight you can lift for a single repetition with proper form. It is a key benchmark for measuring strength and programming training loads.
Rather than testing a true 1RM (which carries injury risk), you can estimate it from a submaximal set. The Epley and Brzycki formulas are most accurate for sets of 2-10 reps.
Common use cases:
- Programming strength training percentages
- Tracking strength progress over time
- Setting lifting goals
Frequently Asked Questions
Dr. David Park
Applied Mathematician, PhD Mathematics
David holds a PhD in Applied Mathematics from MIT. He has published research on numerical methods and computational algorithms used in engineering and scientific calculators.
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