One Rep Max Calculator
Free one-rep max calculator to estimate your maximum lifting strength using Brzycki, Epley, and other formulas.
kg
🔒 Fast, free math calculators that run in your browser. No uploads, 100% private.
Last updated: January 2026
Free one-rep max calculator to estimate your maximum lifting strength using Brzycki, Epley, and other formulas.
🔒 Fast, free math calculators that run in your browser. No uploads, 100% private.
Last updated: January 2026