1RM Calculator
One Rep Maximum Calculator
Calculate your one rep maximum and get personalized training percentages based on your current performance. Perfect for strength training programming and progress tracking.
Related Calculators
Frequently Asked Questions
Which formula should I use?
Brzycki is most accurate for 1-5 reps, Epley for general use, and Lander for higher rep ranges. Choose based on your typical training rep ranges.
How often should I test my 1RM?
Test every 4-6 weeks for beginners, 6-8 weeks for intermediates, and 8-12 weeks for advanced lifters. Focus on technique and progressive overload between tests.
Can I use this for all exercises?
These formulas work best for compound movements like squats, deadlifts, and bench press. Isolation exercises may have different strength curves.