One Rep Max Calculator
Calculate your one rep max safely using proven formulas. Get accurate strength estimates and personalized training zones.
Important: Always warm up properly and use a spotter for heavy lifts. These are estimates - listen to your body and progress gradually.
Calculate Your 1RM
Enter your recent lift details
Multiple Formulas
7 proven formulas for accurate strength estimation
Training Zones
Personalized percentages for optimal programming
Safety First
Calculate strength without risky max testing
Frequently Asked Questions