Free Fitness & Strength Calculators

Instant, accurate tools for lifters — built on established formulas, no sign-up required.

🏋️ 1RM Calculator Estimate your one-rep max from any weight and rep count. 🏋️ Bench Press 1RM Calculator Estimate your max bench press from weight and reps. 🏋️ Squat 1RM Calculator Estimate your max squat from weight and reps.