Free Strength Training Calculators

Tools to lift smarter and hit bigger numbers — free, instant, no account needed.

1RM Calculator

Estimate your one rep max using 6 proven formulas. Enter the weight and reps from a recent set to get your predicted max.

See exactly which plates to load on each side of the barbell. Visual display with standard color coding for kg and lbs.

Planning a max attempt on squat, bench, or deadlift? Get the exact warm-up sets, reps, and rest periods to peak without burning out.

Estimate how many calories you burn during a strength training session — personalized to your age, weight, and body.

More calculators coming soon — Wilks, DOTS, RPE, and more.

Exercise-specific calculators with tailored guidance for each lift

Calculate your bench press max with exercise-specific guidance and strength standards.

Calculate your squat max with depth and technique considerations.

Calculate your deadlift max with pulling style and grip strength factors.

Calculate your overhead press max with shoulder stability considerations.