1RM CALCULATOR – YOUR STRENGTH TRAINING COMPANION

Calculate your one-rep max instantly using the proven Epley formula. Get training percentages, and program workouts with confidence.

FREE WEIGHTS CALCULATOR
Enter your weight and reps for any barbell or dumbbell exercise. Get your estimated 1RM in seconds.

BODYWEIGHT EXERCISES
Calculate max capacity for pull-ups, dips, and other bodyweight movements—with or without added weight.

PUSH-UP VARIATIONS
Specialized calculations for elevated, standard, strict, and decline push-ups.

INSTANT TRAINING PERCENTAGES
Perfect for planning progressive overload.

KG & LBS SUPPORT
Switch between kilograms and pounds instantly. Great for international lifters or anyone who trains at different gyms.

EPLEY FORMULA
Uses the scientifically-backed formula: 1RM = weight × (1 + reps ÷ 30). Most accurate with 1-10 reps.

CLEAN INTERFACE
Simple, intuitive design.

WORKS OFFLINE
No internet required. Calculate anywhere, anytime.

NO ADS, NO SUBSCRIPTIONS
Pay once, own forever. No hidden costs.

IDEAL FOR:
• Powerlifters planning training cycles
• CrossFit athletes tracking benchmark lifts
• Personal trainers working with clients
• Gym-goers following strength programs
• Anyone wanting to estimate max lifts safely

WHY ESTIMATE YOUR 1RM?

Testing your true one-rep max is taxing on your body and carries injury risk. By using submaximal weights (weights you can lift for 2-10 reps), you can accurately estimate your max without the strain. It's safer, smarter, and just as effective for programming your training.

Download 1RM Calculator and take your strength training to the next level.