My 1 Rep Max

Know your strength. Track your progress. Get stronger. My 1 Rep Max is a powerful yet easy-to-use one-rep max (1RM) calculator and strength tracker designed to help you train smarter, measure your progress, and reach new personal records. Whether you're working toward a bigger bench press, a stronger squat, or a new deadlift PR, My 1 Rep Max gives you the tools to understand your strength and keep improving. CALCULATE YOUR STRENGTH • Calculate your 1RM using seven established strength formulas • Explore training weights based on percentages of your estimated max • See your estimated rep maxes for 1–10 repetitions • Work in pounds or kilograms TRACK YOUR PROGRESS Every lift tells part of your story. Save your workouts and build a lasting record of your strength. • Log your lifts and review your training history • Identify personal records and all-time highs • Pin your favorite lifts for quick access • Share your strength achievements TAKE YOUR TRAINING FURTHER WITH PREMIUM Unlock powerful tools to get more from every workout. • Progress Charts — Visualize your strength gains over time with interactive charts • Plate Calculator — Quickly figure out which plates to load on your barbell so you can focus on lifting • RPE Tracking — Record how hard your sets feel and incorporate effort into your strength estimates • Custom Exercises — Track the lifts that matter most to you • Extended Calculations — Estimate your 1RM from sets of more than 10 repetitions ONE-TIME PURCHASE. NO SUBSCRIPTION. Unlock all Premium features with a single purchase. No recurring fees. Whether you're checking your numbers between sets or tracking months of progress, My 1 Rep Max makes it easy to see how far you've come—and how much stronger you can become. A NOTE ABOUT SAFETY One-rep max calculations are estimates. Accuracy can vary based on training experience, technique, fatigue, and individual physiology. Attempting a true one-rep maximum involves risk. Always use appropriate safety equipment, have a qualified spotter when necessary, and never attempt a weight you aren't prepared to lift safely.