1RM Calculator vs My 1 Rep Max

1RM Calculator is a tool to help you determine your 1-rep max! Because of the nature and stress of attempting a 1-rep max, this utility allows you to enter in a weight you successfully lifted at the number of reps you performed in order to see what your estimated 1-rep max is. This not only helps give you an idea of the weight to attempt when actually performing a 1-rep max but also to gauge your strength and compare different rep schemes performed at different reps. If one week you were able to bench press 190 lbs at 6 reps and the next week you did 200 for 5, this app gives you a way to compare the two as best as possible (190 lbs @ 6 reps gives a 1-rep max estimate of 223 lbs vs. 200 lbs @ 5 reps gives a 1-rep max estimate of 227 lbs) **** PRO VERSION FEATURES **** Upgrade to the Pro version to get all the settings and features! - Ad free experience - Save your lifts and track your history and progress - Historical chart and list views, categorized by exercise - More formulas in order to best estimate your maximums - Multiple rep maxes (up to 10) - Ability to switch between lbs and kgs - Percentage view that shows anywhere from 50% to 125% of your 1-rep max 1RM Calculator is only intended to give estimates based on the data you enter. Since these are calculated values they may vary with actual measured values. Always ensure you have a spotter, and work your way up to your limit with more than adequate warmup to prevent injuries.

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.