Calculate your performance across multiple disciplines. Track your progress, share your achievements, and reach new fitness heights with our comprehensive suite of calculators.
Choose from our comprehensive collection of fitness calculators
Assess your lifting performance across 50+ exercises with age and weight standards.
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Predict your maximum single-rep performance using proven formulas.
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Find the optimal plate combination for any weight on your barbell.
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Calculate your powerlifting total and competition standards.
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Compare lifting performance across different body weights using Wilks formula.
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Evaluate your running performance across various distances and terrains.
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Calculate your swimming performance across different strokes and distances.
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Estimate recovery time for common fitness-related injuries.
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Whether you're just starting your strength training journey or you're a seasoned lifter, knowing your repetition maximum (rep max) is essential for reaching your strength goals. At WeightLiftCalculator.com, we help you accurately calculate your 1RM (one-repetition maximum) using the amount of weight lifted and the number of repetitions performed — giving you the insights you need to train smarter and build muscle mass effectively.
Use our Rep Max Calculator to estimate your maximum weight for a single repetition. Just enter your weight lifted, your number of repetitions, and the bar weight (if applicable), and get your estimated 1RM in seconds. This is the key to unlocking your full potential in compound lifts like the bench press, squat, and deadlift.
Your repetition maximum is more than just a number — it's a roadmap for targeted progression. By understanding your current strength level, you can:
WeightLiftCalculator.com is built with practical experience in mind. Whether you're lifting at home or in the gym, our tools are designed to support proper form, smart programming, and consistent gains.
Curious how you stack up? Explore our strength standards charts and see how your 1RM compares across different lifts and experience levels. Whether you're focused on hypertrophy or max strength, we'll help you stay on track.
Start calculating today and take control of your training. Your next PR (personal record) starts here.
👉 Try our FREE Rep Max Calculator now!
