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One rep max calculator: estimate your 1RM and compare with strength standards.
1RM Calculator Strength Rank is a simple one rep max calculator for lifters. Enter the weight and reps from a set to estimate your one rep max (1RM) without testing a maximal lift. Use it as a quick 1 rep max calculator during or after a workout, with kilograms or pounds. Compare with strength standards Compare your estimated 1RM with bodyweight-based strength standards. See your strength class, score, tier and division, and how close you are to the next strength rank. Track your lift history Save your lifts on your device and review your lift history. Compare previous estimates over time to follow changes in your strength. Features • One rep max calculator from weight and reps • Kilograms or pounds • Strength standards based on bodyweight • Strength class, score, tier, division and progress • Saved lifts and lift history Built for lifters who want a simple strength calculator instead of a full gym tracker.