One Rep Max Calculator
Estimate your one rep max (1RM) based on the weight you can lift for multiple repetitions.
Training Zones
- 90-100%: Strength (1-4 reps)
- 75-85%: Power (5-8 reps)
- 65-75%: Hypertrophy (8-12 reps)
One Rep Max Calculator
Estimate your 1RM for any lift
Your Lift
kg
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