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One Rep Max Calculator

Calculate your one rep max based on your current lifting performance.

? Always warm up properly and use a spotter when attempting heavy lifts.

Uses the Brzycki formula for accurate 1RM estimation.

Units:

reps
kg

Related Tips

- Your 1RM can fluctuate based on factors like fatigue, nutrition, and stress.
- Use your 1RM to set realistic training goals and track your progress.
- Don't train at your 1RM too frequently to avoid overtraining and injury.