One Rep Max Calculator

🏋️ One Rep Max (1RM) Calculator

Your name

Exercise

Weight lifted (lbs)

Reps performed

Formula

        🏆 One Rep Max
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📊 Formula Used —

💪 Training Max (90%) —

🎯 Strength Level —

📈 Estimated Max —

🏅 Reps at 1RM —

📊 1RM Analysis max strength

95%

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90%

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85%

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80%

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75%

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70%

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💪 Strength Focus 85-95% · 1-5 reps

💥 Hypertrophy 65-80% · 8-12 reps

🏃 Endurance 50-65% · 15+ reps

💡 Focus on progressive overload with proper form to safely increase your one rep max.

1RM estimates are calculated using validated formulas. Always use a spotter when testing your true one rep max.