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Embed the One Rep Max (1RM) Calculator

Three quick steps — customize the look, choose how it behaves, then copy the code onto your site.

Calculator

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#FF5C00

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#0A0C0B

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12px

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Weight Lifted

1 lb1,500 lb

Reps Performed

120

Calculation Method

Estimated 1 Rep Max

215.8

Your estimated max weight for a single repetition, using the selected calculation method.

90% of 1RM (Power)

194.3

90% of your 1RM, a common load for power-focused training (1-3 reps).

80% of 1RM (Strength)

172.7

80% of your 1RM, typical for strength-focused training (4-6 reps).

70% of 1RM (Hypertrophy)

151.1

70% of your 1RM, typical for hypertrophy/muscle-building training (8-12 reps).

60% of 1RM (Endurance)

129.5

60% of your 1RM, typical for muscular endurance training (12+ reps).

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