One Rep Max Bench Calculator
Estimate your one-repetition maximum (1RM) for bench press based on the weight you can lift for multiple reps. Uses the Epley formula for accurate estimation.
Published by:
isCalculator Editorial Team
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How to use this tool?
How to Use the One Rep Max Bench Calculator
- Enter the weight you lifted (in kilograms) in the "Weight Lifted" field. For example,
80. - Enter the number of reps you performed (between 1 and 30) in the "Number of Reps" field. For example,
5. - Click the "Calculate 1RM" button to get your estimated one-rep max.
- View your result displayed in kilograms. The calculator uses the Epley formula:
1RM = Weight × (1 + 0.0333 × Reps).
Note: This calculator uses metric units (kg). Ensure your weight is in kilograms. Reps must be between 1 and 30.
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Frequently Asked Questions
One rep max is the maximum weight you can lift for one repetition of an exercise.
The Epley formula is a well-established estimation method, but actual 1RM can vary due to factors like fatigue and technique.
Yes, the calculator can be used for any lift, but it is most commonly used for bench press, squat, and deadlift.
