1RM

Health and Fitness

One Rep Max Calculator

Estimate one-rep max from lifting weight and repetitions.

Preparing One Rep Max Calculator

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Input

One-rep max estimate from a recent set. This tool shows the result instantly without step-by-step output.

Input summary

Your calculator summary shows here.

How to use One Rep Max Calculator

Enter the required values and tap Calculate to get the result instantly. This tool is built for quick direct output.

What this calculator is for

One-rep max estimate from a recent set.

Tips

Fill every required field before calculating.
For text lists, separate values with commas, spaces, or new lines.
The result box will show the final labeled answer immediately.

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