Free Online One Rep Max Calculator
Estimate your One Rep Max with this free health & fitness tool.
Enter values and select Calculate to see your result.
Estimate only — this is not medical advice. Consult a qualified professional.
About this calculator
The One Rep Max Calculator is a free online health & fitness tool on Calcuto. Enter Weight, Reps and Method, and it instantly works out your One Rep Max result and shows it below the form. You can change any value and recalculate right away to compare different scenarios. Results are an estimate for general information only — see the note below the calculator, not professional advice.
How to use it
To use the One Rep Max Calculator, enter Weight, Reps and Method in the form above and select Calculate. Calcuto runs the One Rep Max calculation from your inputs and shows the result below the form. The output is an estimate, not professional advice.
Frequently asked questions
Is the One Rep Max Calculator free to use?
Yes. The One Rep Max Calculator is completely free, with no sign-up or download required.
What information do I need for the One Rep Max Calculator?
Provide Weight, Reps and Method, then select Calculate to see your result.
Is my data saved when I use the One Rep Max Calculator?
No personal data is saved. Your inputs are used only to work out the result and are not stored; only your currency and theme preferences are kept in your own browser.
Does the One Rep Max Calculator work on mobile?
Yes. It works in any modern web browser on desktop, tablet, and mobile.
Is the One Rep Max Calculator result professional advice?
Estimate only — this is not medical advice. Consult a qualified professional.