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One Rep Max Calculator

Estimate one rep max strength from lifted weight and reps using a standard formula.

Use the One Rep Max Calculator

This calculator is part of FitNFO, a WordPress fitness calculator plugin with 130 calculators across Free, Pro and Enterprise versions.

One Rep Max Calculator

Enter your values and calculate instantly.

Weight (kg)

Height (cm)

Age

Gender

Activity

What this calculator helps with

The One Rep Max Calculator gives a quick educational estimate that can help visitors understand fitness numbers, plan goals and compare results over time. It is suitable for trainers, gyms, fitness bloggers, coaches and WordPress health websites.

How to use it

Enter the required values in the calculator form.
Click calculate to view the estimate.
Use the result as a general fitness guide, not medical advice.

Important disclaimer

FitNFO calculators provide educational fitness estimates only. They are not medical advice, diagnosis or treatment. Users should consult a qualified professional for medical or health decisions.

More FitNFO Tools

Demo Hub | Free Demo | Pro Demo | Enterprise Demo | Pricing

Important: FitNFO calculators, reports, workout ideas, nutrition suggestions, and AI-assisted analysis are informational tools only. They are not medical advice. Always consult a qualified healthcare professional, registered dietitian, or certified trainer before making health, diet, exercise, or medical decisions.