Calculateur de 1RM

Use the free online Calculateur de 1RM tool. Fast, private and easy to use — runs entirely in your browser. Part of our Calculateurs Sportifs collection.

Calculateur de 1RM

Estimate your one-rep max with the Epley formula plus common training percentages.

Calculateur de Calories de Course

Estimate calories burned running or walking a distance based on your body weight.

Prédicteur de Temps de Course

Predict your finish time at a new distance from a recent result using the Riegel formula.

Calculateur de VO2 Max (Test de Cooper)

Estimate aerobic fitness from a 12-minute run using the classic Cooper test formula.

Calculateur du Rapport Poids-Puissance

Compute watts per kilogram, the key performance metric in cycling and climbing.

Calculateur de Puissance de Saut Vertical

Convert a vertical jump into peak leg power with the Sayers equation.

Calculateur d'Indice de Singe

Find your ape index — wingspan minus height — the climber's favourite measurement.

Calculateur de Strike Rate au Cricket

Work out a cricket batting strike rate — runs per 100 balls faced.

Questions Fréquentes

Is the Calculateur de 1RM free to use?
Yes. The Calculateur de 1RM is completely free with no sign-up, no limits and no watermarks. You can use it as many times as you like.
Is the Calculateur de 1RM safe and private?
Absolutely. The Calculateur de 1RM runs entirely in your browser, so your data never leaves your device and nothing is uploaded to a server.
Do I need to install anything to use the Calculateur de 1RM?
No installation is needed. The Calculateur de 1RM works instantly online in any modern browser on desktop, tablet or mobile.
Does the Calculateur de 1RM work on mobile phones?
Yes. The Calculateur de 1RM is fully responsive and works smoothly on iPhone, Android and any other device.