Free lifting calculators

The same math the Kilos app uses, in your browser. No account, nothing to install, and the numbers never leave your device.

• One rep max calculatorEstimate your 1RM from any set, with a percentage table for training weights.
• Plate calculatorWhich plates go on each side of the bar, in kg or lb.
• Workout volume calculatorWeight × reps × sets, with dumbbells and one-sided lifts counted right.

Want these numbers worked out for every set you lift? See how Kilos works.