About the Barbell Plate Calculator

BarbellMax is a free barbell plate calculator. Enter your target weight and it shows the exact plates to load on each side of the bar, using only the plates you own. Set your bar weight, mark which plates are on your rack, and the math is done before you finish chalking up. It works in pounds or kilograms and finds the closest loadable weight when your target cannot be hit exactly.

Warm-up Sets mode builds a full warm-up progression from the empty bar to your working weight. Each set shows which plates to add and which to strip from the previous set, so you spend your rest resting instead of doing arithmetic. Quick Load ties into your one rep max: enter a training percentage and load any lift with one tap. A built-in rest timer counts down between sets and sounds when it is time to work.

Everything runs in your browser and saves on your device. No ads, no account required, no tracking. Sign in only if you want your data synced across devices. The same app is available for Android.

Learn more: How to Load a Barbell and Warm Up · How to Calculate Your One Rep Max