Free Tool
Enter your target weight - get exact plates for each side of the bar. No math required.
Take it to the gym
Save your bar preference, calculate instantly from your pocket, and automatically track your PRs as you load up.
Enter your target barbell weight, select your bar type, and the calculator instantly tells you which plates to load on each side. It uses a greedy algorithm - always choosing the largest plate first - to minimize the total number of plates used.
Olympic barbells use these standard plate sizes: 25 kg (red), 20 kg (blue), 15 kg (yellow), 10 kg (green), 5 kg (white), 2.5 kg (gray), and 1.25 kg. In pounds: 45, 35, 25, 10, 5, and 2.5 lb.
Mental math at the gym wastes time and risks loading errors - especially under fatigue or when dealing with odd weights like 142.5 kg. A plate calculator eliminates the guesswork so you can focus on lifting.