Use this barbell plate calculator to find the plates you need on each side for a target weight. If the bar is already loaded, select the plates on one side to calculate the total, including the bar and any collars you enter. Both modes work in pounds (lb) and kilograms (kg).
- 1 × 45 lb
- 1 × 25 lb
70 lb per side · 45 lb bar
How to use the barbell plate calculator
Choose pounds or kilograms and enter your bar weight. In Target weight → plates, enter the total you want to lift. Adjust the available plate pairs and collar weight to match your setup. With a limited inventory, the calculator shows the closest achievable load at or below your target.
For example, a 185 lb target with a 45 lb bar and no collars leaves 140 lb for plates. Load one 45 lb plate and one 25 lb plate on each side.
To check a bar you have already loaded, choose Plates → total weight and select the plates on one side of the bar. The total includes the bar, both sides, and any collars you enter.