Barbell Plate Calculator

Plates are listed heaviest first, which is the order they go on the bar. The biggest plate slides on first and sits closest to the center, then each smaller plate follows, and the smallest plate ends up on the outside. The bar graphic shows the same layout, so you can glance at your phone and load exactly what you see.

Plates come in fixed sizes, so a bar can only be loaded to certain totals. With a standard plate set the smallest jump you can make is 2.5 kg or 5 lb, and some numbers in between simply have no combination. When your target lands on one of those numbers, the calculator shows the nearest loadable totals above and below it. Tap either chip to load that weight instead.

Yes. Everything that leaves the floor counts. A men's Olympic bar adds 20 kg or 45 lb before any plates go on, and a women's bar adds 15 kg or 35 lb. Competition collars add about 2.5 per side. Turn the collars toggle on when you use them so the math stays honest.

Pick the custom option and type in whatever your bar weighs. Fixed bars, safety squat bars, trap bars, and Smith machines all differ from the Olympic standard, and Smith machines in particular vary wildly between brands. Check the placard on the machine or ask the staff, then enter that number once.

Gyms stock either kilogram plates or pound plates, and the two systems build different bars. A two-plate bench is 225 lb on a pound bar and 100 kg, about 220 lb, on a kilo bar. The totals drift further apart as you add plates. Switch the unit toggle to match the plates in front of you rather than converting in your head.

Load the heaviest plates on the inside every time. The big plates carry the load best against the sleeve, and the small change plates stay secure on the outside. Mixing the order makes the bar awkward to strip and can let small plates slide under loose collars.