Barbell Plate Calculator
Stop doing plate math mid-set. Enter your target weight and bar weight and see exactly which plates to load per side — in kilograms or pounds.
How it works
Per side
plates per side = (target − bar) ÷ 2
Greedy loading
The calculator loads the heaviest plate that fits, then the next, and so on — the same way you load a bar in the gym.
Standard plates
kg: 25 / 20 / 15 / 10 / 5 / 2.5 / 1.25 · lb: 45 / 35 / 25 / 10 / 5 / 2.5. Default bar 20 kg (45 lb).
Frequently Asked Questions
How much does a barbell weigh?
A standard Olympic barbell is 20 kg (about 45 lb). Women's Olympic bars are 15 kg. Set the bar weight in the calculator to match yours.
What plates do I need for 100 kg?
On a 20 kg bar you need 40 kg per side: one 25 kg and one 15 kg plate on each end.
Why doesn't my target load evenly?
If the remaining per-side weight is smaller than your lightest plate, the calculator shows a remainder — round to the nearest loadable weight or add micro-plates.
Know your numbers before you load the bar.
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