Subtract the bar (and collars, if you use them) from the total weight and divide by two. For 100 kg with a 20 kg bar: (100 - 20) / 2 = 40 kg per side, which can be one 25 and one 15.
Carregando ferramenta… / Loading tool…
Find which plates to load on each side of the bar to hit the right weight, using your real plate stock, with a bar drawing, warm-up and kg/lb conversion.
To reach a weight, subtract the bar (and collars, if you use them) and divide by two: 100 kg on a 20 kg Olympic bar leaves 80 kg of plates, or 40 kg per side, which is 25 + 15. The tool does this with an exact dynamic-programming algorithm that finds the fewest plates while respecting how many of each size you own, not the greedy method that fails when a plate is missing. When the weight is impossible it shows the closest one below and above. Competition standards used as a base: a 20 kg men's bar and a 15 kg women's bar (IWF), collars of 2.5 kg each and bar plus collars totalling 25 kg (IPF rules), and mandatory colors of 15 kg yellow, 20 kg blue and 25 kg red in the IPF, with 10 kg green and 5 kg white in the IWF standard; discs of 10 kg or less may be any color in the IPF. Technique and EZ bars vary by maker, so the weight is editable. The bar drawing is schematic (proportional heights, not official dimensions) and each plate carries its printed number, so it never relies on color alone. There is also a reverse mode (add up what is on the bar), a warm-up ramp with few plate changes, and kg/lb conversion (1 lb = 0.45359237 kg) rounded to what you can actually load.
Paste the code into your HTML and the tool shows up on your page, without J-Kit's navigation and ads. It still runs in the browser of whoever visits your site.
<iframe
src="https://jkit.tools/embed/en-US/plate-calculator"
width="100%"
height="600"
style="border:0"
loading="lazy"
title="Barbell Plate Calculator"
></iframe>These references help contextualize formulas, standards, APIs and limitations used on this page. They do not replace professional validation when a result has legal, financial, medical or operational impact.
Subtract the bar (and collars, if you use them) from the total weight and divide by two. For 100 kg with a 20 kg bar: (100 - 20) / 2 = 40 kg per side, which can be one 25 and one 15.
Exact calculation: the fewest plates that reach the weight with your stock, preferring the heaviest next to the center. It is not the greedy method, so it still works when a plate is missing.
Always check the real bar and plates: gym bars and plates can vary and may not be calibrated. Secure plates with collars and use safety support on heavy lifts.
How many plates of each size you have for each side of the bar. With the current stock you can load up to 416.5 kg of plates in total.
Your stock defines what is possible: with few plates of one size, the result uses other combinations. The stock is included in the shareable link.