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Barbell Weight Calculator

Enter the bar weight and the plate weight per side to get the total loaded barbell weight.

How it is calculated

The tool uses total = bar + 2 × plates per side. The bar weight is the empty bar on its own, and plates per side is the combined weight of every plate on one sleeve, not the weight of a single plate. The tool assumes both sleeves carry the same load. It gives the total, the per-side figure and the bar weight, each with one decimal. The tool always labels results in kg, but it does no conversion: if you type pounds, the numbers are in pounds and the kg label is wrong. Clips or collars are not counted, and neither bar nor plates may be negative.

Worked example

An empty bar weighs 20 and you load a 20, a 15, a 5 and a 2.5 on each side. The plates on one side add up to 20 + 15 + 5 + 2.5 = 42.5. Two sides carry 2 × 42.5 = 85. Adding the bar: 20 + 85 = 105. The tool shows a total of 105.0 kg, with 42.5 kg per side and a 20.0 kg bar.

Try this example →

Common mistakes

  • Entering the weight of one plate rather than the combined weight on a side. With a 20 and a 5 on each side, enter 25, not 20.
  • Entering the weight of both sides in the per-side field. The tool doubles it, so the total would be twice what is on the bar.
  • Forgetting the bar, or assuming a bar weight. Different bars weigh different amounts, so enter the figure for the bar you use.
  • Typing pounds into the fields and reading the kg label as kilograms. The label never changes; keep everything in one unit.
  • Leaving out collars or other loaded parts that weigh something. They are not included, so add them to the per-side figure if you want them counted.

About this calculator

The total loaded weight of a barbell equals the bar weight plus the plate weight on each side, counted twice — since plates are loaded symmetrically on both sleeves. Standard Olympic bars weigh 20 kg for men's bars or 15 kg for women's bars in kg-based gyms, and 45 lb in US gyms.

Lifters need to account for the bar itself, not just the plates, when reading a loaded barbell — a mistake that's easy to make when doing quick mental math at the rack. This calculator is used by lifters checking their working weight, strength coaches programming loads, and gym-goers converting between plate math and total weight on the bar.

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Comments (1)

  • Editorial team

    You can run it backwards when you know the target: subtract the bar from the total weight and halve it. A 100 kg total on a 20 kg bar needs 40 kg on each sleeve, and it is worth checking that your plate set can really make 40, for instance 25 plus 10 plus 5. Put that sleeve figure into the plates field. Which bar weights do you load most, and do you ever lift with mismatched sleeves?

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