Barbell Check is a free tool for lifters who want to load a barbell fast and correctly. Type a target weight, pick your bar, and the calculator shows the exact plates to load on each side, in lb or kg. No account, no signup, no app to install. It runs in your browser and works on your phone between sets. It is built for lifters who train with a barbell every week, for coaches who write programs, and for home gym owners who load with the plates they actually own.
What the calculator does
The Barbell Calculator answers one question: which plates make this total? Pick lb or kg, type your target weight, and pick your bar. The tool shows the plates per side, the total, and the same load in the other unit. It also builds a percent table and warmup sets from your working weight, so 225 lb at 50 percent, 70 percent and 85 percent is already worked out. If you use collars, pick the kind you use and the tool counts them. Copy link saves your exact load, so you can open the same setup next session. A 20 kg bar is shown as 44.1 lb, not rounded to 45 lb, because the small gap matters when you mix lb and kg plates or compare logs across gyms. Note that a 20 kg bar and a 45 lb bar are not the same bar: 45 lb is 20.4 kg. Pick the bar you have, and the tool uses that bar’s weight. If your gym does not have a plate size, switch it off and the tool works with the plates you do have.
How the plates are worked out
The method is simple. Subtract the bar and the collars from the target, divide what is left by two, then build that number per side from the biggest plate down. For 225 lb on a 45 lb bar: 225 minus 45 is 180, 180 divided by two is 90, and 90 is two 45 lb plates per side. The same method works in kg. For 100 kg on a 20 kg bar: 100 minus 20 is 80, 80 divided by two is 40, and 40 is 25 plus 15 per side. With competition collars the tool takes 5 kg off first, so 100 kg needs 37.5 kg per side, for example 25 plus 10 plus 2.5. When an exact load is not possible, the tool shows the closest load it can make with the plates you have, plus the next load up. Your gym may not have small plates such as 1.25 lb plates, so the tool rounds to the closest load instead of pretending an exact load exists. Competition kg plates follow the IWF color code: 25 kg red, 20 kg blue, 15 kg yellow, 10 kg green, 5 kg white. Bumper sets copy the same code for the big lb plates: 55 lb red, 45 lb blue, 35 lb yellow and 25 lb green.
Why you can check every number
Every number on this site comes from a worked example you can check yourself. The most used example is 225 lb: a 45 lb bar plus two 45 lb plates per side. The formula is simple, total equals bar plus plates on one side times two. Plate weights vary by brand, and bars are not all stamped the same, so always check the stamp on your own bar and plates. If a number on this site disagrees with your equipment, trust your equipment.
Who this is for
This site is for anyone who loads a barbell and wants the plates right the first time. Beginners use it to learn plate math without guessing. Lifters who switch between lb and kg gyms use it to convert a familiar load. Coaches use it to write programs with exact loads. Home gym owners use it to plan sessions around the plates they own, switching off the sizes they do not have.
Who writes Barbell Check
Barbell Check is built and maintained by Nazakat, who built the calculator himself. He lifts weights, and the guides were reviewed by Coach Hammad. Every table on this site is calculated by the tool itself and checked against published IWF and IPF equipment standards. If a number looks wrong, tell us through the Contact page and it will be fixed.
What Barbell Check does not do
Barbell Check does not ask you to create an account, and it does not track you across other websites. There are no ads on the site right now. If ads are added later to keep the calculators free, the Privacy Policy will be updated first to say what they collect. It does not write training programs, give medical advice, or sell equipment. It does one job: work out the plates for a target weight, and show the working so you can check it.
What is coming next
More calculators are planned, one at a time, starting with the ones lifters ask for most. The calculator already has a reverse mode: tap the plates already on the bar and it adds them up. Next as its own page is a reverse calculator, so you can start from the plates alone and get the total. Each one will work the same way: free, no signup, in lb and kg, with the working shown so you can check it.
If you spot a wrong number on any page, use the Contact page to tell us, and it will be checked and fixed.