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How to Use the Plate Calculator
For squat, bench press, deadlift and other barbell lifts, knowing your target weight is only half the job — figuring out which plates to actually load on the bar takes extra thought. This tool converts a target worked out with the 1RM Calculator or RPE Calculator into an actual plate count.
How to use this tool
Enter your total target weight (including the bar) and the bar you're using. The tool subtracts the bar weight and divides the remainder by two, automatically working out the plate combination for one side, prioritising the heaviest plates first.
Loading tips
Load the heaviest plates closest to the sleeve collar and lighter plates toward the outside (the result is listed from centre outward). Always secure plates with collars/clips after loading, and double-check both sides are symmetrical before lifting.
When there's a remainder
Since the smallest standard plate is 1.25kg, some target weights leave a remainder. Use the "achievable total weight" shown as your practical target, and add finer plates (e.g. 0.5kg) if you have them available.
Get the bar weight right
The most frequent error in plate maths is assuming the wrong bar weight. A standard Olympic barbell is 20 kg and a women's Olympic bar is 15 kg, but many gyms mix in 10 or 15 kg training bars, some with no marking at all. EZ bars run 7–10 kg, and a Smith machine bar's effective weight depends entirely on its counterbalance — often somewhere between 7 and 15 kg rather than what is printed. Note the bar you used alongside the load in your log, or the numbers stop being comparable later.
Symmetrical, heaviest plates innermost
Always load the same plates in the same order on both sides, heaviest closest to the sleeve collar. Keeping mass near the centre reduces bar whip and makes heavy lifts more stable. Larger diameter plates on the inside also make the bar easier to unrack and set down.
Why small plates matter
Most gyms keep 1.25 kg and 0.5 kg fractional plates somewhere. The longer you train, the harder a 2.5 kg jump becomes, and forced big jumps are a common cause of stalling. Progressing in 1 kg steps using 0.5 kg a side keeps progressive overload going far longer. For target loads, see the 1RM calculator and RPE converter.
Glossary & FAQ
What plate sizes should I have?+
IPF/IWF competition rules assign a standard colour to each weight (25kg red, 20kg blue, 15kg yellow, 10kg green, etc). This tool calculates plate breakdowns based on that standard set.
How do I choose the bar weight?+
Women's or shorter bars are typically 15kg, and lightweight training bars are often around 10kg. Actual bar weight varies by gym, so check with staff if you are unsure.
What if my target weight can't be loaded exactly?+
This tool calculates the closest achievable weight and flags any remainder. If you have finer plates (e.g. 0.5kg), add them to close the gap.
Why does the result show plates per side?+
Does this work for Smith machines or multi-power racks?+
・ Based on the standard plate weight specifications (25/20/15/10/5/2.5/1.25kg) defined in the competition rules of the International Powerlifting Federation (IPF) and International Weightlifting Federation (IWF).
Actual plate sets and bar weights available at a gym vary by facility. Use this tool's results as a general guide based on standard specifications.
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