Barbell Plate Calculator
Loading a barbell should not require mental math between sets. Enter your target weight and this calculator shows exactly which plates to put on each side of the bar. It is built for lifters who warm up in jumps and need the next load fast.
Plate & warm-up calculator
Load the bar per side and ramp up to your working weight.
Enter a working weight to see the plate breakdown.
How it's calculated
The math is simple but easy to fumble mid-workout: plates per side = (target weight − bar weight) ÷ 2. The calculator subtracts the bar, halves the remainder, then fills that per-side load greedily from the heaviest plate down — the same way experienced lifters load a bar. A 140 kg squat with a 20 kg bar needs 60 kg per side: one 25, one 20, one 15. The greedy algorithm always produces the minimal plate count for a standard plate set.
Standard plate denominations are used: 25, 20, 15, 10, 5, 2.5, and 1.25 kg in metric, or 45, 35, 25, 10, 5, and 2.5 lb pounds. When a target cannot be hit exactly with available denominations, the calculator loads the closest achievable weight below your target — the practical choice, since going over your planned load defeats the purpose of programmed percentages.
This matters most when you train with percentage-based programming: a program calling for 72.5% of a 150 kg max means loading 108.75 kg, and knowing instantly that this rounds to 108.75 → 107.5 kg (one 25, one 15, one 2.5, one 1.25 per side) keeps rest periods honest. Combine it with the one rep max calculator: estimate your max, compute your working percentage, then let the plate calculator translate that number into actual iron on the bar.
Frequently asked questions
Does the calculator include the bar weight?
Yes. The bar weight is subtracted from your target first, and only the remainder is split into plates per side. A standard Olympic bar is 20 kg (45 lb).
What if my gym is missing some plate sizes?
The calculator assumes a standard commercial plate set. If your gym lacks a denomination, substitute two plates of half the size per side — the per-side total is what matters.
How do I load a weight that isn't achievable exactly?
Round down. Loading slightly under your target keeps percentage-based programming honest, while going over turns a planned submaximal set into an unplanned heavier one.
Does it work in pounds?
Yes — switch the unit system and the calculator uses lb bars and standard pound plate denominations (45, 35, 25, 10, 5, 2.5).
Take it with you
Every calculator, plus workout and macro tracking, in the ElevenSix Fitness app for iPhone.