Plate Calculator
Enter a target weight and bar. Get exactly which plates go on each side, and the closest loadable weight if your target doesn't divide evenly.
Per side
45 + 45
Achieved weight
225 lb
Exact match
Yes, exactly
How it's calculated
The calculator subtracts the bar weight from your target, splits what's left evenly between both sides, then loads the largest plate that still fits, repeating down to the smallest -- the standard way anyone loads a bar by hand. If that doesn't land exactly on target, it also checks whether one more of the smallest plate per side gets closer, and shows whichever total is nearer.
Worked example: 225 lb on a 45 lb bar
| Weight to load | 225 − 45 (bar) = 180 lb total, 90 lb per side |
| Per side | 45 + 45 = 90 lb |
| Achieved weight | 45 + (90 × 2) = 225 lb (exact) |
Enter 225 lb and a 45 lb bar above and the diagram matches this exactly.
Frequently Asked Questions
Why doesn't my target weight load exactly?
Plates only come in fixed sizes (45, 35, 25, 10, 5, 2.5 lb; 25, 20, 15, 10, 5, 2.5, 1.25 kg), so not every number is reachable. The calculator shows the closest weight you can actually load and how far off it is from your target.
Which weight should I use if my target isn't loadable?
Round to whichever side you're training for. Going into a top set, round down and treat the small gap as a bonus rep in reserve; on a planned overload day, round up. The calculator shows both directions implicitly -- the achieved weight is always the single closest option.
Why do you list a 33 lb bar as an option?
It's a common weight for reduced-load technique and training bars used in some gyms and youth/novice programs, alongside 25, 20, 15 and 10 lb versions. If you don't know your bar's exact weight, most commercial gyms use a standard 45 lb (men's) or 35 lb (women's) Olympic bar.
Does the order the plates are listed in matter for loading?
Yes -- load largest plates first, closest to the sleeve collar, then work outward to the smallest. That's the order the calculator lists them in, and it's also what the bar diagram shows.
Keep going
- Working off a percentage of your bench max? Estimate that max first, then load the working weight here. Bench Press Max Calculator
- Pull a target weight straight from the percentage chart, then load it here. One Rep Max Percentage Chart