Barbell Plate Calculator
Enter a target weight and see exactly which plates go on each side — drawn on the bar, in IPF colors for kg plates. Free, lb and kg, no login.
Enter a target weight to see the plates — try 315.
Common barbell loads (45 lb bar)
The loads every lb gym works in, and what goes on each side.
| Total | Plates per side |
|---|---|
| 95 lb | 25 |
| 135 lb | 45 |
| 185 lb | 45 + 25 |
| 225 lb | 2 × 45 |
| 275 lb | 2 × 45 + 25 |
| 315 lb | 3 × 45 |
| 365 lb | 3 × 45 + 25 |
| 405 lb | 4 × 45 |
| 455 lb | 4 × 45 + 25 |
| 495 lb | 5 × 45 |
Questions
How many plates is 315?+
Three 45 lb plates per side on a 45 lb bar. The pattern: every pair of 45s adds 90 lb, so 135 is one plate per side, 225 is two, 315 is three, 405 is four.
What if the weight doesn't load evenly?+
The calculator snaps to the closest weight you can physically build and tells you how far off it is. That's how the math should work — you can't load 312 lb with standard plates, so pretending otherwise just hides the problem.
Can it do kg plates on a lb bar (or the reverse)?+
The full app can — mixed setups are exactly what it was built for (a 45 lb bar loaded with calibrated kg plates, totals shown in both units). This free version covers the two standard setups; a free account unlocks your own plate inventory, women's and specialty bars, and competition collars.
What do the plate colors mean?+
That's the IPF kilogram color code: red 25 kg, blue 20, yellow 15, green 10, white 5, black 2.5, chrome below that. Pound plates don't have an official code, so they draw in gray with their number.
Does it count the bar?+
Yes — the total always includes the bar (45 lb or 20 kg here; any bar you own in the app), and the per-side math solves for what's left after the bar.
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