Barbell Plate Loading Calculator
Plate breakdown per side: 45 / 35 / 25 / 10 / 5 / 2.5 lb (or 25 / 20 / 15 / 10 / 5 / 2.5 / 1.25 kg).
Result
Loading calculator…
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How to use this calculator
- Enter target total weight (with bar).
- Enter bar weight (45 lb or 20 kg standard).
- Pick unit.
- Read per-side plate count.
About this calculator
Loading a barbell is a greedy bin-pack: per-side weight = (target − bar) / 2, then decompose using available plate denominations starting with the heaviest. A 45-lb Olympic bar to 225 lb total = (225 − 45) / 2 = 90 lb per side = 1×45 + 1×25 + 1×10 + 2×5 (wait — better: 2×45 = 90 cleanly). The greedy algorithm always finds the shortest plate count for standard denominations. For unusual targets like 220 or 215, you may need fractional plates (2.5 or 1.25 in kg).
Frequently asked
Why greedy?+
For standard plate denominations (45/35/25/10/5/2.5), greedy = optimal. With non-standard plates (20-lb bumpers etc.), it may fail.
Show my plate progression?+
For 225: load 45+45 each side (warmup includes 135 = 1 plate, 185 = 1 plate + 25 + 10 + 10, 225 = 2 plates each side).
Bumper plates only?+
Bumpers use 45/35/25/15/10 lb denominations — slightly different. Most gyms have a mix of bumpers and metal change plates.
Why 1.25 kg micro-plates?+
Smaller-than-2.5 jumps for slow progression. 1.25 kg = 2.5 lb micro-plates (Fractionals).
Bar slightly heavier than nominal?+
Many cheaper bars are 44-46 lb. Verify with a scale; matters for competitive lifters.
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