Plate Calculator
Enter your target barbell weight and get the exact plates to load per side — in kg or lbs, instantly.
Plate Calculator
Plates per side for any target weight
Uses a greedy algorithm: fills each side with the largest possible plates first, then progressively smaller ones. Works for both metric (kg) and imperial (lbs) plate sets.
Standard Plate Sets
| Metric (kg) | Imperial (lbs) |
|---|---|
| 25, 20, 15, 10, 5, 2.5, 1.25 kg | 45, 35, 25, 10, 5, 2.5, 1.25 lb |
How to Load a Barbell — Plate Calculator Guide
Loading a barbell correctly is a fundamental gym skill, but calculating which plates to use — especially for precise percentage-based training — takes mental effort mid-session. The plate calculator removes that friction instantly. Enter your target barbell weight, select your bar weight (standard 20 kg / 44 lb Olympic bar, or a 15 kg women's bar), and the calculator outputs the exact plate combination for each side, from largest to smallest.
The standard Olympic plate set includes 25 kg, 20 kg, 15 kg, 10 kg, 5 kg, 2.5 kg, 1.25 kg plates per side (and their lb equivalents: 45 lb, 35 lb, 25 lb, 10 lb, 5 lb, 2.5 lb, 1.25 lb). High-end gym setups also include fractional plates — 0.5 kg, 0.25 kg — which are invaluable for micro-loading: adding the minimum increment possible to keep progressive overload going when you can no longer jump a full plate. For percentage-based programs like 5/3/1 or any linear progression, working weights often land between standard plate increments, and fractional plates solve that problem.
Always load plates symmetrically — the same weight on both sides — and from heaviest to lightest, collar outward. For safety, always use collars (spring clips or locking collars) to prevent plates shifting during the lift. On squat racks and deadlift platforms, having plates already sorted by weight at the side of the rack speeds up plate changes between warm-up and working sets. Many lifters use the calculator to pre-plan their warm-up progression: for a 180 kg squat, working backwards to 60 kg bar, 80 kg, 100 kg, 120 kg, 140 kg, 160 kg, then 180 kg — minimizing plate changes between sets by only adding rather than removing and re-adding plates where possible.
How to Load a Barbell Safely
Always load symmetrically — identical weight on both ends. Collar each side after loading. Put heavier plates closest to the sleeve, lighter ones toward the collar. Never load all weight on one side first.
Common Barbell Loadings
| Metric total | Per side | Imperial total | Per side |
|---|---|---|---|
| 60 kg | 2×20 | 135 lb | 2×45 |
| 80 kg | 20+10+5+5 | 185 lb | 45+25+5+2.5 |
| 100 kg | 2×25+5 | 225 lb | 2×45+25+2.5 |
| 140 kg | 25+20+15 | 315 lb | 3×45+2.5 |