How to load 100 kg
1 × 25 + 1 × 15 per side
On a 20 kg barbell, 100 kg is one full-size plate plus a 15. Both sides take the same plates, so the bar carries 80 kg of them in total.
The maths in four lines
| 1 | Start at the total: 100 kg. |
| 2 | Subtract the bar: 100 − 20 = 80 kg of plates. |
| 3 | Split it between the two sides: 80 ÷ 2 = 40 kg per side. |
| 4 | Build 40 kg from the biggest plate down: 1 × 25 + 1 × 15 per side. |
Check it back: 20 + 25 + 15 + 25 + 15 = 100 kg.
This is the same greedy loading the plate calculator uses, except that page also knows which plates you actually own and will tell you when a load is not reachable with them.
Other ways to make 40 kg a side
40 kg per side is the number to hit. The biggest-plate-first answer above keeps the sleeve tidy and uses 2 plates a side. If a size is missing from your stack, these are the rest of the combinations the same total allows:
- 2 × 20 per side — 2 plates
- 2 × 15 + 1 × 10 per side — 3 plates
- 1 × 20 + 2 × 10 per side — 3 plates
Halves matter: a 2.5 kg plate per side is 5 kg on the bar, which is the smallest jump most home gyms can make. Fractional plates exist for exactly this, and they are the cheapest addition to a stack — see the plate buying guide.
Warm-up ramp to 100 kg
Each step is a weight you can actually load: the percentages are rounded to the nearest 2.5 kg increment, and steps that would sit on top of each other are dropped. Reps are the ladder the warm-up calculator builds.
| Set | Kilograms | Reps | Per side |
|---|---|---|---|
| Empty bar | 20 kg | 10 | empty bar |
| 40% of top set | 40 kg | 5 | 1 × 10 |
| 60% of top set | 60 kg | 5 | 1 × 20 |
| 80% of top set | 80 kg | 3 | 1 × 25 + 1 × 5 |
| Working set | 100 kg | — | 1 × 25 + 1 × 15 |
Set your own top set, bar weight and rep targets in the warm-up calculator, which also handles a bar that is not 20 kg.
100 kg in lb
100 kg is 220.46 lb on the nose, and lb plates come in fixed sizes, so what goes on the bar is the nearest weight you can actually build — which is exactly what the kg/lb converter returns.
| Lb total | Per side | Against 100 kg |
|---|---|---|
| 220 lb | 1 × 45 + 1 × 35 + 1 × 5 + 1 × 2.5 | the closest you can load |
| 215 lb | 1 × 45 + 1 × 35 + 1 × 5 | 5.46 lb below the exact conversion |
This is the trap when a programme switches units mid-block. The barbell weight guide explains why the nearest loadable weight is often not the nearest number, and the loading chart shows both ladders side by side.
What lifters mean by 100 kg
100 kg is 30 kg more than 1 full-size plate per side (70 kg), so it is a milestone weight with an extra 15 kg on each side — the reason odd totals eat your small plates first. People count plates rather than kilos because the bar is loaded symmetrically: naming one side describes both. The convention breaks across units — a 25 kg plate gym and a 25 lb plate gym are doing different maths, which is why the plate-milestone page and the full loading chart exist.
If 100 kg is a working weight rather than a one-rep max, the 1RM calculator works the other way round: from a set you completed to the max it implies, and the percentage chart turns that max back into training loads.
Questions about loading 100 kg
How many plates is 100 kg?
100 kg is 1 × 25 + 1 × 15 per side on a 20 kg bar: 20 + 25 + 15 + 25 + 15 = 100 kg.
Is 100 kg the weight including the bar?
Yes. Every barbell total quoted in gyms includes the bar. For 100 kg that leaves 80 kg of plates, so (100 − 20) ÷ 2 = 40 kg per side.
What if my bar is not 20 kg?
Same maths, different bar weight: (100 − 15) ÷ 2 = 42.5 kg per side on a 15 kg bar (the standard women's bar). Set the bar you actually have in the plate calculator and it loads the rest.
What is 100 kg in lb?
100 kg is 220.5 lb exactly. The nearest weights you can actually load in lb are 220 lb (1 × 45 + 1 × 35 + 1 × 5 + 1 × 2.5 per side) and 215 lb (1 × 45 + 1 × 35 + 1 × 5 per side).
Can I load 100 kg without 25s?
Yes. 2 × 20 per side; 2 × 15 + 1 × 10 per side also makes 40 kg a side.
What to buy to load this
The loading above assumes a full gym set already exists. Building one, three purchases decide which weights you can reach - the bar, the plates, and the small pairs that make the in-between numbers lift-able. Each link opens an Amazon search, where prices and stock change hourly.
- Olympic plate set in kilograms — the 25 kg and 20 kg pairs that carry this weight and everything heavier.
- Fractional plate pair — 1.25 kg a side turns 5 kg jumps into 2.5 kg ones.
- 20 kg Olympic barbell — the bar every number on this page assumes.
What to buy first, and for how much, is a different question: the home gym builder sizes a whole stack against a budget and a floor area, and the plate, barbell and rack guides say what to check before paying.
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