How many liters are in 1 kilogram of LPG?
How many liters are in 1 kilogram of LPG?
Answer
The density of LPG is 0.51 kg/L (liquid phase at 15 °C: propane 0.5076, n-butane 0.5845. A propane–butane mix has no single density — it depends on the blend).
How the volume of 1 kilogram of LPG was worked out
1 kg ÷ 0.51 kg/L
≈1.96 L
The density comes from ISO 3993:1984. Liquid phase at 15 °C: propane 0.5076, n-butane 0.5845. A propane–butane mix has no single density — it depends on the blend.
The other way round: what a liter of this weighs
This page starts from a mass and answers in liters. The opposite question — how much a given volume weighs — is what the liters to kilograms calculator is for. Both read the same density table, so the two pages agree wherever the answer is volume times density.
For LPG the density is 0.51 kg/L, so 1 kilogram takes 1.96 liters — and one liter of it weighs 0.51 kg.
Volume of the liquid, not the size of the cylinder
The number above is how much room the liquid phase occupies. A cylinder holding this much gas has to be larger: it is never filled to the brim, because expanding vapour needs room above the liquid. That is why filling limits are set in mass rather than as a share of the volume.
Related Calculations
See Also
- Liters to Kilograms - How many kilograms are in a liter of water, honey, gasoline, sand and other substances — by density
- L to Ml - Convert Liters to Milliliters
- Ml to L - Convert Milliliters to Liters
- Liters to Gallons - Convert Liters to US Gallons

How much room 1 kilogram of each substance takes
| Substance | Volume | Density, kg/L |
|---|---|---|
| Cement | 0.71–0.8 L | 1.25–1.4 |
| Diesel | 1.2 L | 0.834 |
| Gasoline | 1.35 L | 0.74 |
| Honey | 0.7 L | 1.42 |
| LPG | 1.96 L | 0.51 |
| Milk | 0.97 L | 1.03 |
| Mineral spirits | 1.28 L | 0.78 |
| Motor oil | 1.18 L | 0.85 |
| Sand | 0.5–0.61 L | 1.65–2 |
| Sugar | 1.11–1.39 L | 0.72–0.9 |
| Tomatoes | 1.67–1.82 L | 0.55–0.6 |
| Vegetable oil | 1.09 L | 0.92 |
| Wall primer | 1 L | 1 |
| Water | 1 L | 0.998 |