Kg to Gallons of Propane
Convert kilograms of Propane to US liquid gallons, Imperial gallons, and liters using verified reference density (0.4930 kg/L).
10 kg of liquid propane (lpg) equals approximately 5.35846 US Liquid Gallons.
How Many Gallons Is 1 Kg of Liquid Propane?
1 kilogram (kg) of liquid propane (LPG) equals approximately 0.5358 US liquid gallons at 15°C (0.4930 kg/L density). For portable tanks, a standard 20 lb BBQ cylinder holds ~4.0 to 4.2 gallons under the NFPA 58 80% OPD safety fill rule.
Need to size a cylinder or check gauge %? Use our dedicated Propane Tank Calculator.
Material Metrology & Physical Properties: Propane
Liquid propane (C₃H₈) is a clean-burning hydrocarbon maintained as a saturated liquid under pressure inside ASME tanks and DOT cylinders. Under GPA Standard 2145, commercial liquid propane has an exceptionally light density of 0.4930 kg/L (4.114 lbs per US gallon) at 15.6°C (60°F), with a specific gravity of approximately 0.493 to 0.504 relative to water.
Under the mandatory safety rules of **NFPA 58 (Liquefied Petroleum Gas Code)**, propane cylinders may never be filled beyond **80% of their total volumetric water capacity (WC)**. Because liquid propane expands at nearly 1.5% for every 10°F increase in ambient temperature, the top 20% cushion of vapor space is required to prevent hydrostatic pressure spikes from triggering pressure relief valve discharges.
Because pressure gauges inside propane tanks read only saturated vapor pressure—which remains constant until the very last drop of liquid evaporates—weighing cylinders in kilograms on a scale is the only reliable way to calculate remaining liquid gallons.
Extremely flammable liquefied compressed gas. Stored under pressures of 100–200 psi. Cylinders must always remain upright with operational Overfill Prevention Devices (OPD).
Commercial Packaging & Container Weights for Propane
Calibrated @ 15°C (60°F)| Container Vessel | Volume (US Gallons) | Net Mass (Kilograms) | Net Mass (Pounds) |
|---|---|---|---|
| 1 US Liquid Gallon | 1.0 gal | 1.87 kg | 4.11 lbs |
| 5-Gallon Commercial Pail | 5.0 gal | 9.33 kg | 20.57 lbs |
| 15-Gallon Heavy Carboy | 15.0 gal | 27.99 kg | 61.71 lbs |
| 55-Gallon Industrial Drum | 55.0 gal | 102.63 kg | 226.27 lbs |
| 275-Gallon IBC Bulk Tote | 275.0 gal | 513.15 kg | 1131.35 lbs |
| 1 Metric Ton (1,000 kg) | 535.9 gal | 1,000.00 kg | 2,204.62 lbs |
Propane Conversion Table (0.5 kg to 1,000 kg)
Multi-standard volumetric expansion calculated at verified density of 0.4930 kg/L.
| Weight (KG) | US Liquid Gal | Imperial Gal | Liters (L) | US Dry Gal | Weight (lbs) |
|---|---|---|---|---|---|
| 0.5 kg | 0.2679 gal | 0.2231 gal | 1.014 L | 0.2302 gal | 1.10 lbs |
| 1 kg | 0.5358 gal | 0.4462 gal | 2.028 L | 0.4605 gal | 2.20 lbs |
| 2 kg | 1.0717 gal | 0.8924 gal | 4.057 L | 0.9210 gal | 4.41 lbs |
| 5 kg | 2.6792 gal | 2.2309 gal | 10.142 L | 2.3024 gal | 11.02 lbs |
| 10 kg | 5.3585 gal | 4.4619 gal | 20.284 L | 4.6049 gal | 22.05 lbs |
| 15 kg | 8.0377 gal | 6.6928 gal | 30.426 L | 6.9073 gal | 33.07 lbs |
| 20 kg | 10.7169 gal | 8.9237 gal | 40.568 L | 9.2098 gal | 44.09 lbs |
| 25 kg | 13.3961 gal | 11.1546 gal | 50.710 L | 11.5122 gal | 55.12 lbs |
| 50 kg | 26.7923 gal | 22.3093 gal | 101.420 L | 23.0244 gal | 110.23 lbs |
| 100 kg | 53.5846 gal | 44.6185 gal | 202.840 L | 46.0488 gal | 220.46 lbs |
| 250 kg | 133.9615 gal | 111.5463 gal | 507.099 L | 115.1221 gal | 551.15 lbs |
| 500 kg | 267.9230 gal | 223.0925 gal | 1014.199 L | 230.2442 gal | 1102.31 lbs |
| 1000 kg | 535.8459 gal | 446.1851 gal | 2028.398 L | 460.4883 gal | 2204.62 lbs |
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Frequently Asked Questions
Direct answers to the most common mass-to-volume conversion queries.