Cooking oils are usually less dense than water, so 1 kilogram of cooking oil occupies more than 1 kilogram of water by volume. At a representative density of 0.92 kg/L, 1 kg of oil is about 0.287 US gallons or 0.239 imperial gallons.
Typical cooking-oil comparison
| Oil | Practical density | US gallons from 1 kg |
|---|---|---|
| Vegetable oil | 0.92 kg/L | 0.287 gal |
| Canola oil | 0.92 kg/L | 0.287 gal |
| Olive oil | 0.91 kg/L | 0.290 gal |
| Coconut oil, liquid | 0.92 kg/L | 0.287 gal |
These are planning values, not universal product specifications.
Common conversions at 0.92 kg/L
| Oil mass | Approximate US gallons |
|---|---|
| 1 kg | 0.287 gal |
| 5 kg | 1.436 gal |
| 10 kg | 2.871 gal |
| 25 kg | 7.178 gal |
| 100 kg | 28.714 gal |
Formula
US gallons = kilograms ÷ oil density ÷ 3.785411784
For 10 kg of oil at 0.92 kg/L:
10 ÷ 0.92 ÷ 3.785411784 = 2.871 US gallons
Use the cooking-oil calculator for a quick estimate. For a specific packaged product, use the custom-density calculator with the manufacturer’s density.
Why oil type and temperature matter
Different oils have different fatty-acid profiles and additives. Oil also expands when heated, so volume readings taken during cooking or filling may not match a room-temperature reference. Food-production measurements should follow the product specification and the plant’s approved temperature and weighing procedure.
Bottom line
For a general estimate, use 0.92 kg/L for many cooking oils. State the oil type, density, temperature, and gallon standard when accuracy matters.
Sources & References
- NIST: SI Units and Volume Measurement Standards
- BIPM: The International System of Units (SI Brochure)
- The Engineering ToolBox: Liquids Densities Reference
- USDA FoodData Central: Food and Beverage Reference Values
- For product-specific density, use the manufacturer’s verified Technical Data Sheet (TDS) or Safety Data Sheet (SDS) at 20°C (68°F).
