Cubic Metres to Gallons Converter
Convert cubic metres to US gallons — 264.17 gallons to the cubic metre. Results update as you type; exact factors shown.
One cubic metre is 264.1721 US gallons — see the exact factor, not a rounded rule of thumb.
How the cubic metres to gallons converter works
Volumes convert through the litre (exactly 1 dm³). The US gallon is exactly 3.785411784 L (231 cubic inches); the imperial gallon is exactly 4.54609 L. A US fluid ounce is 29.5735 mL, an imperial fluid ounce 28.4131 mL; a US pint is 16 US fl oz, an imperial pint 20 imperial fl oz.
Australia is fully metric under the National Measurement Act 1960; imperial units appear only in trade with the US and in older documents.
Common volume conversions
| From | To | Units |
|---|---|---|
| 0.1 m³ | 26.4172 US gal | cubic metres to US gallons |
| 0.5 m³ | 132.086 US gal | cubic metres to US gallons |
| 1 m³ | 264.1721 US gal | cubic metre to US gallons |
| 2 m³ | 528.3441 US gal | cubic metres to US gallons |
| 3.785 m³ | 999.8912 US gal | cubic metres to US gallons |
| 5 m³ | 1,320.8603 US gal | cubic metres to US gallons |
| 10 m³ | 2,641.7205 US gal | cubic metres to US gallons |
| 20 m³ | 5,283.441 US gal | cubic metres to US gallons |
| 50 m³ | 13,208.6026 US gal | cubic metres to US gallons |
| 100 m³ | 26,417.2052 US gal | cubic metres to US gallons |
| 500 m³ | 132,086.0262 US gal | cubic metres to US gallons |
| 1,000 m³ | 264,172.0524 US gal | cubic metres to US gallons |
Units in this converter and their exact factors
| Unit | Symbol | One unit in litres |
|---|---|---|
| millilitre | mL | 0.001 litre |
| litre | L | 1 litre |
| cubic metre | m³ | 1,000 litre |
| teaspoon (metric) | tsp | 0.005 litre |
| tablespoon (metric) | tbsp | 0.015 litre |
| cup (metric) | cup | 0.25 litre |
| US fluid ounce | US fl oz | 0.0295735296 litre |
| US cup | US cup | 0.2365882365 litre |
| US pint | US pt | 0.473176473 litre |
| US gallon | US gal | 3.785411784 litre |
| imperial fluid ounce | imp fl oz | 0.0284130625 litre |
| imperial pint | imp pt | 0.56826125 litre |
| imperial gallon | imp gal | 4.54609 litre |
| cubic foot | ft³ | 28.316846592 litre |
FAQFrequently asked questions about volume conversion
How many US gallons in a cubic metre?
264.172.
And imperial gallons?
219.969.
What is 3.785 m³?
One thousand US gallons.
Where does this come up?
Tank sizing, water usage and fuel storage, where capacity is metric and consumption is quoted in gallons.
What is a cubic metre in litres?
Exactly 1,000.
Where these figures come from
- BIPM — The International System of Units (SI Brochure, 9th edition) — definitions of the base and derived units.
- NIST Special Publication 811 — Guide for the Use of the International System of Units — the exact conversion factors used here.
- National Measurement Institute (NMI) — Australia's national measurement authority.
Last checked: September 2026. Conversion factors are fixed by definition and do not change with tax years or regulations.