US gallons to Cubic metres Converter
Convert us gallons (gal) to cubic metres (m³) instantly. Volume conversions help with baking from American recipes, comparing petrol prices quoted per gallon abroad with pump prices per litre here, and reading PUB water bills in cubic metres.
Result
- Cubic metres
- 0.003785 m³
How to use the us gallons to cubic metres converter
- Enter the us gallons (gal).
- The results update as you type, or press Calculate.
- Read the cubic metres first, then the supporting figures below it.
Formula
Cubic metres = us gallons × 0.00378541
Worked example
For example, with these inputs:
- US gallons (gal): 1
the calculator returns:
- Cubic metres: 0.003785 m³
US gallons to Cubic metres table
| US gallons | Cubic metres |
|---|---|
| 1 gal | 0.003785 m³ |
| 2 gal | 0.007571 m³ |
| 5 gal | 0.018927 m³ |
| 10 gal | 0.037854 m³ |
| 20 gal | 0.075708 m³ |
| 25 gal | 0.094635 m³ |
| 50 gal | 0.189271 m³ |
| 100 gal | 0.378541 m³ |
| 250 gal | 0.946353 m³ |
| 500 gal | 1.8927 m³ |
| 1,000 gal | 3.7854 m³ |
About this conversion
Volume conversions help with baking from American recipes, comparing petrol prices quoted per gallon abroad with pump prices per litre here, and reading PUB water bills in cubic metres.
For everyday use, three or four significant figures are usually enough. Engineering, science and trade documents may need more, and rounding should happen only at the end of a calculation.
Singapore adopted the metric system in the 1970s, replacing imperial units and traditional Chinese measures in most official uses. Metric units are now standard in schools, trade and government, but older units survive in property, markets and imported goods.
Frequently asked questions
How many cubic metres are in one us gallon?
1 gal = 0.003785 m³.
How do I convert gal to m³?
Cubic metres = us gallons × 0.00378541.