US liquid gallons to Cubic metres converter
Convert US liquid gallons (US gal) to Cubic metres (m³). Calculate a value, check the formula and compare common measurements.
Result for the values shown.
Calculations run in your browser.
What to enter
| Input | Meaning and units |
|---|---|
| Value | Enter value using the definition in the method and example. |
| From | Select the unit or currency in which the entered number is currently expressed. |
| To | Select the unit or currency you need for the answer. |
Understanding your result
The converted value describes the same volume quantity in the selected target unit. Display rounding does not add precision to the original measurement.
Common mistakes
- Confusing the source and target units, or overlooking a prefix or case-sensitive symbol.
- Mixing US and imperial gallons or treating every recipe cup as the same volume.
Check your calculation
- Convert to the target unit and then reverse the direction. Within display rounding, you should recover the original value.
Read the volume measurement guide · Calculation checks, sources and review limits
How do I convert US liquid gallons to cubic metres?
Enter the value in US liquid gallons to find the same volume quantity in cubic metres. The number changes to match the unit; the underlying quantity stays the same. Check the definitions below when a unit has more than one convention.
Common uses
- Compare capacities of containers or tanks.
- Convert recipe volumes using the stated US or imperial definitions.
How it works
For the displayed direction, 1 US gal equals 0.003785411784 m³. The engine converts through the shared volume base quantity. Cups, pints, quarts, tablespoons and teaspoons use US customary liquid measures. Imperial gallons are separate. These are volume conversions; ingredient mass also depends on density. The multiplier is derived from the two centralized unit factors. Keep full precision until the final result; displayed answers use up to 12 significant digits.
Worked example
10 US gal converts to 0.03785411784 m³. For the reverse direction, swap the units and enter 0.03785411784 m³; the result is approximately 10 US gal.
FAQ
How do I convert US gal to m³?
m³ = US gal × 0.003785411784
Which definition is used?
Cups, pints, quarts, tablespoons and teaspoons use US customary liquid measures. Imperial gallons are separate. These are volume conversions; ingredient mass also depends on density.
Common values
Use “Swap units” above for the reverse conversion. Values below are rounded to six significant digits.
| US liquid gallons | Cubic metres |
|---|---|
| 1 | 0.00378541 |
| 5 | 0.0189271 |
| 10 | 0.0378541 |
| 20 | 0.0757082 |
| 30 | 0.113562 |
| 50 | 0.189271 |
| 100 | 0.378541 |