Convert US gallons to cubic meters
1 gal = 0.00378541 m³. Change the amount below, or read the formula and the reference table further down.
1 US gallon equals
cubic meters
1 gal = 0.00378541 m³
The formula
US gallons and cubic meters both measure volume from the same zero, so a single multiplier does the job.
m³ = gal × 0.0037854118
Going the other way? Convert cubic meters to US gallons.
US gallons to cubic meters table
Common values, rounded for reading.
| US gallons (gal) | Cubic meters (m³) |
|---|---|
| 1 | 0.003785 |
| 2 | 0.007571 |
| 3 | 0.011356 |
| 4 | 0.015142 |
| 5 | 0.018927 |
| 6 | 0.022712 |
| 7 | 0.026498 |
| 8 | 0.030283 |
| 9 | 0.034069 |
| 10 | 0.037854 |
| 15 | 0.056781 |
| 20 | 0.075708 |
| 25 | 0.094635 |
| 30 | 0.113562 |
| 40 | 0.151416 |
| 50 | 0.189271 |
| 75 | 0.283906 |
| 100 | 0.378541 |
| 250 | 0.946353 |
| 500 | 1.8927 |
| 1,000 | 3.7854 |
Questions people ask
- How many cubic meters are in a US gallon?
- One US gallon equals 0.0037854118 cubic meters.
- How do I convert US gallons to cubic meters by hand?
- Multiply the number of US gallons by 0.0037854118. For a rough check, 0.004 is close enough for most everyday use.
- What is 1 US gallon in cubic meters?
- 1 US gallon is 0.00378541 cubic meters.
Calcuit generates this page from a unit table, so the factors here match every other page on the site.