Conversion
Us Gallons to cubic meters
1 US gal = 0.00378541 m³, derived from exact unit definitions.
—
Swap ⇆| US gal | m³ |
|---|---|
| 100 US gal | 0.3785 m³ |
| 275 US gal | 1.0410 m³ |
| 500 US gal | 1.8927 m³ |
| 1,000 US gal | 3.7854 m³ |
| 5,000 US gal | 18.9271 m³ |
| 10,000 US gal | 37.8541 m³ |
Formula
cubic meters = US gallons × 0.003785411784FAQ
How many cubic meters in a US gallon?
1 US gal = 0.00378541 m³. Multiply your US gallons value by 0.00378541.
Is this exact?
Yes — these factors derive from exact definitions: 1 US gallon = 231 cubic inches, 1 imperial gallon = 4.54609 liters, 1 inch = 2.54 cm, 1 barrel = 42 US gallons.
Why do tank specs mix US gallons and cubic meters?
US tank trade uses gallons and inches; engineering drawings and international suppliers use metric or cubic measures. This page bridges them without rounding drift.