How many cubic meters are in 1 US gallon?

1 US gallon equals 0.00378541 m³.

How do I convert cubic meters back to US gallons?

Use the reverse converter: 1 cubic meter equals 264.172 gal.

Yes. It uses the exact SI/NIST definitions of each unit and shows up to 6 significant digits.

To convert US gallons to cubic meters, multiply the value by 0.00378541178.

m³ = gal × 0.00378541178

40 gal × 0.00378541178 = 0.1514 m³

US Gallon (gal): Used for fuel and liquids in the United States. Exactly 3.785411784 litres (231 cubic inches).
Cubic Meter (m³): The SI unit of volume, used for water supply, construction and freight. Equal to 1,000 litres.

How do I convert US gallons to cubic meters?: To convert US gallons to cubic meters, multiply the value by 0.00378541178.
How many cubic meters are in 1 US gallon?: 1 US gallon equals 0.00378541 m³.
How many cubic meters are in 10 US gallons?: 10 gal equals 0.0378541 m³.
How do I convert cubic meters back to US gallons?: Use the reverse converter: 1 cubic meter equals 264.172 gal.
Is this converter accurate?: Yes. It uses the exact SI/NIST definitions of each unit and shows up to 6 significant digits.