Convert US gallon (gal) (gal) to Cubic meter (m³) (m3)
Category: Volume
1 gal = 0.003785 m3
High-precision rounding: 6 decimals
How to convert us gallon (gal) to cubic meter (m³)
We convert by pivoting through the SI base unit for Volume and applying exact factors where applicable.
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Quick conversion table
Handy values for US gallon (gal) → Cubic meter (m³). Click a value to open that exact result.
Conversion formula
Linear unit conversions use standardized factors; many are exact by definition (e.g., 1 in = 25.4 mm, 1 ft = 0.3048 m).
Common mistakes
- Mixing US gallons (3.785 L) with Imperial gallons (4.546 L).
- Assuming kitchen ‘cup’ equals the same volume in every country.
Unit facts
- US gallon (gal): The US gallon is exactly 3.785411784 L; used for fuel, beverages, and bulk liquids.
- Cubic meter (m³): A cubic meter (m³) equals 1,000 liters; SI unit for volume.
About Volume
Volume measures the space a substance occupies. SI uses cubic meters and liters; customary units like gallons, quarts, and pints persist in recipes, fuel, and containers. Accurate volume work often requires temperature and density considerations (e.g., for fuels).
About US gallon (gal)
US gallon (gal)
Exactly 3.785411784 L. Used for fuel, containers, and recipes in the US. Beware of imperial gallon differences.
History: US defined the gallon separately from the British imperial revision; modern value is exact.
About Cubic meter (m³)
Cubic meter (m³)
SI unit of volume; equals 1,000 L. Used for gas consumption, building volume, and bulk materials. Matches SI equations for density and flow.
History: Defined by the meter since metric adoption; central to engineering calculations and CFD/ventilation sizing.