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  7. Convert gallons to cubic meters

Convert gallons to cubic meters

Convert gallon (US) (gal (US)) to cubic meter (m^3) instantly.

Calculation

value × 0.003785411784

Quick ConversionConverted
1 gal (US)0.003785 m^3
5 gal (US)0.018927 m^3
10 gal (US)0.037854 m^3
100 gal (US)0.378541 m^3
1,000 gal (US)3.785412 m^3

gallon (US)

A US liquid gallon is a US customary volume unit equal to 231 cubic inches.

US gallons are used for liquid capacity in fuel, water, appliances, containers, and consumer products in the United States.

gal_us is used for fuel, water tanks, pools, aquariums, irrigation, beverages, appliances, and liquid storage.

cubic meter

A cubic meter is the volume of a cube one meter on each side.

Cubic meters are used for large metric volumes in storage, utilities, construction, shipping, and materials.

m3 is used for tanks, pools, rooms, freight, concrete, soil, water use, and large container capacity.

How to Convert gallon (US) to cubic meter

Mathematically, cubic meter (m^3) = gallon (us) (gal (US)) converted with the formula below.

1 gal (US) = 0.003785 m^3

1 m^3 = 264.172052 gal (US)

Formula: value × 0.003785411784

Example: 15 gal (US) = 0.056781 m^3

  1. Start with the volume in US gallons (gal_us).
  2. Multiply by 0.003785411784 to convert US gallons into cubic meters.
  3. Use cubic meters when the volume is large enough for metric storage, utility, or freight reporting.

Precision note: Use the exact US liquid gallon definition. Round the final cubic-meter value according to whether it is for storage, billing, shipping, or broad comparison.

How many gal (US) in m^3 and m^3 in gal (US)

1 gal (US) = 0.003785 m^3

1 m^3 = 264.172052 gal (US)

gallon (US) [gal (US)]cubic meter [m^3]
0.01 gal (US)0.000038 m^3
0.1 gal (US)0.000379 m^3
1 gal (US)0.003785 m^3
2 gal (US)0.007571 m^3
5 gal (US)0.018927 m^3
10 gal (US)0.037854 m^3
20 gal (US)0.075708 m^3
50 gal (US)0.189271 m^3
100 gal (US)0.378541 m^3

Common Use Cases for gal (US) to m^3

  • Converting tank, pool, or reservoir capacity from US gallons to cubic meters.
  • Preparing water, fuel, or chemical storage volumes for metric reporting.
  • Comparing US gallon container sizes with cubic-meter bulk volume.
  • Checking utility, shipping, irrigation, or storage estimates across systems.

FAQ

How many cubic meters are in one US gallon?

One US gallon is exactly 0.003785411784 cubic meters.

How many US gallons are in one cubic meter?

One cubic meter is about 264.172 US gallons.

Is this using US gallons or imperial gallons?

This page uses US liquid gallons. Imperial gallons are larger and require a different conversion.

More gallon (US) conversions

  • gallons to cubic kilometers
  • gallons to cubic centimeters
  • gallons to mm3
  • gallons to liters
  • gallons to ml
  • gallons to quarts
  • gallons to pints
  • gallons to cups