Gallons to Cubic Meters Converter

Enter the volume in gallons below to get the value converted to cubic meters.


Result in Cubic Meters:

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1 gal = 0.003785 m³

Do you want to convert cubic meters to gallons?

How to Convert Gallons to Cubic Meters

To convert a measurement in gallons to a measurement in cubic meters, multiply the volume by the following conversion ratio: 0.003785 cubic meters/gallon.

Since one gallon is equal to 0.003785 cubic meters, you can use this simple formula to convert:

cubic meters = gallons × 0.003785

The volume in cubic meters is equal to the volume in gallons multiplied by 0.003785.

For example, here's how to convert 500 gallons to cubic meters using the formula above.
cubic meters = (500 gal × 0.003785) = 1.892706 m³

Gallons and cubic meters are both units used to measure volume. Keep reading to learn more about each unit of measure.

What Is a Gallon?

The US liquid gallon is a unit of fluid volume equal to four quarts, eight pints, or sixteen cups.[1] The US liquid gallon should not be confused with the US dry gallon or the imperial gallon, which are different units of measure.

The gallon is a US customary unit of volume. Gallons can be abbreviated as gal; for example, 1 gallon can be written as 1 gal.

Learn more about gallons.

What Is a Cubic Meter?

One cubic meter is equal to the volume of a cube with each edge measuring one meter.

The cubic meter, or cubic metre, is the SI derived unit for volume in the metric system. Cubic meters can be abbreviated as , and are also sometimes abbreviated as cu m, CBM, cbm, or MTQ. For example, 1 cubic meter can be written as 1 m³, 1 cu m, 1 CBM, 1 cbm, or 1 MTQ.

You can use our cubic meters calculator to calculate the volume of a space.

Learn more about cubic meters.

Gallon to Cubic Meter Conversion Table

Table showing various gallon measurements converted to cubic meters.
Gallons Cubic Meters
1 gal 0.003785 m³
2 gal 0.007571 m³
3 gal 0.011356 m³
4 gal 0.015142 m³
5 gal 0.018927 m³
6 gal 0.022712 m³
7 gal 0.026498 m³
8 gal 0.030283 m³
9 gal 0.034069 m³
10 gal 0.037854 m³
20 gal 0.075708 m³
30 gal 0.113562 m³
40 gal 0.151416 m³
50 gal 0.189271 m³
60 gal 0.227125 m³
70 gal 0.264979 m³
80 gal 0.302833 m³
90 gal 0.340687 m³
100 gal 0.378541 m³
200 gal 0.757082 m³
300 gal 1.1356 m³
400 gal 1.5142 m³
500 gal 1.8927 m³
600 gal 2.2712 m³
700 gal 2.6498 m³
800 gal 3.0283 m³
900 gal 3.4069 m³
1,000 gal 3.7854 m³


  1. National Institute of Standards and Technology, Specifications, Tolerances, and Other Technical Requirements for Weighing and Measuring Devices, Handbook 44 - 2019 Edition,

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