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Cubic Meters to US Gallons (m³ to gal) Converter

1 cubic meter (m³) = 264.172 US gallons (gal). To convert cubic meters to US gallons, multiply by 264.172: 25 m³ × 264.172 = 6,604.3 gal. Also searched as cubic metres to US gallons.

1 m³ = 264.1720523581 gal
Convert the other way: US Gallons to Cubic Meters

Quick facts

How to convert cubic meters to US gallons

  1. Take the value in cubic meters.
  2. Multiply it by 264.172 (the number of US gallons in one cubic meter).
  3. Round the result to the precision you need.
gal = m³ × 264.172

Worked example: 25 m³ × 264.172 = 6604.3 gal.

To convert US gallons back to cubic meters, multiply by 0.00378541, or divide by 264.172.

Source: NIST Handbook 44, Appendix C, and NIST SP 811 (US customary volume units).

Cubic Meters to US Gallons conversion table

Cubic Meters to US Gallons conversion table
Cubic Meters [m³]US Gallons [gal]
0.01 m³2.6417205236 gal
0.1 m³26.4172052358 gal
1 m³264.1720523581 gal
2 m³528.3441047163 gal
3 m³792.5161570744 gal
5 m³1320.8602617907 gal
10 m³2641.7205235815 gal
20 m³5283.441047163 gal
50 m³13208.6026179074 gal
100 m³26417.2052358148 gal
1000 m³264172.0523581484 gal

m³ to gal chart from 1 to 100

US Gallons to Cubic Meters conversion table

US Gallons to Cubic Meters conversion table
US Gallons [gal]Cubic Meters [m³]
0.01 gal0.0000378541 m³
0.1 gal0.0003785412 m³
1 gal0.0037854118 m³
2 gal0.0075708236 m³
3 gal0.0113562354 m³
5 gal0.0189270589 m³
10 gal0.0378541178 m³
20 gal0.0757082357 m³
50 gal0.1892705892 m³
100 gal0.3785411784 m³
1000 gal3.785411784 m³

Cubic Meters vs US Gallons

Cubic MeterUS Gallon
Symbolm³gal
Equals1 m³ = 264.172 gal1 gal = 0.00378541 m³

What is a cubic meter?

The SI derived unit of volume, equal to 1,000 liters. Used for large volumes such as water usage, shipping containers, and concrete.

What is a US gallon?

A US customary unit equal to 4 quarts. Used in the US for fuel, milk, and paint.

Frequently asked questions

How many US gallons are in a cubic meter?

There are 264.172 US gallons in 1 cubic meter (1 m³ = 264.1720523581 gal).

How many cubic meters are in a US gallon?

There are 0.00378541 cubic meters in 1 US gallon (1 gal = 0.0037854118 m³).

How do I convert cubic meters to US gallons?

Multiply the number of cubic meters by 264.172. For example, 10 m³ × 264.172 = 2,641.72 gal. To convert back, multiply by 0.00378541.

What is 10 m³ in US gallons?

10 m³ = 2,641.72 gal.

What is 100 m³ in US gallons?

100 m³ = 26,417.2 gal.

Is the conversion exact?

Yes. The factor comes from the official definitions of both units (NIST Handbook 44, Appendix C, and NIST SP 811 (US customary volume units)). Results are shown to up to 10 decimal places; round them to suit your purpose.

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Reviewed by

Dr. Muhammad Amjad Khadim PhD Mathematics

Dr. Muhammad Amjad Khadim holds a PhD in Mathematics. He writes and reviews the guides on pakmath.com and checks every formula, conversion factor and worked example against published standards and official guidance before it goes live. Spotted an error? Tell us and it will be corrected.

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First published 28 October 2026 · Last reviewed 5 November 2026