Convert Gallons to Cubic Meters

1 gal = 0.00378541 m³

1 gal = 0.00378541 m³

gallons (gal) cubic meters (m³)
0.5 0.00189271
1 0.00378541
2 0.00757082
5 0.0189271
10 0.0378541
25 0.0946353
50 0.189271
100 0.378541
250 0.946353
500 1.8927
1000 3.7854

To convert gallons to cubic meters, multiply the value by the conversion factor:

1 gal = 0.00378541 m³

For example: 10 gal = 0.0378541 m³

The Conversion Formula

To convert gallons to cubic meters, multiply the value by the conversion factor: 1 gal = 0.00378541 m³. For a worked example, suppose you need to convert 25 gal to cubic meters: 25 × 0.00378541 = 0.0946353 m³. To convert in the opposite direction, divide by 0.00378541, or equivalently multiply by 264.17.

About gallons

The gallon is a unit with a split personality. The US Gallon (approx. 3.785 L) is based on the pre-1824 English wine gallon. The Imperial Gallon (approx. 4.546 L) used in the UK is about 20% larger. This divergence happened when Britain updated its standards in 1824, but the newly independent US stuck with the old wine gallon. Today, the US gallon is the standard for fuel and milk in the United States. gallons are commonly used in Gasoline sales (US), Milk jugs (US), Paint buckets, and Water consumption tracking, Aquarium sizes.

A large milk jug in the US is 1 gallon.

About cubic meters

The cubic meter (m³) is the SI derived unit of volume. It represents the space occupied by a cube with edges of one meter. It is a massive unit compared to liters, equal to 1,000 liters. It is primarily used in industry, utility billing (water and gas), and shipping (freight volume). One cubic meter of water weighs exactly one metric ton. cubic meters are commonly used in Water bills, Natural gas meters, Concrete and soil delivery, and Shipping containers, Swimming pool volume.

A standard hot tub holds about 1.5 cubic meters of water.

When Would You Convert gallons to cubic meters?

Converting between gallons and cubic meters is one of the most common volume conversions. You might need this conversion when working with international specifications, following instructions written for a different measurement system, or comparing values across different standards. Having the conversion factor (1 gal = 0.00378541 m³) memorized or bookmarked can save time in professional and everyday contexts alike.