The gallon is defined as the imperial system, and there are two terms of this liquid unit and the dry gallon. There are so many definitions and the redefinitions of this unit. The term gallon is derived from the old northern French. The corn and the dry gallon is used in the US, by the dry commodities.

## gallons to cubic meters

The cubic meter is the unit of the volume, the SI unit of the volume is m^3, the volume of the cube with the edges one meters in length.

**Cubic decameter multiples**

A volume of the cube of side length one decameters and its value is 10 m, and its value is equal to the value of megalitre

Cubic hectometer multiples

It is also the unit of the cube of the side length of one hectometer which is equal to the 100 m and it is also equal to the gigalitre.

In civil engineering, the abbreviated MCM for millions of the cubic meter is

1 Hm^3 = 1000000 m^3 = 1 Gl.

**A formula for the conversion**

The formula for the conversion of the gallon from a cubic meter is here, the value of the 1 gal is equal to the 0.003785 m^3.

1 gal = 0.003785 m^3

If we want to calculate the numbers of the gallon to the cubic meter than the formula is

Cubic meter = value of the n gallon * 0.003785.

**Conversion:**

- The value of the 1 gallon is equal to the 0.00378541 cubic meters.
- The value of the 2 US liquid gallons is equal to the 0.00757082 cubic meters.
- The value of the 3 gallons is equal to the 0.0113562 cubic meters.
- The value of the 5 US liquid gallon is equal to the 0.0189271 cubic meters.