Conversion formula

The conversion factor from gallons to cubic meters is 0.0037854118, which means that 1 gallon is equal to 0.0037854118 cubic meters:

1 gal = 0.0037854118 m3

To convert 640 gallons into cubic meters we have to multiply 640 by the conversion factor in order to get the volume amount from gallons to cubic meters. We can also form a simple proportion to calculate the result:

1 gal → 0.0037854118 m3

640 gal → V_(m3)

Solve the above proportion to obtain the volume V in cubic meters:

V_(m3) = 640 gal × 0.0037854118 m3

V_(m3) = 2.422663552 m3

The final result is:

640 gal → 2.422663552 m3

We conclude that 640 gallons is equivalent to 2.422663552 cubic meters:

640 gallons = 2.422663552 cubic meters

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 cubic meter is equal to 0.41276883006494 × 640 gallons.

Another way is saying that 640 gallons is equal to 1 ÷ 0.41276883006494 cubic meters.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that six hundred forty gallons is approximately two point four two three cubic meters:

640 gal ≅ 2.423 m3

An alternative is also that one cubic meter is approximately zero point four one three times six hundred forty gallons.

Conversion table

gallons to cubic meters chart

For quick reference purposes, below is the conversion table you can use to convert from gallons to cubic meters