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 688 gallons into cubic meters we have to multiply 688 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

688 gal → V_(m3)

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

V_(m3) = 688 gal × 0.0037854118 m3

V_(m3) = 2.6043633184 m3

The final result is:

688 gal → 2.6043633184 m3

We conclude that 688 gallons is equivalent to 2.6043633184 cubic meters:

688 gallons = 2.6043633184 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 0.38397100471157 × 688 gallons.

Another way is saying that 688 gallons is equal to 1 ÷ 0.38397100471157 cubic meters.

Approximate result

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

688 gal ≅ 2.604 m3

An alternative is also that one cubic meter is approximately zero point three eight four times six hundred eighty-eight 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