Conversion formula

The conversion factor from cubic feet to cubic meters is 0.0283168467117, which means that 1 cubic foot is equal to 0.0283168467117 cubic meters:

1 ft3 = 0.0283168467117 m3

To convert 646.4 cubic feet into cubic meters we have to multiply 646.4 by the conversion factor in order to get the volume amount from cubic feet to cubic meters. We can also form a simple proportion to calculate the result:

1 ft3 → 0.0283168467117 m3

646.4 ft3 → V_(m3)

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

V_(m3) = 646.4 ft3 × 0.0283168467117 m3

V_(m3) = 18.304009714443 m3

The final result is:

646.4 ft3 → 18.304009714443 m3

We conclude that 646.4 cubic feet is equivalent to 18.304009714443 cubic meters:

646.4 cubic feet = 18.304009714443 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 0.054632838137697 × 646.4 cubic feet.

Another way is saying that 646.4 cubic feet is equal to 1 ÷ 0.054632838137697 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-six point four cubic feet is approximately eighteen point three zero four cubic meters:

646.4 ft3 ≅ 18.304 m3

An alternative is also that one cubic meter is approximately zero point zero five five times six hundred forty-six point four cubic feet.

Conversion table

cubic feet to cubic meters chart

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