Ans

Unit converter

Cubic feet to cubic metres.

Convert ft³ to m³ and m³ to ft³. Type in either box and the other follows. Shipping volumes, loft insulation and older UK gas meters are quoted in cubic feet; almost everything official is in cubic metres.

ft³ → m³Exact definition
—
Cubic feet to cubic metres — common values, to 6 significant figures.
ft³m³
1 ft³0.0283168 m³
5 ft³0.141584 m³
10 ft³0.283168 m³
25 ft³0.707921 m³
50 ft³1.41584 m³
100 ft³2.83168 m³
200 ft³5.66337 m³
500 ft³14.1584 m³
1000 ft³28.3168 m³
1 ft³=0.02831684659 m³ 1 m³=35.31466672 ft³

Definitions

  • The cubic foot is 28.3168 litres. UK gas meters installed before the 1990s still read in hundreds of cubic feet.
  • The cubic metre is the SI unit of volume, and holds exactly 1000 litres. Water and gas meters read in it.
  • This conversion is exact by definition. 1 ft³ = 0.02831684659 m³.
  • US and imperial units of the same name are different sizes. A US pint is 473 mL; an imperial pint is 568 mL. Every unit below says which system it belongs to.

How it works

One direction multiplies and the other divides by the same number, so nothing is lost by going back and forth.

The value passes through m³, the unit every other volume & capacity unit on the site is defined against, rather than a number written into this page on its own. That is why the figure here, the figure in the table above and the general volume & capacity converter always agree.

Display precision sets a maximum number of significant figures and trims trailing zeroes, so it changes what you see and never what was calculated. The editable box always holds a plain number at full working precision, so you can carry on from either side.

Common questions this answers: how many cubic metres in a cubic foot (0.0283168), how many cubic feet in a cubic metre (35.3147), and what 100 ft³ is in cubic metres (2.83168 m³).

From the maker of Ans — a scientific calculator you can own. Same idea: a proper instrument, nothing in the way.