Ans

Unit converter

Feet to inches.

Convert ft to in and in to ft. Type in either box and the other follows. Twelve to the foot, so a 6 ft door is 72 in. Timber and fixings are usually specified in whole inches.

ft → inExact definition
—
Feet to inches — common values, to 6 significant figures.
ftin
1 ft12 in
2 ft24 in
3 ft36 in
4 ft48 in
5 ft60 in
5.5 ft66 in
6 ft72 in
6.5 ft78 in
7 ft84 in
8 ft96 in
10 ft120 in
1 ft=12 in 1 in=0.08333333333 ft

Definitions

  • The foot is exactly 12 inches, or 0.3048 m. Aviation still uses it for altitude worldwide.
  • The inch has been exactly 25.4 mm since the 1959 international yard and pound agreement. Screen and wheel sizes are still quoted in it.
  • This conversion is exact by definition. 1 ft = 12 in.
  • The metre is SI; every imperial and US customary length here is defined exactly in terms of it by the 1959 international yard and pound agreement.

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 m, the unit every other length & distance 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 length & distance converter always agree.

Display precision limits significant figures rather than decimal places, because one fixed number of decimals is useless across a range this wide. Very large and very small results switch to scientific notation with a proper superscript exponent. 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 inches in a foot (12), how many feet in an inch (0.0833333), and what 6 ft is in inches (72 in).

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