Convert feet to inches

Formula: in = ft × 12

ft to in quick reference table

Everyday ft values, converted

• 6 ft = 72 in — an adult height in feet.
• 100 ft = 1,200 in — a building or plot measurement.

Where ft to in comes up

Length conversions come up in DIY and construction, screen and print sizing, running distances, and clothing or furniture measurements ordered from abroad. Mixed-unit plans are the usual reason a cut ends up wrong.

Doing ft to in in your head

Multiply by 12 for a close estimate; the calculator above keeps the full factor of 12.

Precision and rounding

One foot is exactly 12 inches under the current definitions of both units, so the only judgement call is how many digits you keep. Two decimal places is already finer than most household scales and tape measures can read, while engineering and medical work usually keeps the full factor and rounds once at the end rather than at every step.