At One Place

18 ft to in

18 feet in inches
18 ft = 216 in
in = ft × 12

18 feet is 216 inches. To get there, multiply by 12.

Values either side

Feet near 18, converted to inches.
Feet Inches
14 ft 168
15 ft 180
16 ft 192
17 ft 204
18 ft ← 216
19 ft 228
20 ft 240
21 ft 252
22 ft 264

How the conversion works

The relationship is in = ft × 12. Both units measure length, so the conversion is a fixed factor that never changes. The figure is exact rather than approximate: since the international yard and pound agreement of 1959, an inch is defined as exactly 25.4 millimetres and a pound as exactly 0.45359237 kilograms, and every other imperial and US customary unit here is derived from those two.

Foot: Plural is "feet".

Common questions

What is 18 ft in inches?
18 ft is 216 in.
How do you convert feet to inches?
Multiply by 12.

Related pages

Sources

  1. Guide for the Use of the International System of Units (SP 811) — NIST (Public domain (US Government))
  2. The International System of Units (SI Brochure) — Bureau International des Poids et Mesures
  3. Calculated on this page — At One Place

How these figures are compiled and checked