Convert feet to inches — including ft’in” height input. 6 ft = 72 in; 5’8″ = 68 in.
Calculation steps
1 foot equals 12 inches exactly, so to go from feet to inches, multiply by 12. Example: 6 ft × 12 = 72 in. When height is given as feet’inches” (for example 5’8”), convert the feet portion first and add the extra inches: 5 × 12 + 8 = 60 + 8 = 68 in. This calculator has a dedicated ft’in” input tab for that case.
What is a foot?
The foot (symbol ft or the single prime ’) is the base length unit in the imperial and US customary systems, defined as exactly 0.3048 m under the 1959 international yard and pound agreement. One foot is divided into 12 inches. Heights, rooms, ceilings and ladders in the US are almost always stated in feet, with fractions expressed as inches.
What is an inch?
The inch (symbol in or the double prime ”) is 1/12 of a foot, defined as exactly 25.4 millimetres. Inches are the default unit for fine measurement in the US: lumber thickness, hardware (1/2” bolt, 3/4” pipe), paper sizes, screen diagonals, picture frames and tyre rim diameters. 1 in = 2.54 cm.
Height conversion (ft’in” → in)
When someone says they are 5’8”, that means 5 feet 8 inches. To turn that into total inches, multiply the feet by 12 and add the inches: 5 × 12 + 8 = 68 in. A few common heights: 5’0” = 60 in, 5’4” = 64 in, 5’8” = 68 in, 6’0” = 72 in, 6’2” = 74 in, 6’4” = 76 in. Use the ft’in” tab above to convert directly.
Lumber and hardware
US lumber is sold by the linear foot, but cut lists, layouts and drilling depths use inches. A 10-ft board is 120 in; an 8-ft stud is 96 in (standard pre-cut 92⅝ in for framed walls). Pipe, bolts and fittings are always in inches (1/2”, 3/4”, 1”). Multiply feet by 12 when ordering fasteners or hangers by the inch.
Rooms, doors and windows
A standard US room might be listed as 12’ × 14’, which is 144 in × 168 in (365.8 cm × 426.7 cm). Interior doors are commonly 32” or 36” wide (2 ft 8 in or 3 ft 0 in). Ceilings are often 8 ft (96 in) or 9 ft (108 in). When ordering blinds, curtains or mouldings, convert feet to inches first so the shop’s size chart matches.
Conversion table
| Feet (ft) | Inches (in) | Metres (m) |
|---|---|---|
| 1 ft | 12 in | 0.3048 m |
| 2 ft | 24 in | 0.6096 m |
| 3 ft | 36 in | 0.9144 m |
| 5 ft | 60 in | 1.524 m |
| 5.5 ft | 66 in | 1.676 m |
| 6 ft | 72 in | 1.829 m |
| 8 ft | 96 in | 2.438 m |
| 10 ft | 120 in | 3.048 m |
| 12 ft | 144 in | 3.658 m |
Frequently asked questions
How do you convert feet to inches?
Multiply the feet value by 12, because 1 foot = 12 inches. Example: 6 ft × 12 = 72 in. For fractional feet, multiply first and round: 5.5 ft × 12 = 66 in; 7.25 ft × 12 = 87 in. For a feet’inches” value like 5’8”, multiply the feet and add the extra inches: 5 × 12 + 8 = 68 in.
What is 5’8” in inches?
5 feet 8 inches equals 68 inches. The math: 5 × 12 + 8 = 60 + 8 = 68 in. In centimetres, that is 172.72 cm (68 × 2.54). This is a common adult height in the US. Use the dedicated ft’in” tab above to enter the two parts separately.
How many inches is 6 feet?
6 feet equals exactly 72 inches (6 × 12 = 72). In metric that is 182.88 cm or 1.8288 m. Other common heights: 5’6” = 66 in, 5’10” = 70 in, 6’2” = 74 in, 6’4” = 76 in, 6’6” = 78 in.
How many inches is 8 feet?
8 feet equals exactly 96 inches (8 × 12 = 96). This matches standard US residential wall height (8 ft) and the long side of a 4’ × 8’ plywood sheet. For higher ceilings: 9 ft = 108 in, 10 ft = 120 in, 12 ft = 144 in.
Are US and UK feet the same length?
Yes. Under the 1959 international yard and pound agreement, the US, UK, Canada, Australia, New Zealand and South Africa all define 1 foot as exactly 0.3048 m and 1 inch as 25.4 mm. Before 1959 a tiny difference existed (about 2 ppm), but modern measurements are identical worldwide, and a 6-ft person is 1.8288 m everywhere.
This converter turns feet (ft) into inches (in) using the exact definition 1 ft = 12 in. Enter feet and get inches: 6 ft = 72 in, 8 ft = 96 in (a standard US wall), 10 ft = 120 in. A dedicated ft’in” input tab accepts height in the US format directly — 5’8″ = 68 in (5 × 12 + 8), 6’0″ = 72 in, 6’2″ = 74 in — so you don’t have to do the arithmetic yourself. Side outputs also show yards, centimetres, metres, millimetres, kilometres and miles, useful for comparing lumber, hardware, ceilings and room sizes between US customary and metric units.