Foot to Inch Converter
One Foot equals 12 Inch (1 ft = 12 in). Multiply a Foot value by 12 to get the equivalent in Inch. Use the calculator above for instant results, or follow the formula, worked examples, and reference table below.
Formula
in = ft × 12
Multiply the Foot value by 12 to get the equivalent value in Inch.
Example Conversions
1 Foot (ft)
12 Inch (in)
5 Foot (ft)
60 Inch (in)
10 Foot (ft)
120 Inch (in)
25 Foot (ft)
300 Inch (in)
100 Foot (ft)
1200 Inch (in)
Conversion Table
| Foot (ft) | Inch (in) |
|---|---|
| 0.1 | 1.2 |
| 0.5 | 6 |
| 1 | 12 |
| 2 | 24 |
| 5 | 60 |
| 10 | 120 |
| 25 | 300 |
| 50 | 600 |
| 100 | 1200 |
| 250 | 3000 |
| 500 | 6000 |
| 1000 | 12000 |
How to Convert Manually
Use these steps to convert Foot values to Inch without the calculator.
- Write down the value in Foot (ft) that you want to convert.
- Multiply that value by 12.
- For example, 10 Foot × 12 = 120 Inch.
- Label the result as Inch (in).
Relative Size Comparison
This chart shows the visual difference in size between exactly one Foot and one Inch.
About Foot and Inch
The foot is defined as exactly 0.3048 meters (12 inches) under the 1959 international yard and pound agreement. US construction, real estate, and aviation altitude all run on feet. The inch is defined as exactly 25.4 millimeters, one twelfth of a foot. Screen sizes, pipe diameters, and US manufacturing drawings are specified in inches. One Foot equals 12 Inch (1 ft = 12 in). Foot to Inch conversion comes up most often in US construction and real estate floor plans and in aviation altitude worldwide, typically when figures need restating for screen and display sizes.
Precision and Rounding: Length factors between metric and imperial units are exact by definition (1 ft = 0.3048 m since 1959), so any rounding error comes from display precision, not the factor. Two or three decimal places suit carpentry and DIY work; machining and surveying often require four or more.
Conversion factors per NIST Special Publication 811 and the BIPM SI Brochure (9th edition) (reference).
Worked Example
15 Foot equals 180 Inch.
15 ft × 12 = 180 in
FAQ
How do I convert Foot to Inch?
Multiply the Foot value by 12 to get the equivalent value in Inch.
What is the formula for Foot to Inch?
The formula is in = ft × 12.
How many Inch are in 1 Foot?
1 Foot equals 12 Inch.
Can I convert Inch back to Foot?
Yes. 1 Inch equals 0.08333333333 Foot, and the related converter can reverse the calculation.
What are common names for Foot and Inch?
Foot is shown as ft and may also be searched as feet, foot. Inch is shown as in and may also be searched as inches, ".
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