Foot to Inch Converter
Convert feet to inches instantly. Free feet to inches calculator with formula, examples and FAQs.
Quick answer
1 feet equals 12 inches. To convert feet to inches, multiply the feet value by 12 — so 10 feet = 120 inches. This factor is exact, and the reverse conversion (inches to feet) simply divides by 12 instead of multiplying.
Converted value
12.00
1.00 feet = 12.00 inches
What is feet to inches?
Foot and Inch both measure length, so converting feet to inches restates the same quantity in a different unit. US users, pilots and anyone filling metric forms reach for this conversion regularly. The relationship is fixed and linear, which means one factor (inches = feet × 12) maps every feet value to its exact inches equivalent.
Real-world uses: why convert feet to inches?
Converting feet to inches bridges two ways of measuring the same thing. People do it most often when understanding height in metric for forms and IDs, and on the receiving side when understanding inch measurements on rulers. Having the exact value — not a rough estimate — prevents costly mistakes in paperwork, purchases and planning.
- •Converting US property and ceiling heights to metric.
- •Reading aviation altitude given in feet.
- •Checking furniture and appliance clearances.
- •Understanding height in metric for forms and IDs.
- •Understanding inch measurements on rulers.
Who uses this conversion?
How the feet to inches conversion is calculated
This is the same arithmetic that calculators and search engines use — no rounded shortcuts.
inches = feet × 12
- Both feet and inches are defined in terms of the same base unit, the metre.
- 1 feet = 0.3048 metre, and 1 inches = 0.0254 metre.
- Divide one definition by the other to get the conversion factor: 0.3048 ÷ 0.0254 = 12.
- So inches = feet × 12. Multiply any feet value by 12 to get the result in inches.
Precision: The conversion factor is exact by international definition, so the result is an exact rational number. We display it rounded to four decimal places (or four significant figures for very small values).
Example calculations
- •1 feet = 12 inches
- •6 feet = 72 inches
- •10 feet = 120 inches
feet to inches quick reference table
Common feet values converted to inches, each calculated with the exact factor.
| feet | inches |
|---|---|
| 10 | 120 |
| 25 | 300 |
| 50 | 600 |
| 100 | 1200 |
| 250 | 3000 |
| 500 | 6000 |
| 1000 | 12000 |
| 2500 | 30000 |
| 5000 | 60000 |
| 10000 | 120000 |
Common mistakes to avoid
- •Reading the result the wrong way round. Confirm the answer is in inches, not feet, before you rely on it.
- •Truncating instead of rounding, which compounds error across larger feet values.
- •Mixing metric and imperial units midway through a multi-step conversion instead of converting to a single base unit first.
Common questions about length conversions
Is this length conversion exact?
Yes. Factors such as 1 inch = 25.4 mm and 1 mile = 1,609.344 m are exact by international agreement, so the only rounding is in how many decimals we display.
Why do my results differ slightly from another tool?
Almost always because the other tool rounds the factor (e.g. 0.62 instead of 0.621371) or rounds partway through. We keep full precision and round only the final value.
Metric or imperial — which should I use?
Use metric (m, cm, km) for science and most countries, and imperial (ft, in, miles) for US and UK everyday distances. This page bridges the two exactly.
Can I round the answer?
Yes. For everyday use one or two decimals is plenty; engineering and science may need more. Round only at the end to avoid cumulative error.
History of these units
History of the foot
imperial / US customary
The foot has roots in the length of a human foot and varied widely before standardisation. The international foot is now exactly 0.3048 metres and stays common in US construction and aviation altitude.
History of the inch
imperial / US customary
The inch traditionally matched the width of a thumb and was later set at 1/12 of a foot. Since 1959 it is exactly 25.4 millimetres and remains common for screen sizes, hardware and US dimensions.
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Frequently asked questions
How do I convert feet to inches?
What is 1 feet in inches?
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