Convert Foot to Inch
1 foot = 12 inch (in). For example, 10 foot = 120 inch and 100 foot = 1,200 inch. Type any value below to convert foot to inch both ways — it runs entirely in your browser.
Quick answer: Foot to Inch
1 Foot = 12 Inch (ft → in). To convert foot to inch, multiply by 12. To convert inch to foot, multiply by 0.08333333. The converter at the top does this instantly and both ways; the sections below give the formula, worked examples, a full conversion chart and answers to the most common foot-to-inch questions.
How to convert Foot to Inch
To convert foot to inch, multiply the number of foot by the conversion factor 12, because 1 ft = 12 in. The conversion is linear, so the same factor works for any value — whole numbers, decimals or fractions. For the reverse direction, 1 in = 0.08333333 ft, so you divide by 12 (or multiply by 0.08333333) to turn inch back into foot.
in = ft × 12 ·
ft = in × 0.08333333
- Write down the value you want to convert, in foot.
- Multiply it by 12.
- The result is the same area/length/quantity expressed in inch.
Foot to Inch — worked examples
Each row shows the exact arithmetic so you can follow the conversion step by step. For example, 5 foot is 60 inch because 5 ft × 12 = 60 in.
| Foot | Calculation | Inch |
|---|---|---|
| 1 ft | 1 ft × 12 = 12 in | 12 in |
| 2 ft | 2 ft × 12 = 24 in | 24 in |
| 3 ft | 3 ft × 12 = 36 in | 36 in |
| 5 ft | 5 ft × 12 = 60 in | 60 in |
| 7 ft | 7 ft × 12 = 84 in | 84 in |
| 10 ft | 10 ft × 12 = 120 in | 120 in |
| 12 ft | 12 ft × 12 = 144 in | 144 in |
| 15 ft | 15 ft × 12 = 180 in | 180 in |
| 20 ft | 20 ft × 12 = 240 in | 240 in |
| 25 ft | 25 ft × 12 = 300 in | 300 in |
| 50 ft | 50 ft × 12 = 600 in | 600 in |
| 100 ft | 100 ft × 12 = 1,200 in | 1,200 in |
Common Foot to Inch conversions
These are the foot-to-inch values people look up most often. Every figure is computed from the exact factor, so you can rely on them for quick reference:
- 1 foot = 12 inch
- 2 foot = 24 inch
- 2.5 foot = 30 inch
- 3 foot = 36 inch
- 4 foot = 48 inch
- 5 foot = 60 inch
- 6 foot = 72 inch
- 7 foot = 84 inch
- 8 foot = 96 inch
- 9 foot = 108 inch
- 10 foot = 120 inch
- 12 foot = 144 inch
- 15 foot = 180 inch
- 20 foot = 240 inch
- 25 foot = 300 inch
- 30 foot = 360 inch
- 50 foot = 600 inch
- 75 foot = 900 inch
- 100 foot = 1,200 inch
- 200 foot = 2,400 inch
- 500 foot = 6,000 inch
- 1000 foot = 12,000 inch
Foot to Inch conversion chart (both directions)
The chart below converts foot to inch and inch to foot side by side, so it works whichever way you need. 1 foot = 12 inch, and 1 inch = 0.08333333 foot.
| Foot → Inch | Inch → Foot |
|---|---|
| 0.25 ft = 3 in | 0.25 in = 0.02083333 ft |
| 0.5 ft = 6 in | 0.5 in = 0.04166667 ft |
| 1 ft = 12 in | 1 in = 0.08333333 ft |
| 2 ft = 24 in | 2 in = 0.1666667 ft |
| 3 ft = 36 in | 3 in = 0.25 ft |
| 4 ft = 48 in | 4 in = 0.3333333 ft |
| 5 ft = 60 in | 5 in = 0.4166667 ft |
| 6 ft = 72 in | 6 in = 0.5 ft |
| 7 ft = 84 in | 7 in = 0.5833333 ft |
| 8 ft = 96 in | 8 in = 0.6666667 ft |
| 9 ft = 108 in | 9 in = 0.75 ft |
| 10 ft = 120 in | 10 in = 0.8333333 ft |
| 12 ft = 144 in | 12 in = 1 ft |
| 15 ft = 180 in | 15 in = 1.25 ft |
| 20 ft = 240 in | 20 in = 1.666667 ft |
| 25 ft = 300 in | 25 in = 2.083333 ft |
| 30 ft = 360 in | 30 in = 2.5 ft |
| 40 ft = 480 in | 40 in = 3.333333 ft |
| 50 ft = 600 in | 50 in = 4.166667 ft |
| 75 ft = 900 in | 75 in = 6.25 ft |
| 100 ft = 1,200 in | 100 in = 8.333333 ft |
| 150 ft = 1,800 in | 150 in = 12.5 ft |
| 200 ft = 2,400 in | 200 in = 16.66667 ft |
| 250 ft = 3,000 in | 250 in = 20.83333 ft |
| 500 ft = 6,000 in | 500 in = 41.66667 ft |
| 1000 ft = 12,000 in | 1000 in = 83.33333 ft |
Foot vs Inch: which is bigger?
A foot is the larger unit: one foot equals 12 inchs. Put another way, you need 12 inchs to make a single foot.
What is a Foot? History, origin and usage
The foot is one of the most ancient units, based on the length of a human foot, and appeared in the Greek, Roman, Chinese and English systems with values ranging from about 250 to 335 mm. The English foot was eventually fixed at 12 inches, and since the 1959 international agreement it equals exactly 0.3048 metres.
The foot is still used in the US and UK for human height, building dimensions and, worldwide, aviation altitudes, since pilots almost everywhere report altitude in feet. It divides into 12 inches, and three feet make a yard.
Aircraft altitudes are measured in feet even in fully metric countries, a legacy of aviation's English-speaking origins. Historically the foot's length differed not only between countries but sometimes between trades within a single city.
What is a Inch? History, origin and usage
The inch takes its name from the Latin uncia, 'a twelfth part', because it was one-twelfth of a Roman foot, the same root that gave English the word 'ounce'. It was also understood as the width of a man's thumb, and one medieval English rule averaged the thumb-breadths of three different men.
The inch is used in the US, UK and Canada for screen sizes, paper, body measurements and countless engineering contexts. Since 1959 it is defined as exactly 2.54 centimetres.
An old English statute defined the inch as three barleycorns laid end to end, a standard that even shaped shoe sizing. Screen, tyre and wheel sizes are still quoted in inches almost everywhere in the world.
Convert 1 Foot to other units
It can help to see a foot next to the other units it is commonly compared with. One foot (ft) is equal to:
| 1 Foot equals | Unit |
|---|---|
| 0.0003048 km | Kilometre |
| 0.3048 m | Metre |
| 3.048 dm | Decimetre |
| 30.48 cm | Centimetre |
| 304.8 mm | Millimetre |
| 304,800 µm | Micrometre |
| 0.0001893939 mi | Mile |
| 0.3333333 yd | Yard |
| 12 in | Inch |
| 0.0001645788 nmi | Nautical Mile |
| 0.001515152 fur | Furlong |
| 0.01515152 ch | Chain |
| 1.515152 li | Link |
| 0.06060606 rd | Rod |
| 0.06060606 pole | Pole |
| 0.1666667 ftm | Fathom |
| 3 hand | Hand |
| 1.333333 span | Span |
| 2.666667 finger | Finger |
| 0.6666667 cubit | Cubit |
| 0.05 rope | Rope |
| 0.16764 ken | Ken |
| 0.00006313131 lea | League |
| 864 pt | Point |
| 0.000000000002037462 AU | Astronomical Unit |
| 0.00000000000000003221739 ly | Light-year |
| 0.03048 dam | Decametre |
| 0.003048 hm | Hectometre |
| 0.00005485961 nl | Nautical League |
Convert 1 Inch to other units
One inch (in) is equal to:
| 1 Inch equals | Unit |
|---|---|
| 0.0000254 km | Kilometre |
| 0.0254 m | Metre |
| 0.254 dm | Decimetre |
| 2.54 cm | Centimetre |
| 25.4 mm | Millimetre |
| 25,400 µm | Micrometre |
| 0.00001578283 mi | Mile |
| 0.02777778 yd | Yard |
| 0.08333333 ft | Foot |
| 0.0000137149 nmi | Nautical Mile |
| 0.0001262626 fur | Furlong |
| 0.001262626 ch | Chain |
| 0.1262626 li | Link |
| 0.005050505 rd | Rod |
| 0.005050505 pole | Pole |
| 0.01388889 ftm | Fathom |
| 0.25 hand | Hand |
| 0.1111111 span | Span |
| 0.2222222 finger | Finger |
| 0.05555556 cubit | Cubit |
| 0.004166667 rope | Rope |
| 0.01397 ken | Ken |
| 0.000005260943 lea | League |
| 72 pt | Point |
| 0.0000000000001697885 AU | Astronomical Unit |
| 0.000000000000000002684782 ly | Light-year |
| 0.00254 dam | Decametre |
| 0.000254 hm | Hectometre |
| 0.000004571634 nl | Nautical League |
Tips for converting Foot to Inch
- To go from foot to inch, multiply by 12; to go back, divide by 12 (or multiply by 0.08333333).
- For a quick mental estimate, remember that 1 foot ≈ 12 inch, so 10 foot ≈ 120 inch.
- The converter above keeps full precision; the tables round for readability, so use the tool for exact figures.
- Both fields update live as you type — change either side to convert in that direction.
How to use this Foot to Inch converter
Type a number into the Foot field and the equivalent in Inch appears instantly — there is no “convert” button to press and nothing is sent to a server, so it works offline once the page has loaded and is safe for any data. You can also type into the Inch field to convert the other way (inch to foot). Use the swap control to flip the two units, and copy the result with a single click. Because the calculation runs in your browser with full floating-point precision, the converter is more exact than the rounded figures shown in the reference chart above — use the chart for quick look-ups and the tool for precise work.
Accuracy and method
Every figure on this page — the formula, the worked examples, the conversion chart and the “convert to other units” tables — is computed from a single verified conversion factor (1 ft = 12 in), never copied from a hand-typed lookup table that could drift. That factor is derived from each unit’s definition in terms of a common base unit, and an automated check re-verifies all of the site’s factors on every update, so the numbers here stay correct over time. This matters for foot-to-inch conversions because a small rounding error in a published table compounds quickly at larger quantities; computing from the exact factor avoids that.
Sources
- NIST Special Publication 811 — Guide for the Use of the SI — publishes the exact metric equivalents of the customary units. The inch, foot, yard and mile are defined exactly in metres by the 1959 international yard-and-pound agreement, so every imperial figure on this page is exact, not rounded.
- BIPM — The International System of Units (SI Brochure) — the defining document for the SI, published by the International Bureau of Weights and Measures. It fixes the base unit that this conversion resolves to, which is why the factor here can be exact rather than approximate.
The metric units (km, m, cm, mm, µm) are exact by definition, and the imperial units (mile, yard, foot, inch, nautical mile) use their exact international values. Traditional units (hand, span, finger, cubit, rod/pole, link, rope, ken, league) are given at their commonly accepted standard sizes — historical local values sometimes differed, so confirm against a primary source before relying on them for legal or historical work.
Frequently asked questions
- How many inch are in 1 foot?
- 1 foot = 12 inch (in). To convert any number of foot to inch, multiply by 12.
- How do I convert foot to inch?
- Multiply the number of foot by 12. For example, 10 foot = 10 × 12 = 120 inch, and 25 foot = 300 inch.
- How many foot are in 1 inch?
- 1 inch = 0.08333333 foot. So to convert inch back to foot, multiply by 0.08333333.
- What is the formula to convert foot to inch?
- inch = foot × 12. The reverse formula is foot = inch × 0.08333333.
- How much is 100 foot in inch?
- 100 foot = 1,200 inch. (And 1000 foot = 12,000 inch.)
- Which is bigger, a foot or a inch?
- A foot is larger: 1 foot = 12 inch.
- Is this foot to inch converter accurate?
- Yes — every value is computed from the exact 12 in per ft factor (not rounded look-up tables), and the factors are re-verified automatically on every update.
- Can I convert inch to foot too?
- Yes. The converter works both ways — enter a value in either field. 1 inch = 0.08333333 foot.