Lumber and material orders
Timber is sold in whole feet but cut to inch precision. Converting a 152-inch cut list into feet tells you how many 8-, 10- or 12-foot boards to buy, and how much offcut you will have.
Length
Convert inches to feet
1 inch equals 0.083333333 feet. Enter a value below to convert instantly.
Inches to feet is how a long run of small measurements becomes a number you can quote. It is also where the decimal-versus-compound trap lives: the answer to 100 inches is 8.333 feet, but nobody writes a height or a lumber length that way — they write 8 feet 4 inches.
1 in
0.083333333 ft
Multiply the number of inches by 0.0833333333333 to get feet. How this is calculated
Need the other direction? Convert foot to inch →
Formula
Multiply the number of inches by 0.0833333333333 to get feet.
Step by step
- Start with 1 in.
- Multiply by the conversion factor 0.0833333333333.
- 1 × 0.0833333333333 = 0.083333333 ft.
Inches to Feet conversion table
| Inches (in) | Feet (ft) |
|---|---|
| 1 | 0.083333333 |
| 2 | 0.16666667 |
| 3 | 0.25 |
| 5 | 0.41666667 |
| 10 | 0.83333333 |
| 20 | 1.6666667 |
| 50 | 4.1666667 |
| 100 | 8.3333333 |
| 500 | 41.666667 |
| 1,000 | 83.333333 |
Where inches and feet are used together
Area and volume calculations
Square footage needs both dimensions in the same unit. A room 10 ft 6 in by 12 ft 3 in has to become 10.5 ft by 12.25 ft before you multiply — mixing feet and inches into the multiplication is one of the most common estimating errors there is.
Heights on forms
Some systems store height as total inches (a 5 ft 9 in person is 69 inches) because it avoids storing two fields. Converting in and out of that representation is routine in medical and sports databases.
Surveying and civil drawings
US civil engineering uses decimal feet — a station is 100.00 ft, not 100 ft 0 in — while architectural drawings on the same project use feet and inches. Converting between the two conventions is a daily task on those jobs.
Everyday inches worth knowing
Values people actually look up, with the reason each one comes up. Every figure is calculated with the same engine as the converter above.
| Inch (in) | Foot (ft) | What it is |
|---|---|---|
| 12 | 1 | One foot |
| 24 | 2 | Two feet |
| 36 | 3 | One yard |
| 48 | 4 | A plywood sheet's short side |
| 69 | 5.75 | A height of 5 ft 9 in |
| 72 | 6 | Six feet |
| 96 | 8 | A plywood sheet's long side |
| 120 | 10 | Ten feet |
How these two units are defined
A foot is exactly 12 inches; both are defined against the metre (0.3048 m and 0.0254 m respectively). The relationship has been fixed for centuries, so unlike cross-system conversions there is no history of competing definitions to worry about. What varies is presentation: engineering and construction in the US use decimal feet, while carpentry and everyday speech use feet-and-inches with binary fractions.
Rounding and precision
Multiplying by 12 is exact, so nothing is lost going from feet to inches. Going the other way, thirds recur: 4 inches is exactly 1/3 foot, which is 0.333… in decimal feet. Carrying 0.33 through a long calculation drifts; carry the fraction or extra digits and round only at the end. For carpentry, express the remainder as inches and sixteenths rather than as a decimal at all.
Mistakes people make with this conversion
-
Multiplying feet-and-inches directly
10 ft 6 in × 12 ft 3 in is not 10.6 × 12.3. The inches must become a decimal fraction of a foot first — 6 in is 0.5 ft, not 0.6 ft.
-
Reading decimal feet as feet and inches
8.4 feet is 8 feet 4.8 inches, not 8 feet 4 inches. The two conventions look alike and are 0.8 inches apart here.
-
Losing the remainder on a cut list
Rounding each piece to the nearest foot before summing can under-order material by a full board across a long list. Sum in inches, convert once.
Read more about these units
Sources for this page
Content on this page last reviewed 12 August 2026. Spotted an error? Report it — see also how these values are calculated.
Convert Inch to other length units
1 in expressed in every other length unit on this site.
- Meter m 0.0254
- Kilometer km 0.0000254
- Hectometer hm 0.000254
- Dekameter dam 0.00254
- Decimeter dm 0.254
- Centimeter cm 2.54
- Millimeter mm 25.4
- Micrometer µm 25,400
- Nanometer nm 25,400,000
- Picometer pm 25,400,000,000
- Femtometer fm 25,400,000,000,000
- Attometer am 2.54e+16
- Megameter Mm 2.54e-8
- Gigameter Gm 2.54e-11
- Terameter Tm 2.54e-14
- Petameter Pm 2.54e-17
- Exameter Em 2.54e-20
- Angstrom Å 254,000,000
- Mile mi 0.000015782828
- Yard yd 0.027777778
- Foot ft 0.083333333
- Inch in 1
- Kiloyard kyd 0.000027777778
- League lea 0.0000052609428
- Furlong fur 0.00012626263
- Chain ch 0.0012626263
- Rod rd 0.0050505051
- Perch perch 0.0050505051
- Pole pole 0.0050505051
- Rope rope 0.0041666667
- Fathom fath 0.013888889
- Link li 0.12626263
- Hand hand 0.25
- Ell ell 0.022222222
- Barleycorn barleycorn 3
- Mil mil 1,000
- Microinch µin 1,000,000
- Caliber cl 100
- Centiinch cin 100
- Nautical Mile nmi 0.000013714903
- Nautical Mile (UK) NM (UK) 0.00001370614
- Nautical League nl 0.0000045716343
- Nautical League (UK) nl (UK) 0.0000045687135
- Mile (US survey) mi (US) 0.000015782797
- Furlong (US survey) fur (US) 0.00012626237
- Chain (US survey) ch (US) 0.0012626237
- Rod (US survey) rd (US) 0.0050504949
- Fathom (US survey) fath (US) 0.013888861
- Foot (US survey) ft (US) 0.083333167
- Link (US survey) li (US) 0.12626237
- Inch (US survey) in (US) 0.999998
- League (statute) st.league 0.0000052609322
- Pica pica 6
- Point pt 72
- Twip twip 1,440
- Light Year ly 2.6847821e-18
- Astronomical Unit AU 1.6978851e-13
- Parsec pc 8.2315794e-19
- Kiloparsec kpc 8.2315794e-22
- Megaparsec Mpc 8.2315794e-25
- Earth's Equatorial Radius R⊕(eq) 3.9823541e-9
- Earth's Polar Radius R⊕(pol) 3.9957511e-9
- Earth's Distance from Sun d⊕☉ 1.697861e-13
- Sun's Radius R☉ 3.650999e-11
- Bohr Radius a₀ 479,990,440
- Electron Radius (classical) rₑ 9,013,675,600,000
- Fermi F 25,400,000,000,000
- X-unit X 253,472,780,000
- Planck Length ℓP 1.5715342e+33
- Mile (Roman) mi (Rom) 0.000017164435
- Roman Actus actus 0.00071592211
- Arpent arpent 0.00043402778
- Cubit (UK) cubit 0.055555556
- Cubit (Greek) cubit (Gk) 0.054884742
- Long Cubit long cubit 0.047619048
- Reed reed 0.0092592593
- Long Reed long reed 0.0079365079
- Span (cloth) span 0.11111111
- Finger (cloth) finger 0.22222222
- Nail (cloth) nail 0.44444444
- Handbreadth handbreadth 0.33333333
- Fingerbreadth fingerbreadth 1.3333333
- Aln aln 0.042776946
- Famn famn 0.014258982
- Ken ken 0.011990408
- Russian Archin archin 0.035714286
- Vara Castellana vara (cast) 0.030413625
- Vara Conuquera vara (con) 0.010137875
- Vara de Tarea vara (tarea) 0.010137875
- Ja (Korean foot) 자 0.08382
- Chi 치 0.8382
- Pun 푼 8.382
- Gan 간 0.01397
- Jang 장 0.008382
- Ri (Korean) 리 0.000064675926
About the inch
The inch (in) is a Imperial unit of length. Defined internationally as exactly 25.4 millimeters since 1959.
About the foot
The foot (ft) is a Imperial unit of length.
Related conversions
Frequently asked questions
What is 100 inches in feet?
100 inches is 8.3333 feet, which is 8 feet 4 inches. The recurring decimal comes from 4 inches being exactly one third of a foot.
How do I turn decimal feet into feet and inches?
Keep the whole number as feet and multiply the decimal part by 12. 7.75 ft is 7 feet and 0.75 × 12 = 9 inches, so 7 ft 9 in.
Why do US drawings sometimes use decimal feet?
Civil and survey work uses decimal feet because it multiplies and adds cleanly for areas, volumes and coordinates. Architectural and carpentry drawings keep feet-and-inches because that is how material is cut and measured on site.
How many feet are in a inch?
One inch equals 0.083333333 feet.
How do you convert inches to feet?
Multiply the number of inches by 0.0833333333333 to get feet.
What is 1 foot in inches?
One foot equals 12 inches.
When would I convert inches to feet?
This conversion is common when measuring height, screen sizes, travel distances, fabric, and construction dimensions.