Convert Inches to Feet Instantly
Use this Inches to Feet converter to change any length from inches into feet with instant results. Enter whole or decimal inches to see decimal feet, feet-and-inches format, yards, centimeters, meters and millimeters, or switch to the reverse calculator when your starting measurement is already in feet.
Convert inches to feet, reverse feet to inches, combine feet and inches, or convert one length across common imperial and metric units.
Enter inches to calculate decimal feet, feet-and-inches notation and related length units.
Decimals are supported, such as 7.5 or 42.25 inches.
Reverse the conversion by multiplying feet by 12.
Combine a measurement written in feet and inches, then see total inches, decimal feet and metric equivalents.
Enter one length and choose its starting unit to convert it into inches, feet, yards, millimeters, centimeters and meters.
The inches to feet conversion is one of the simplest length conversions in the U.S. customary and imperial-style measurement systems because the relationship is fixed: 12 inches equal 1 foot. To convert a measurement in inches to feet, divide the inch value by 12.
This works for whole numbers, fractions and decimals. For example, 18 inches ÷ 12 = 1.5 feet, while 42 inches ÷ 12 = 3.5 feet. If you prefer mixed notation instead of decimal feet, 42 inches can also be written as 3 feet 6 inches.
Example: 30 inches ÷ 12 = 2.5 feet.
Example: 6.5 feet × 12 = 78 inches.
The inch and foot are linearly related. Because one international inch is exactly 2.54 centimeters, twelve inches make exactly 30.48 centimeters, which is 0.3048 meter. This exact relationship is useful when moving between customary and metric measurements.
Use this quick chart for common inch measurements. Decimal feet are useful in calculations, while the feet-and-inches column is often easier to read for height, room dimensions, lumber and everyday measurements.
| Inches | Decimal Feet | Feet & Inches | Centimeters |
|---|---|---|---|
| 1 in | 0.083333 ft | 0 ft 1 in | 2.54 cm |
| 3 in | 0.25 ft | 0 ft 3 in | 7.62 cm |
| 6 in | 0.5 ft | 0 ft 6 in | 15.24 cm |
| 9 in | 0.75 ft | 0 ft 9 in | 22.86 cm |
| 12 in | 1 ft | 1 ft 0 in | 30.48 cm |
| 18 in | 1.5 ft | 1 ft 6 in | 45.72 cm |
| 24 in | 2 ft | 2 ft 0 in | 60.96 cm |
| 30 in | 2.5 ft | 2 ft 6 in | 76.20 cm |
| 36 in | 3 ft | 3 ft 0 in | 91.44 cm |
| 42 in | 3.5 ft | 3 ft 6 in | 106.68 cm |
| 48 in | 4 ft | 4 ft 0 in | 121.92 cm |
| 54 in | 4.5 ft | 4 ft 6 in | 137.16 cm |
| 60 in | 5 ft | 5 ft 0 in | 152.40 cm |
| 66 in | 5.5 ft | 5 ft 6 in | 167.64 cm |
| 72 in | 6 ft | 6 ft 0 in | 182.88 cm |
| 78 in | 6.5 ft | 6 ft 6 in | 198.12 cm |
| 84 in | 7 ft | 7 ft 0 in | 213.36 cm |
| 96 in | 8 ft | 8 ft 0 in | 243.84 cm |
| 120 in | 10 ft | 10 ft 0 in | 304.80 cm |
15 ÷ 12 = 1.25 feet, or 1 ft 3 in.
27 ÷ 12 = 2.25 feet, or 2 ft 3 in.
45 ÷ 12 = 3.75 feet, or 3 ft 9 in.
75 ÷ 12 = 6.25 feet, or 6 ft 3 in.
For any value that is not a multiple of 12, the decimal portion represents a fraction of a foot. Multiply that decimal portion by 12 if you want to turn it back into remaining inches. For example, 2.625 feet contains 2 full feet plus 0.625 × 12 = 7.5 inches.
The modern relationship between the inch and foot is standardized as a fixed ratio: one foot contains twelve inches. This is different from metric length units, which typically scale by powers of ten. For conversion work, the historical origin matters less than the defined relationship because the factor 12 is exact.
The international inch is exactly 0.0254 meter, so the international foot is 12 × 0.0254 = 0.3048 meter exactly. NIST measurement tables list the international foot as exactly 0.3048 meter, providing an authoritative bridge between customary length and SI length.
A foot can be divided into twelve equal one-inch segments. This diagram shows the exact relationship used by the converter.
Converting inches to feet is useful whenever a small measurement is supplied in inches but a larger plan, drawing, estimate or product specification is easier to read in feet. This happens in construction, interior design, woodworking, furniture sizing, home improvement, real estate, manufacturing and everyday height measurements.
For example, a shelf that is 54 inches long is 4.5 feet long. A countertop section measuring 90 inches is 7.5 feet. A 108-inch wall section is 9 feet. Converting to feet can make larger dimensions easier to compare without changing the actual length.
There are two common ways to express an inch measurement after conversion. Decimal feet are convenient for calculations, estimating software and spreadsheets. Feet-and-inches notation is often more familiar on tape measures and job sites.
For example, 39 inches equals 3.25 feet. In mixed notation, that same length is 3 feet 3 inches. Neither format is more accurate by itself; they simply present the same measurement differently. The calculator shows both so you can use the format that fits your task.
You are multiplying dimensions, calculating costs per foot, using spreadsheets, entering CAD data, or performing repeated arithmetic.
You are reading a tape measure, describing a person's height, marking lumber, communicating room dimensions, or working from customary construction drawings.
To write a measurement as whole feet plus remaining inches, first divide by 12 and keep the whole-number part as feet. Then multiply the number of whole feet by 12 and subtract that from the original inches.
Example: 50 inches contains 4 full feet because 4 × 12 = 48. Subtract 48 from 50 and 2 inches remain. Therefore, 50 inches = 4 feet 2 inches, or about 4.166667 decimal feet.
Fractional inches can be converted in exactly the same way once the fraction is expressed numerically. For example, 6½ inches is 6.5 inches. Divide 6.5 by 12 to get approximately 0.541667 feet. A measurement of 18¼ inches is 18.25 inches, which becomes approximately 1.520833 feet.
When precision matters, avoid rounding the inch value before conversion. Keep the original fraction or decimal through the calculation and round only the final displayed result to the number of decimal places appropriate for your project.
The reverse calculation is even more direct. Multiply feet by 12. For example, 2.5 feet × 12 = 30 inches, 4.75 feet × 12 = 57 inches, and 8.25 feet × 12 = 99 inches. This works because every foot contains twelve equal inches.
If the feet value is written as feet plus inches already, convert the feet portion to inches and then add the remaining inches. For example, 5 ft 8 in = (5 × 12) + 8 = 68 inches.
For inches → feet, divide by 12. Multiply by 12 only for feet → inches.
3.5 ft means 3 ft 6 in, not 3 ft 5 in.
The foot is not decimal. One foot contains 12 inches.
Square inches to square feet uses 144, not 12.
Construction measurements frequently mix feet and inches. Stud spacing, cabinet dimensions, trim lengths, openings, lumber sizes and fixture clearances may be written in inches even when the overall project is planned in feet. A reliable converter makes it easier to compare those measurements or enter them into estimating software.
Suppose a wall opening is 102 inches wide. Dividing by 12 gives 8.5 feet, or 8 ft 6 in. If flooring is priced or planned by linear foot, the decimal form may be useful. If you are marking the opening on site, the mixed feet-and-inches form may be more practical.
Human height and furniture dimensions are often stated in inches in product specifications but spoken as feet and inches. A 70-inch height is 5 ft 10 in, while a 76-inch item is 6 ft 4 in. Knowing both forms makes it easier to compare clearances, door heights, bed frames, desks, shelving and storage systems.
Remember that decimal feet and mixed notation are not written the same way. A height of 5.8 feet is not 5 ft 8 in. The 0.8 foot portion equals 9.6 inches, so 5.8 feet equals 5 ft 9.6 in.
Inches and feet are part of a linked customary length system. Twelve inches make one foot and three feet make one yard, so one yard contains 36 inches. Metric units follow a different scale: one international inch equals exactly 25.4 millimeters or 2.54 centimeters, and one international foot equals exactly 0.3048 meter.
When your project mixes systems, use the multi-unit converter above or related tools such as Inches to Centimeters, Inches to Millimeters, Yards to Feet, and Yards to Inches.
A common error is to assume that because 12 inches equal 1 foot, 12 square inches must equal 1 square foot. Area scales in two dimensions, so the correct relationship is 1 square foot = 12 × 12 = 144 square inches. Likewise, volume scales in three dimensions, so one cubic foot contains 12³ = 1,728 cubic inches.
This page is designed for linear length only. For area or volume, use the correct square-unit or cubic-unit converter instead of the inches-to-feet formula.
Because 12 does not divide evenly into every whole number of inches, many conversions produce repeating decimals. For example, 1 inch is 0.083333… foot and 10 inches is 0.833333… foot. The underlying relationship is exact; the displayed decimal may be rounded.
For general use, three to six decimal places are usually enough. For construction or fabrication, it may be clearer to keep the result as feet and inches rather than a long decimal. For calculations, keep additional decimals until the final step to reduce cumulative rounding error.
Continue with related converters including Feet to Inches, Yards to Inches, Yards to Feet, Yards to Meters, Inches to Centimeters, Inches to Millimeters, Centimeters to Feet and Centimeters to Meters. These internal conversion tools help when drawings, product specifications and measurements use different length units.
For official measurement references, see the NIST Handbook 44 Appendix C measurement tables, which list the international foot as 12 × 0.0254 meter = 0.3048 meter exactly. For the SI definition of the metre, see the BIPM SI base unit: metre reference.
Quick answers about inch, foot, mixed measurement and metric conversions.