Inch Converter
Unit ConversionConvert inches to feet, yards, miles, meters, centimeters, millimeters, and kilometers. Type any value into any field and every other unit updates instantly.
Inch
Metric
Imperial / US
1 Inch = 2.54 Centimeters ⟷ 1 Centimeter = 0.393701 Inches
1 Inch = 25.4 Millimeters ⟷ 1 Millimeter = 0.0393701 Inches
1 Inch = 0.0254 Meters ⟷ 1 Meter = 39.370079 Inches
1 Inch = 0.0000254 Kilometers ⟷ 1 Kilometer = 39,370.07874 Inches
1 Inch = 0.0833333 Feet ⟷ 1 Foot = 12 Inches
1 Inch = 0.0277778 Yards ⟷ 1 Yard = 36 Inches
1 Inch = 0.0000157828 Miles ⟷ 1 Mile = 63,360 Inches
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Unit Conversion calculators
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SponsoredThis inch converter shows a length in inches next to centimeters, millimeters, meters, kilometers, feet, yards and miles. Type into any box and the others update as you type.
The inch (in) is the US unit for screens, tools, paper, clothing and anything measured with a ruler or tape. Since July 1, 1959 an inch has been exactly 2.54 centimeters, so every conversion here is exact.
Inches can be typed as decimals or fractions: 2.5, 5/8 and 2 3/8 all work, and the chart below lists every sixteenth of an inch as a decimal. Lengths cannot be negative, so a negative entry clears the other boxes.
Inch Conversion Chart
Common lengths in inches converted to centimeters, millimeters, feet and meters, rounded to four decimal places.
| Inches | Centimeters | Millimeters | Feet | Meters |
|---|---|---|---|---|
| 0.5 in | 1.27 cm | 12.7 mm | 0.0417 ft | 0.0127 m |
| 1 in | 2.54 cm | 25.4 mm | 0.0833 ft | 0.0254 m |
| 2 in | 5.08 cm | 50.8 mm | 0.1667 ft | 0.0508 m |
| 3 in | 7.62 cm | 76.2 mm | 0.25 ft | 0.0762 m |
| 4 in | 10.16 cm | 101.6 mm | 0.3333 ft | 0.1016 m |
| 5 in | 12.7 cm | 127 mm | 0.4167 ft | 0.127 m |
| 6 in | 15.24 cm | 152.4 mm | 0.5 ft | 0.1524 m |
| 10 in | 25.4 cm | 254 mm | 0.8333 ft | 0.254 m |
| 12 in | 30.48 cm | 304.8 mm | 1 ft | 0.3048 m |
| 24 in | 60.96 cm | 609.6 mm | 2 ft | 0.6096 m |
| 36 in | 91.44 cm | 914.4 mm | 3 ft | 0.9144 m |
| 100 in | 254 cm | 2,540 mm | 8.3333 ft | 2.54 m |
How Many Centimeters in an Inch
There are exactly 2.54 centimeters in an inch. The 1959 agreement described by NIST fixed the inch at exactly 25.4 millimeters, which is 2.54 cm. Multiply inches by 2.54 to get centimeters, or divide centimeters by 2.54 to get inches.
Reading Inch Fractions on a Ruler
A US ruler divides each inch in halves, quarters, eighths and sixteenths. The longest mark between two numbers is 1/2 inch, the next longest are the quarters, then the eighths, and the shortest are the sixteenths. Counting the sixteenth marks from the last whole inch gives the fraction.
Inch Fraction Chart
Fractions of an inch in sixteenths, with their decimal value and length in centimeters. All values are exact.
| Fraction | Decimal Inches | Centimeters |
|---|---|---|
| 1/16 in | 0.0625 in | 0.15875 cm |
| 1/8 in | 0.125 in | 0.3175 cm |
| 3/16 in | 0.1875 in | 0.47625 cm |
| 1/4 in | 0.25 in | 0.635 cm |
| 5/16 in | 0.3125 in | 0.79375 cm |
| 3/8 in | 0.375 in | 0.9525 cm |
| 7/16 in | 0.4375 in | 1.11125 cm |
| 1/2 in | 0.5 in | 1.27 cm |
| 9/16 in | 0.5625 in | 1.42875 cm |
| 5/8 in | 0.625 in | 1.5875 cm |
| 11/16 in | 0.6875 in | 1.74625 cm |
| 3/4 in | 0.75 in | 1.905 cm |
| 13/16 in | 0.8125 in | 2.06375 cm |
| 7/8 in | 0.875 in | 2.2225 cm |
| 15/16 in | 0.9375 in | 2.38125 cm |
To turn a decimal measurement into the nearest fraction, the Decimal Inches to Fraction Converter rounds to sixteenths or finer. Screen and print sizes in pixels convert with the Pixels to Inches Converter, and very thin materials measured in thousandths of an inch use the Mils to Inches Converter.
Inches to Other Units
Single conversions from inches to one other unit, one page per pair.
- Inches to Centimeters Converter: 1 inch equals exactly 2.54 centimeters
- Inches to Meters Converter: 1 meter equals about 39.370079 inches
- Inches to Yards Converter: 1 yard equals 36 inches
- Feet to Inches Converter: 1 foot equals 12 inches
- Millimeters to Inches Converter: 1 inch equals exactly 25.4 millimeters
Other Length Converters
Each converter below shows one length in every common unit at once, starting from a different unit.
- Kilometer Converter: kilometers to miles, meters and nautical miles
- Centimeter Converter: centimeters to inches, feet and millimeters
- Millimeter Converter: millimeters to inches and micrometers, with a fraction chart
- Mile Converter: miles to kilometers, feet, yards and nautical miles
- Feet Converter: feet to inches, meters and centimeters
- Meter Converter: meters to feet, inches and centimeters, with metric prefixes
- Yard Converter: yards to feet, meters and miles
- Distance Converter: travel and race distances in miles and kilometers
- Height Converter: heights in feet and inches, centimeters and meters
- Length Converter: pick any common length unit and convert it
Frequently Asked Questions
How many inches are in a foot?
There are exactly 12 inches in a foot and 36 inches in a yard.
How many mm are in an inch?
An inch is exactly 25.4 millimeters, because it is 2.54 centimeters and each centimeter is 10 millimeters.
What is the symbol for inches?
Inches are written as in, or with a double prime ("), so 5 inches can be written 5 in or 5".
How do I enter a fraction of an inch?
Type it as a fraction, such as 3/8 or 2 3/8 with a space before the fraction, or as a decimal such as 0.375. The fraction chart above lists every sixteenth.
Can I type into a box other than inches?
Yes. Every box is an input. Type centimeters or feet and the inches box and the others update.
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