Unit conversion / TOOL
Inches to Cm Converter: Inches to Centimeters.
Convert inches to centimeters, and feet and inches to cm.
To convert inches to cm, multiply by 2.54: 12 in is 30.48 cm and 6 ft is 182.88 cm. Enter inches below to see centimeters, or swap the units. The charts under the converter cover fractions of an inch, feet and heights in feet and inches.
Updated
INTERACTIVE TOOL
Your result
1 in = 2.54 cm
Common conversions
QUICK ANSWER
To convert inches to centimeters, multiply by 2.54. So 1 in = 2.54 cm, 12 in = 30.48 cm and 36 in = 91.44 cm. For a height, first turn feet into inches (feet × 12 + inches): 5 ft 7 in is 67 in, which is 170.18 cm, and 6 ft is 72 in, or 182.88 cm.
THE METHOD
How it works
Convert the source measurement to meters, then divide by the target unit’s value in meters. Exact definitions include 1 inch = 0.0254 meters and 1 mile = 1,609.344 meters.
PUT IT TO USE
Example calculation
10 in = 25.4 cm. Change the amount or swap the units above to calculate your own value.
QUICK REFERENCE
Conversion tables
| in | cm |
|---|---|
| 0.25 in | 0.64 cm |
| 0.5 in | 1.27 cm |
| 1 in | 2.54 cm |
| 2 in | 5.08 cm |
| 3 in | 7.62 cm |
| 4 in | 10.16 cm |
| 5 in | 12.7 cm |
| 6 in | 15.24 cm |
| 7 in | 17.78 cm |
| 8 in | 20.32 cm |
| 9 in | 22.86 cm |
| 10 in | 25.4 cm |
| 11 in | 27.94 cm |
| 12 in | 30.48 cm |
| 14 in | 35.56 cm |
| 15 in | 38.1 cm |
| 16 in | 40.64 cm |
| 18 in | 45.72 cm |
| 20 in | 50.8 cm |
| 24 in | 60.96 cm |
| 30 in | 76.2 cm |
| 32 in | 81.28 cm |
| 36 in | 91.44 cm |
| 40 in | 101.6 cm |
| 48 in | 121.92 cm |
| 50 in | 127 cm |
| 60 in | 152.4 cm |
| ft | cm |
|---|---|
| 1 ft | 30.48 cm |
| 2 ft | 60.96 cm |
| 3 ft | 91.44 cm |
| 4 ft | 121.92 cm |
| 5 ft | 152.4 cm |
| 6 ft | 182.88 cm |
| 7 ft | 213.36 cm |
| 8 ft | 243.84 cm |
| 10 ft | 304.8 cm |
QUICK REFERENCE
Height in feet and inches to cm
| Feet and inches | Centimeters |
|---|---|
| 4 ft 10 in | 147.3 cm |
| 5 ft 0 in | 152.4 cm |
| 5 ft 2 in | 157.5 cm |
| 5 ft 4 in | 162.6 cm |
| 5 ft 5 in | 165.1 cm |
| 5 ft 6 in | 167.6 cm |
| 5 ft 7 in | 170.2 cm |
| 5 ft 8 in | 172.7 cm |
| 5 ft 9 in | 175.3 cm |
| 5 ft 10 in | 177.8 cm |
| 5 ft 11 in | 180.3 cm |
| 6 ft 0 in | 182.9 cm |
| 6 ft 1 in | 185.4 cm |
| 6 ft 2 in | 188.0 cm |
| 6 ft 4 in | 193.0 cm |
How to convert inches to centimeters
Multiply the inches by 2.54. The factor is exact: an international agreement in 1959 fixed the inch at 25.4 millimeters. Example: 27 in × 2.54 = 68.58 cm.
Fractions of an inch
US tape measures are marked in halves, quarters, eighths and sixteenths. Turn the fraction into a decimal first: 1/2 in = 1.27 cm, 1/4 in = 0.635 cm, 1/8 in = 3.175 mm and 1/16 in = 1.5875 mm. So 3 3/4 in is 3.75 × 2.54 = 9.525 cm.
Feet and inches to centimeters
Multiply the feet by 12, add the inches and multiply by 2.54. 5 ft 4 in is 64 in × 2.54 = 162.56 cm; 5 ft 10 in is 70 in × 2.54 = 177.8 cm. For the reverse, see cm to inches; for longer distances, miles to km.
In short
How to use the Inches to Cm Converter
- Type the amount, for example 10 in.
- Pick the unit you want, for example cm.
- Use the swap button to convert the other way, and the decimal places setting to round the answer.
- Read the result. It updates as you type, so you can change any value and compare.
Quick reference
cm to in
| cm | in |
|---|---|
| 0.5 cm | 0.19685 in |
| 1 cm | 0.393701 in |
| 2 cm | 0.787402 in |
| 5 cm | 1.968504 in |
| 10 cm | 3.937008 in |
| 25 cm | 9.84252 in |
| 50 cm | 19.685039 in |
| 100 cm | 39.370079 in |
| 250 cm | 98.425197 in |
| 1,000 cm | 393.700787 in |
Accuracy
How we checked this
We compared 4 results from this calculator with values we worked out independently, using exact decimal arithmetic and the published definitions, on October 26, 2026. 4 of 4 matched to the precision shown.
| Input | Independent value | This page | Match |
|---|---|---|---|
| 12 in → cm | 30.48 | 30.48 | Yes |
| 67 in → cm | 170.18 | 170.18 | Yes |
| 1 ft → cm | 30.48 | 30.48 | Yes |
| 100 cm → in | 39.370079 | 39.370079 | Yes |
From the source
The meter was once defined by a physical artifact - two marks inscribed on a platinum-iridium bar, like these from the NIST Museum.
Sources
GOOD TO KNOW
Frequently asked questions
How many cm is 12 inches?
12 inches (1 foot) is 30.48 cm.
What is 5 ft 7 in in cm?
5 ft 7 in is 67 inches, which is 170.18 cm.
What is 6 feet in cm?
6 feet is 72 inches, which is 182.88 cm.
How many cm is 1/2 inch?
Half an inch is 1.27 cm.
How is this conversion calculated?
Convert the source measurement to meters, then divide by the target unit’s value in meters. Exact definitions include 1 inch = 0.0254 meters and 1 mile = 1,609.344 meters.
Can I reverse the conversion?
Yes. Select the swap button between the fields to reverse the source and destination units instantly.
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