CM to Inches Converter
Convert between centimeters and inches, with fractions.
Enter a number of 0 or more.
1 in = 2.54 cm exactly, so 1 cm ≈ 0.3937 in
CM to inches chart
| cm | in |
|---|---|
| 1 | 0.3937 |
| 2 | 0.7874 |
| 3 | 1.1811 |
| 5 | 1.9685 |
| 10 | 3.937 |
| 15 | 5.9055 |
| 20 | 7.874 |
| 25 | 9.8425 |
| 30 | 11.811 |
| 50 | 19.685 |
| 100 | 39.3701 |
| 150 | 59.0551 |
| 160 | 62.9921 |
| 170 | 66.9291 |
| 180 | 70.8661 |
| in | cm |
|---|---|
| 1 | 2.54 |
| 2 | 5.08 |
| 3 | 7.62 |
| 4 | 10.16 |
| 5 | 12.7 |
| 6 | 15.24 |
| 8 | 20.32 |
| 10 | 25.4 |
| 12 | 30.48 |
| 24 | 60.96 |
| 28 | 71.12 |
| 30 | 76.2 |
| 32 | 81.28 |
| 36 | 91.44 |
| 55 | 139.7 |
| 65 | 165.1 |
CM to Inches Converter
This converter switches between centimeters and inches as you type. It also shows the nearest 1/16 inch, the way a tape measure is marked, and feet and inches for heights.
inches = cm ÷ 2.54
cm = inches × 2.54
How to use
- Type the value you know into the cm or inches box. The other box updates right away.
- Click a common length to fill it in.
- Click the copy button on the right to take a value with you.
Key terms
Inch
Since 1959 one inch has been defined as exactly 2.54 cm, so this conversion is exact, not an estimate. Twelve inches make one foot.
Reading fractions of an inch
US tape measures mark inches in halves, quarters, eighths, and sixteenths. The nearest 1/16 inch result rounds to those marks and reduces the fraction.
| Fraction | Decimal inches | Millimeters |
|---|---|---|
| 1/16 in | 0.0625 in | 1.5875 mm |
| 1/8 in | 0.125 in | 3.175 mm |
| 1/4 in | 0.25 in | 6.35 mm |
| 1/2 in | 0.5 in | 12.7 mm |
FAQ
How many inches is 1 cm?
About 0.3937 inches. One inch is exactly 2.54 cm.
How tall is 170 cm in feet and inches?
About 5 ft 6.93 in. 170 ÷ 2.54 = 66.93 inches.
What is 5 ft 7 in in cm?
170.18 cm. 5 ft 7 in is 67 inches, and 67 × 2.54 = 170.18.
Are my numbers saved?
No. Nothing is saved or sent to a server. All conversions happen in this browser.