Formula
cm to in conversion formula
Use this relationship for a direct conversion:
Worked example
2 cm = 0.7874015748 in.
Metric factors and international inch, foot, yard, mile, and nautical mile definitions are exact.
Length conversion
1 centimeter (cm) equals 0.393700787402 inch (in). Enter any value below to convert from cm to in.
Enter a value and choose units. Results update instantly.
1 cm = 0.3937007874 in
| Unit | Value |
|---|---|
| Meter m | 0.01 |
| Kilometer km | 0.00001 |
| Centimeter cm | 1 |
| Millimeter mm | 10 |
| Micrometer μm | 10,000 |
| Nanometer nm | 10,000,000 |
| Inch in | 0.3937007874 |
| Foot ft | 0.032808399 |
| Yard yd | 0.010936133 |
| Mile mi | 0.0000062137 |
| Nautical mile nmi | 0.0000053996 |
| Light-year ly | 1.057000834e-18 |
Formula
Use this relationship for a direct conversion:
2 cm = 0.7874015748 in.
Metric factors and international inch, foot, yard, mile, and nautical mile definitions are exact.
Quick reference
| Centimeter (cm) | Inch (in) |
|---|---|
| 0.01 | 0.0039370079 |
| 0.1 | 0.0393700787 |
| 1 | 0.3937007874 |
| 2 | 0.7874015748 |
| 5 | 1.968503937 |
| 10 | 3.937007874 |
| 25 | 9.842519685 |
| 50 | 19.6850393701 |
| 100 | 39.3700787402 |
| 1,000 | 393.7007874016 |
From unit
One hundredth of a meter.
Symbol: cm
To unit
Exactly 25.4 millimeters by international agreement.
Symbol: in
Keep converting
Source
Definitions are checked against NIST SP 811: Guide for the Use of the SI. Calculations use full internal precision before display rounding.
View the complete length converterQuestions
Use the formula in = cm x 0.393700787402. 1 centimeter (cm) equals 0.393700787402 inch (in).
Both unit definitions use exact factors. Only the displayed decimal may be rounded.