Centimeter to Inch Converter
Length · unit-converter
Convert Centimeter to Inch with a fixed input and output unit, step-by-step formula line, and reference tables. All calculations use SI-based definitions (international yard, nautical mile, etc.).
Calculator
From: Centimeter (cm)
To: Inch (in)
About Centimeter
The centimeter is a metric unit equal to one hundredth of a meter (0.01 m). It is convenient for everyday objects, paper sizes, and body measurements.
About Inch
The inch is an imperial and US customary unit equal to exactly 0.0254 meters. Twelve inches equal one feet; it is used for screen sizes, tools, and fine measurements.
How to convert centimeters to inches
1 centimeter is equal to 0.39370078740157 inch:
1 cm = (0.01 m ÷ 0.0254 m) in = 0.39370078740157 in
1 centimeter = 1/2.54 inch (international inch: 1 in = 2.54 cm).
Each centimeter is defined as 0.01 m and each inch as 0.0254 m, so one cm equals 0.01 ÷ 0.0254 in = 0.39370078740157 in.
Let d(cm) be the numeric value of the same length measured in Centimeter (cm), and d(in) the value in Inch (in). Then:
d(in) = d(cm) × (0.01 / 0.0254)
Equivalently, divide by how many cm fit into one in (meters per in divided by meters per cm):
d(in) = d(cm) ÷ 2.54
Or: inch = centimeter ÷ 2.54
Examples
Example #1: Convert 20 cm to inch
20 cm = 20 cm × (0.01/0.0254) in = 7.874015748 in
20 cm = 20 cm ÷ 2.54 = 7.874015748 in
Example #2: Convert 50 cm to inch
50 cm = 50 cm × (0.01/0.0254) in = 19.6850393701 in
50 cm = 50 cm ÷ 2.54 = 19.6850393701 in
Summary
To convert Centimeter to Inch, multiply the value in cm by the ratio of meters per cm divided by meters per in. Equivalently: value_in = value_cm × (0.01 / 0.0254). Numerically, 1 cm equals 0.3937007874015748 in.
Relationship context
You are converting between metric (SI) (Centimeters) and US customary / imperial (Inches). Metric units are decimal; imperial units use inches, feet, yards, and miles tied to the international yard definition. Nautical miles are defined in meters (1 nmi = 1,852 m). This tool uses SI-based factors so results stay consistent with modern standards.
Conversion tables
| Centimeter (cm) | Inch (in) |
|---|---|
| 0.1 | 0.0393700787 |
| 1 | 0.3937007874 |
| 2 | 0.7874015748 |
| 3 | 1.1811023622 |
| 4 | 1.5748031496 |
| 5 | 1.968503937 |
| 6 | 2.3622047244 |
| 7 | 2.7559055118 |
| 8 | 3.1496062992 |
| 9 | 3.5433070866 |
| Centimeter (cm) | Inch (in) |
|---|---|
| 10 | 3.937007874 |
| 20 | 7.874015748 |
| 30 | 11.811023622 |
| 40 | 15.7480314961 |
| 50 | 19.6850393701 |
| 60 | 23.6220472441 |
| 70 | 27.5590551181 |
| 80 | 31.4960629921 |
| 90 | 35.4330708661 |
| 100 | 39.3700787402 |
Conversions outside the hub list
The grid on the category page lists hub units only. These pairs include at least one unit outside that hub set (same tools: formulas and tables on each page).
- cm to nmiCentimeter to Nautical Mile
- cm to chainCentimeter to Chain
- cm to fathomCentimeter to Fathom
- cm to umCentimeter to Micrometer
- cm to nmCentimeter to Nanometer
- cm to angstromCentimeter to Angstrom
- cm to pmCentimeter to Picometer
- nmi to inchNautical Mile to Inch
- chain to inchChain to Inch
- fathom to inchFathom to Inch
- um to inchMicrometer to Inch
- nm to inchNanometer to Inch