Centimeters to Inches Converter
Convert centimeters to inches instantly with this free centimeters to inches converter. Enter any value to get an accurate length conversion, plus the formula, the conversion factor and a full reference table.
What is 1 centimeter in inches?
1 centimeter is equal to 0.393700787 inches.
1 ÷ 2.54 = 0.393700787 inches
1 centimeter = 0.3937007874 inches
Centimeters to Inches formula
in = cm ÷ 2.54
The centimeters to inches conversion factor is 0.393700787402, which is exact by definition. 1 centimeter = 0.393700787402 inches, and 1 inch = 2.54 centimeters.
Worked examples
- 2 centimeters = 0.787401575 inches — 2 ÷ 2.54 = 0.787401575 inches
- 6 centimeters = 2.36220472 inches — 6 ÷ 2.54 = 2.36220472 inches
- 10 centimeters = 3.93700787 inches — 10 ÷ 2.54 = 3.93700787 inches
Centimeters to Inches conversion table
Every value below is calculated with the exact conversion factor and rounded for display.
| Centimeters (cm) | Inches (in) |
|---|---|
| 1 cm | 0.39370079 in |
| 2 cm | 0.78740157 in |
| 3 cm | 1.1811024 in |
| 4 cm | 1.5748031 in |
| 5 cm | 1.9685039 in |
| 6 cm | 2.3622047 in |
| 7 cm | 2.7559055 in |
| 8 cm | 3.1496063 in |
| 9 cm | 3.5433071 in |
| 10 cm | 3.9370079 in |
| 12 cm | 4.7244094 in |
| 15 cm | 5.9055118 in |
| 20 cm | 7.8740157 in |
| 25 cm | 9.8425197 in |
| 30 cm | 11.811024 in |
| 50 cm | 19.685039 in |
| 75 cm | 29.527559 in |
| 100 cm | 39.370079 in |
| 500 cm | 196.85039 in |
| 1,000 cm | 393.70079 in |
When you need to convert centimeters to inches
- Buying furniture, TVs or appliances listed in one system and fitting them into a room measured in the other.
- Following building plans, sewing patterns or DIY instructions written abroad.
- Reading height, screen size or luggage limits when travelling between the US and the rest of the world.
Getting a feel for the scale
A converted number is easier to trust when you can picture it. These reference points let you sanity-check the result at a glance.
Centimeter (cm)
- A standard pencil is about 19 cm long
- A US letter page is 21.6 cm wide
Inch (in)
- A US quarter is about 1 inch across
- Standard printer paper is 8.5 inches wide
Mental shortcut
Divide by 2.5. 100 cm → 40 inches (exact 39.37).
Common mistakes to avoid
- Dividing when you should multiply. Because 1 centimeter = 0.393701 inches, the answer should be smaller than the number you started with.
- Rounding too early. Convert first at full precision, then round the final answer to the precision the task actually needs.
How precise does the answer need to be?
For everyday measurements round to the nearest whole unit or to one decimal place. Machining, sewing and construction usually need at least two decimals — and it is worth measuring in the target unit directly when tolerance matters.
How these units are defined
- Centimeter (cm): One hundredth of a meter, widely used for body and object measurements. This unit's relationship to the SI base unit is exact by definition, so no rounding enters the conversion factor.
- Inch (in): Exactly 25.4 millimeters; the base small unit of US customary and Imperial length. This unit's relationship to the SI base unit is exact by definition, so no rounding enters the conversion factor.
Related conversions
Frequently asked questions
- What is 1 centimeter in inches?
- 1 centimeter is equal to 0.393700787 inches.
- How many centimeters are in one inch?
- There are 2.54 centimeters in 1 inch.
- How do you convert centimeters to inches?
- Multiply the number of centimeters by 0.393700787 — or use the formula in = cm ÷ 2.54.
- What is 6 centimeters in inches?
- 6 centimeters is 2.36220472 inches. 6 ÷ 2.54 = 2.36220472 inches.
- Is the centimeters to inches conversion exact?
- Yes. The relationship is fixed by definition, so 0.393700787402 is an exact conversion factor — only the displayed result is rounded.