cm to inches
Convert cm to inches. Enter a value and view the calculation method, examples and conversion table.
Length converter
cm to inches formula
The calculator converts the input to the category's reference unit, then divides by the target unit's factor.
Result = input × source factor ÷ target factor
1 × (0.01 ÷ 0.0254) ≈ 0.393701
Worked example: 1 Centimetres ≈ 0.393701 Inches
Auto mode preserves significant digits for small values; manual mode rounds to the selected decimal places. ≈ means approximate; < means below the display limit. Extreme values use × 10ⁿ. Calculations are rounded only for display.
cm to inches conversion table
| Centimetres | Inches |
|---|---|
| 1 Centimetres | ≈ 0.393701 Inches |
| 2 Centimetres | ≈ 0.787402 Inches |
| 5 Centimetres | ≈ 1.968504 Inches |
| 10 Centimetres | ≈ 3.937008 Inches |
| 20 Centimetres | ≈ 7.874016 Inches |
| 50 Centimetres | ≈ 19.685039 Inches |
| 100 Centimetres | ≈ 39.370079 Inches |
| 250 Centimetres | ≈ 98.425197 Inches |
| 500 Centimetres | ≈ 196.850394 Inches |
| 1,000 Centimetres | ≈ 393.700787 Inches |
Definitions and assumptions
Length factors are expressed relative to metres. The international foot is exactly 0.3048 m and the inch is exactly 0.0254 m. These definitions do not represent the former US survey foot.
How to use this calculator
- Enter the value you want to convert.
- Choose the source and target units, then adjust the display precision if needed.
- Read the result. Select Convert to open a page for this value, or use the table below.
Frequently asked questions
how many inches is 1 cm?
1 Centimetres ≈ 0.393701 Inches. Auto mode preserves significant digits for small values; manual mode rounds to the selected decimal places. ≈ means approximate; < means below the display limit. Extreme values use × 10ⁿ. Calculations are rounded only for display.
how to convert cm to inches?
The calculator converts the input to the category's reference unit, then divides by the target unit's factor. 1 × 0.393700787402 ≈ 0.393701 Inches. Use the source and target factors shown in the formula. The worked example uses the value on this page, and the table provides other common values.
Can the result be shown as feet and inches?
This calculator shows decimal feet or decimal inches. For a mixed format, take the whole feet and multiply the remaining fraction by 12 to obtain inches.
Why is the displayed result rounded?
Auto mode preserves significant digits for small values; manual mode rounds to the selected decimal places. ≈ means approximate; < means below the display limit. Extreme values use × 10ⁿ. Calculations are rounded only for display.
What input range can I use?
This calculator accepts non-negative values up to 1 trillion, with up to 8 decimal places. It does not calculate signed vectors or calendar date intervals.
Why is a unit unavailable?
A conversion is unavailable when a verified unit definition or a current exchange-rate value has not been configured. The tool does not invent a coefficient.
Sources and methodology
Methods and sources · Content revised
Report a problem