inches to cm
Convert inches to cm. Enter a value and view the calculation method, examples and conversion table.
Length converter
inches to cm 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 × (0.0254 ÷ 0.01) = 2.54
Worked example: 1 Inches = 2.54 Centimetres
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.
inches to cm conversion table
| Inches | Centimetres |
|---|---|
| 1 Inches | 2.54 Centimetres |
| 2 Inches | 5.08 Centimetres |
| 5 Inches | 12.7 Centimetres |
| 10 Inches | 25.4 Centimetres |
| 20 Inches | 50.8 Centimetres |
| 50 Inches | 127 Centimetres |
| 100 Inches | 254 Centimetres |
| 250 Inches | 635 Centimetres |
| 500 Inches | 1,270 Centimetres |
| 1,000 Inches | 2,540 Centimetres |
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 cm is 1 inch?
1 Inches = 2.54 Centimetres. 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 inches to cm?
The calculator converts the input to the category's reference unit, then divides by the target unit's factor. 1 × 2.54 ≈ 2.54 Centimetres. 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
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