Inches to m
One in equals 0.0254 m. Type any number and the answer appears as you type — the maths happens in your browser.
Result
The same value in every unit
| Unit | Value |
|---|
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Common values
| inches | m |
|---|---|
| 1 in | 0.0254 m |
| 2 in | 0.0508 m |
| 3 in | 0.0762 m |
| 5 in | 0.127 m |
| 10 in | 0.254 m |
| 15 in | 0.381 m |
| 20 in | 0.508 m |
| 25 in | 0.635 m |
| 50 in | 1.27 m |
| 100 in | 2.54 m |
| 500 in | 12.7 m |
| 1000 in | 25.4 m |
How to use
- Enter the number of inches in the field.
- The result in m updates on every keystroke.
- Use the table below for the values people look up most often.
Formula and reverse conversion
The formula
To convert by hand: m = in ÷ 39.37007874. Going back the other way, one m is 39.37007874 in.
Where the odd number comes from
The factor is not a round number because the imperial units are defined through the metric ones by international agreement: an inch is exactly 25.4 mm and a pound is exactly 0.45359237 kg. Everything else follows from those definitions.
m = in ÷ 39.37007874
Frequently asked questions
How many m are in one inches?
One in is 0.0254 m.
How do I convert inches to m?
Multiply by the factor: m = in ÷ 39.37007874.
Is the result exact?
The factors are the exact legal definitions, and up to ten significant digits are kept in the answer. Rounding happens only in the display.
How do I convert m back to inches?
One m is 39.37007874 in — or open the reverse page linked below.