Length and Area
miltocm
Convert mils (mil) to centimetres (cm).
Factor1 mil = 0.00254 cm
Converter
mil
Accepts numbers or expressions, e.g. 150 + 14.7
Result
cm
Rendered to 6 significant figures.
Formula
Formula
cm = mil × 0.00254
Multiply any value in mils by 0.00254 to obtain the value in centimetres.
Worked example
Convert 1000 mil to cm.
- 01Start with 1000 mil.
- 02Multiply by the conversion factor: 1000 × 0.00254 = 2.54 cm.
Result1000 mil = 2.54 cm
Conversion table
| mil | cm |
|---|---|
| 1 | 0.00254 |
| 2 | 0.00508 |
| 5 | 0.0127 |
| 10 | 0.0254 |
| 20 | 0.0508 |
| 50 | 0.127 |
| 100 | 0.254 |
| 200 | 0.508 |
| 500 | 1.27 |
| 1000 | 2.54 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from mil to cm?
1 mil equals 0.00254 cm. To convert, multiply the value in mils by 0.00254.
How do I convert 1 mil to cm?
1 mil = 0.00254 cm. For any value, multiply by 0.00254.
How do I convert cm back to mil?
Divide by the same factor — or equivalently, multiply by 393.7008. So 1 cm = 393.701 mil.
When would I need to convert mil (thousandth of an inch) to centimetre?
Length conversions appear in piping, layout, and mechanical drawings — particularly when reconciling imperial fittings or instrument lengths with metric plant drawings.
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).