Length and Area
μmtocm
Convert micrometres (μm) to centimetres (cm).
Factor1 μm = 1e-4 cm
Converter
μm
Accepts numbers or expressions, e.g. 150 + 14.7
Result
cm
Rendered to 6 significant figures.
Formula
Formula
cm = μm × 1e-4
Multiply any value in micrometres by 1e-4 to obtain the value in centimetres.
Worked example
Convert 10000 μm to cm.
- 01Start with 10000 μm.
- 02Multiply by the conversion factor: 10000 × 1e-4 = 1 cm.
Result10000 μm = 1 cm
Conversion table
| μm | cm |
|---|---|
| 1 | 1e-4 |
| 2 | 0.0002 |
| 5 | 0.0005 |
| 10 | 0.001 |
| 20 | 0.002 |
| 50 | 0.005 |
| 100 | 0.01 |
| 200 | 0.02 |
| 500 | 0.05 |
| 1000 | 0.1 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from μm to cm?
1 μm equals 1e-4 cm. To convert, multiply the value in micrometres by 1e-4.
How do I convert 1 μm to cm?
1 μm = 1e-4 cm. For any value, multiply by 1e-4.
How do I convert cm back to μm?
Divide by the same factor — or equivalently, multiply by 10000. So 1 cm = 10000 μm.
When would I need to convert micrometre 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?
Yes. Both μm and cm are defined by exact SI relationships, so the displayed factor is exact (any rounding shown is only for display).