Length and Area
cmtoμm
Convert centimetres (cm) to micrometres (μm).
Factor1 cm = 10000 μm
Converter
cm
Accepts numbers or expressions, e.g. 150 + 14.7
Result
μm
Rendered to 6 significant figures.
Formula
Formula
μm = cm × 10000
Multiply any value in centimetres by 10000 to obtain the value in micrometres.
Worked example
Convert 1 cm to μm.
- 01Start with 1 cm.
- 02Multiply by the conversion factor: 1 × 10000 = 10000 μm.
Result1 cm = 10000 μm
Conversion table
| cm | μm |
|---|---|
| 1 | 10000 |
| 2 | 20000 |
| 5 | 50000 |
| 10 | 1.0000e+5 |
| 20 | 2.0000e+5 |
| 50 | 5.0000e+5 |
| 100 | 1.0000e+6 |
| 200 | 2.0000e+6 |
| 500 | 5.0000e+6 |
| 1000 | 1e+7 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from cm to μm?
1 cm equals 10000 μm. To convert, multiply the value in centimetres by 10000.
How do I convert 1 cm to μm?
1 cm = 10000 μm. For any value, multiply by 10000.
How do I convert μm back to cm?
Divide by the same factor — or equivalently, multiply by 0.0001. So 1 μm = 0.0001 cm.
When would I need to convert centimetre to micrometre?
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 cm and μm are defined by exact SI relationships, so the displayed factor is exact (any rounding shown is only for display).