Centimetres to Micrometres Converter

This converter changes a length in centimetres (cm) into micrometres (µm), the tiny unit used in engineering tolerances, fabric and paper thickness, coatings, biology and laboratory work, where millimetres are still too coarse to be useful. Type any value into the centimetres field and the tool instantly multiplies it by the exact factor of 10,000, since one centimetre equals 10,000 micrometres, and returns the equivalent in micrometres in the result panel above, alongside a quick split showing that 1 cm equals 10,000 µm and 1 µm equals 0.0001 cm. Because the factor is fixed by the international definitions of the metre and the inch, the underlying conversion is exact; only the number shown on screen is rounded for readability. Below the calculator you will find the formula written out (µm = cm x 10,000, and the reverse, cm = µm x 0.0001), a worked example converting 10 centimetres to 100,000 micrometres, and a quick-reference table covering common values from 1 cm up to 100 cm so you can check a range of figures at a glance. Use it for schoolwork, trade measurements, manufacturing specifications, scientific reporting or anywhere you need to move quickly and accurately between these two metric units, without doing the multiplication by hand.

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Value in centimetres (cm)

10,000 μm

1 cm =10,000 µm

1 µm =0.0001 cm

The formula

Multiply centimetres by 10,000 to get micrometres. In symbols, µm = cm × 10,000. To go the other way, multiply micrometres by 0.0001 to get centimetres.

Worked example

Convert 10 centimetres to micrometres: 10 × 10,000 = 100,000 micrometres.

Quick reference

Centimetres	Micrometres
1 cm	10,000 µm
2 cm	20,000 µm
5 cm	50,000 µm
10 cm	100,000 µm
25 cm	250,000 µm
50 cm	500,000 µm
100 cm	1,000,000 µm

Frequently asked questions

How many micrometres are in one centimetre?

One centimetre equals 10,000 micrometres. Multiply the number of centimetres by 10,000 to convert.

What is the formula to convert centimetres to micrometres?

Centimetres times 10,000 equals micrometres. To reverse it, multiply micrometres by 0.0001 to get centimetres.

Is the cm to µm conversion exact?

The factor comes from the standard definitions of the metre and the international inch (0.0254 m exactly), so the underlying conversion is exact. Displayed results are rounded for readability.

Who this converter is for

This converter is for students, tradespeople, travellers and anyone who needs to change centimetres into micrometres quickly and accurately.