Micro (µ)
The SI prefix micro (µ): a factor of 10⁻⁶, which is one millionth (10⁻⁶).
What is a micro unit?
- Symbol
- µ
- Quantity
- SI Prefixes
- Unit system
- SI
- Definition
- The SI prefix micro (µ): a factor of 10⁻⁶, which is one millionth (10⁻⁶).
- Exact
- Yes, the value is exact by definition
- Source
- SI Brochure, 9th edition (BIPM, 2019)
Common applications
Used for micrometers (microns), micrograms, microseconds, microliters and microfarads. The symbol is µ; a plain u is often typed instead.
Micro in other si prefixes units
- 1 µ = 1e-36 QQuetta
- 1 µ = 1e-33 RRonna
- 1 µ = 1e-30 YYotta
- 1 µ = 1e-27 ZZetta
- 1 µ = 1e-24 EExa
- 1 µ = 1e-21 PPeta
- 1 µ = 1e-18 TTera
- 1 µ = 1e-15 GGiga
- 1 µ = 1e-12 MMega
- 1 µ = 1e-9 kKilo
- 1 µ = 1e-8 hHecto
- 1 µ = 1e-7 daDeca
- 1 µ = 0.00001 dDeci
- 1 µ = 0.0001 cCenti
- 1 µ = 0.001 mMicro to Milli converter
- 1 µ = 1000 nMicro to Nano converter
- 1 µ = 1000000 pPico
- 1 µ = 1000000000 fFemto
- 1 µ = 1000000000000 aAtto
- 1 µ = 1e+15 zZepto
- 1 µ = 1e+18 yYocto
- 1 µ = 1e+21 rRonto
- 1 µ = 1e+24 qQuecto
- 1 µ = 0.000001 ×1Micro to Base unit (no prefix) converter
Micro quick reference
| Micro | Milli | Nano | Base unit (no prefix) |
|---|---|---|---|
| 1 µ | = 0.001 m | = 1000 n | = 0.000001 ×1 |
| 10 µ | = 0.01 m | = 10000 n | = 0.00001 ×1 |
| 100 µ | = 0.1 m | = 100000 n | = 0.0001 ×1 |
| 1000 µ | = 1 m | = 1000000 n | = 0.001 ×1 |
Where the micro unit fits
The next smaller si prefixes unit is the nano unit (n). 1 µ = 1000 n, and 1 n = 0.001 µ.
The next larger si prefixes unit is the milli unit (m). 1 µ = 0.001 m, and 1 m = 1000 µ.
Frequently asked questions
- How many milli units are in one micro unit?
- One micro unit = 0.001 m (milli units).
- How many nano units are in one micro unit?
- One micro unit = 1000 n (nano units).
- How many base units are in one micro unit?
- One micro unit = 0.000001 ×1 (base units).