Hecto (h)
The SI prefix hecto (h): a factor of 10², which is one hundred (10²).
What is a hecto unit?
- Symbol
- h
- Quantity
- SI Prefixes
- Unit system
- SI
- Definition
- The SI prefix hecto (h): a factor of 10², which is one hundred (10²).
- Exact
- Yes, the value is exact by definition
- Source
- SI Brochure, 9th edition (BIPM, 2019)
Common applications
Used for hectares of land, hectopascals in weather forecasts (equal to millibars) and hectoliters of wine and beer.
Hecto in other si prefixes units
- 1 h = 1e-28 QQuetta
- 1 h = 1e-25 RRonna
- 1 h = 1e-22 YYotta
- 1 h = 1e-19 ZZetta
- 1 h = 1e-16 EExa
- 1 h = 1e-13 PPeta
- 1 h = 1e-10 TTera
- 1 h = 1e-7 GGiga
- 1 h = 0.0001 MMega
- 1 h = 0.1 kKilo
- 1 h = 10 daDeca
- 1 h = 1000 dDeci
- 1 h = 10000 cCenti
- 1 h = 100000 mMilli
- 1 h = 100000000 µMicro
- 1 h = 100000000000 nNano
- 1 h = 100000000000000 pPico
- 1 h = 1e+17 fFemto
- 1 h = 1e+20 aAtto
- 1 h = 1e+23 zZepto
- 1 h = 1e+26 yYocto
- 1 h = 1e+29 rRonto
- 1 h = 1e+32 qQuecto
- 1 h = 100 ×1Base unit (no prefix)
Hecto quick reference
| Hecto | Kilo | Milli | Quetta |
|---|---|---|---|
| 1 h | = 0.1 k | = 100000 m | = 1e-28 Q |
| 10 h | = 1 k | = 1000000 m | = 1e-27 Q |
| 100 h | = 10 k | = 10000000 m | = 1e-26 Q |
| 1000 h | = 100 k | = 100000000 m | = 1e-25 Q |
Where the hecto unit fits
The next smaller si prefixes unit is the deca unit (da). 1 h = 10 da, and 1 da = 0.1 h.
The next larger si prefixes unit is the kilo unit (k). 1 h = 0.1 k, and 1 k = 10 h.
Frequently asked questions
- How many kilo units are in one hecto unit?
- One hecto unit = 0.1 k (kilo units).
- How many milli units are in one hecto unit?
- One hecto unit = 100000 m (milli units).
- How many quetta units are in one hecto unit?
- One hecto unit = 1e-28 Q (quetta units).