Ronna (R)
The SI prefix ronna (R): a factor of 10²⁷, which is one octillion (10²⁷).
What is a ronna unit?
- Symbol
- R
- Quantity
- SI Prefixes
- Unit system
- SI
- Definition
- The SI prefix ronna (R): a factor of 10²⁷, which is one octillion (10²⁷).
- Exact
- Yes, the value is exact by definition
- Source
- SI Brochure, 9th edition (BIPM, 2019)
Common applications
Added to the SI in 2022. The mass of the Earth is about 6 ronnagrams (6 × 10²⁷ g).
Ronna in other si prefixes units
- 1 R = 0.001 QQuetta
- 1 R = 1000 YYotta
- 1 R = 1000000 ZZetta
- 1 R = 1000000000 EExa
- 1 R = 1000000000000 PPeta
- 1 R = 1e+15 TTera
- 1 R = 1e+18 GGiga
- 1 R = 1e+21 MMega
- 1 R = 1e+24 kKilo
- 1 R = 1e+25 hHecto
- 1 R = 1e+26 daDeca
- 1 R = 1e+28 dDeci
- 1 R = 1e+29 cCenti
- 1 R = 1e+30 mMilli
- 1 R = 1e+33 µMicro
- 1 R = 1e+36 nNano
- 1 R = 1e+39 pPico
- 1 R = 1e+42 fFemto
- 1 R = 1e+45 aAtto
- 1 R = 1e+48 zZepto
- 1 R = 1e+51 yYocto
- 1 R = 1e+54 rRonto
- 1 R = 1e+57 qQuecto
- 1 R = 1e+27 ×1Base unit (no prefix)
Ronna quick reference
| Ronna | Kilo | Milli | Quetta |
|---|---|---|---|
| 1 R | = 1e+24 k | = 1e+30 m | = 0.001 Q |
| 10 R | = 1e+25 k | = 1e+31 m | = 0.01 Q |
| 100 R | = 1e+26 k | = 1e+32 m | = 0.1 Q |
| 1000 R | = 1e+27 k | = 1e+33 m | = 1 Q |
Where the ronna unit fits
The next smaller si prefixes unit is the yotta unit (Y). 1 R = 1000 Y, and 1 Y = 0.001 R.
The next larger si prefixes unit is the quetta unit (Q). 1 R = 0.001 Q, and 1 Q = 1000 R.
Frequently asked questions
- How many kilo units are in one ronna unit?
- One ronna unit = 1e+24 k (kilo units).
- How many milli units are in one ronna unit?
- One ronna unit = 1e+30 m (milli units).
- How many quetta units are in one ronna unit?
- One ronna unit = 0.001 Q (quetta units).