Converter group
Other Converters
Prefixes Converter
Result
... Atto = ... Kilo
Find the units to convert
Atto to Kilo Converter
Use this page to convert atto values into kilo, with background details, formulas, a worked example, and a quick conversion table.
Conversion formula
1 a = 1e-21 k
1 k = 1,000,000,000,000,000,000,000 a
Example: 1000 a = 1e-18 k
Atto
Atto denotes a metric prefix factor of one quintillionth (10^-18).
History: Atto is part of the SI prefix system used to scale metric units.
Current use: Atto is used with scientific, engineering, and technical units when values need compact decimal scaling.
Also written as a.
Kilo
A prefix in the metric system denoting a factor of one thousand (1,000).
History: Derived from the Greek word 'chilioi', meaning thousand.
Current use: Widely used in science, engineering, and everyday life (e.g., kilogram, kilometer).
Also written as k.
Atto to Kilo table
| Atto [a] | Kilo [k] |
|---|---|
| 0.01 a | 1e-23 k |
| 0.1 a | 1e-22 k |
| 1 a | 1e-21 k |
| 2 a | 2e-21 k |
| 5 a | 5e-21 k |
| 10 a | 1e-20 k |
| 20 a | 2e-20 k |
| 50 a | 5e-20 k |
| 100 a | 1e-19 k |