Convert attojoule to kilojoule
Please provide values below to convert attojoule [aJ] to kilojoule [kJ], or Convert kilojoule to attojoule.
1 aJ = 1.0000e-21 kJ. To convert attojoule to kilojoule, multiply the value by 1.0000e-21; to go the other way, divide by it (1 kJ = 1.0000e+21 aJ). Both units measure energy and appear in everyday as well as technical calculations, so switching between them quickly is often useful.
Quick Reference
- 1 aJ = 1.0000e-21 kJ
- 1 kJ = 1.0000e+21 aJ
- 10 aJ = 1.0000e-20 kJ
- 100 aJ = 1.0000e-19 kJ
How to Convert Attojoule to Kilojoule
1 aJ = 1e-21 kJ
Example: convert 15 aJ to kJ:
15 aJ = 15 × 1e-21 kJ = 1.5e-20 kJ
Attojoule to Kilojoule Conversion Table
| attojoule | kilojoule |
|---|---|
| 1 aJ | 1.0000e-21 kJ |
| 2 aJ | 2.0000e-21 kJ |
| 3 aJ | 3.0000e-21 kJ |
| 5 aJ | 5.0000e-21 kJ |
| 10 aJ | 1.0000e-20 kJ |
| 20 aJ | 2.0000e-20 kJ |
| 50 aJ | 5.0000e-20 kJ |
| 100 aJ | 1.0000e-19 kJ |
| 500 aJ | 5.0000e-19 kJ |
| 1000 aJ | 1.0000e-18 kJ |
Attojoule
An attojoule (aJ) is a unit of energy equal to 10^-18 joules.
History/Origin
The attojoule was introduced as part of the SI prefixes to measure extremely small amounts of energy, particularly in fields like nanotechnology and quantum physics, as the need to quantify very tiny energy scales grew.
Current Use
The attojoule is used in scientific research to measure minute energy quantities, such as in nanotechnology, quantum computing, and molecular biology, where energies involved are extremely small.
Kilojoule
A kilojoule (kJ) is a unit of energy equal to 1,000 joules, used to quantify energy transfer or work done.
History/Origin
The kilojoule was introduced as part of the International System of Units (SI) to provide a convenient scale for measuring energy, especially in fields like nutrition and physics, replacing the joule for larger quantities.
Current Use
The kilojoule is widely used in nutrition to express food energy content, in physics and engineering to measure energy transfer, and in various scientific and industrial applications within the 'Energy' converter category.
Frequently Asked Questions
What is 1 attojoule in kilojoule?
1 attojoule (aJ) = 1.0000e-21 kilojoule (kJ).
How do you convert attojoule to kilojoule?
Multiply the attojoule value by 1.0000e-21. For example, 25 aJ × 1.0000e-21 = 2.5000e-20 kJ.
What is 10 attojoule in kilojoule?
10 aJ = 1.0000e-20 kJ.
Which unit is larger, the attojoule or the kilojoule?
The kilojoule is the larger unit: 1 aJ equals only 1.0000e-21 kJ.