Convert watt-second to kilojoule
Please provide values below to convert watt-second [W*s] to kilojoule [kJ], or Convert kilojoule to watt-second.
1 W*s = 0.001 kJ. To convert watt-second to kilojoule, multiply the value by 0.001; to go the other way, divide by it (1 kJ = 1000 W*s). Both units measure energy and appear in everyday as well as technical calculations, so switching between them quickly is often useful.
Quick Reference
- 1 W*s = 0.001 kJ
- 1 kJ = 1000 W*s
- 10 W*s = 0.01 kJ
- 100 W*s = 0.1 kJ
How to Convert Watt-Second to Kilojoule
1 W*s = 0.001 kJ
Example: convert 15 W*s to kJ:
15 W*s = 15 × 0.001 kJ = 0.015 kJ
Watt-Second to Kilojoule Conversion Table
| watt-second | kilojoule |
|---|---|
| 1 W*s | 0.001 kJ |
| 2 W*s | 0.002 kJ |
| 3 W*s | 0.003 kJ |
| 5 W*s | 0.005 kJ |
| 10 W*s | 0.01 kJ |
| 20 W*s | 0.02 kJ |
| 50 W*s | 0.05 kJ |
| 100 W*s | 0.1 kJ |
| 500 W*s | 0.5 kJ |
| 1000 W*s | 1 kJ |
Watt-Second
A watt-second (W·s) is a unit of energy equivalent to one joule, representing the amount of energy transferred or converted when one watt of power is applied for one second.
History/Origin
The watt-second originated from the SI system of units, where the watt (W) is the SI derived unit of power, and the second (s) is the SI base unit of time. It has been used historically in physics and engineering to quantify energy, especially in contexts where energy transfer occurs over short durations.
Current Use
The watt-second is primarily used in scientific and engineering contexts to measure small amounts of energy, such as in electrical and mechanical systems. It is often replaced by the joule in modern applications but remains a recognized unit within the energy converter category.
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 watt-second in kilojoule?
1 watt-second (W*s) = 0.001 kilojoule (kJ).
How do you convert watt-second to kilojoule?
Multiply the watt-second value by 0.001. For example, 25 W*s × 0.001 = 0.025 kJ.
What is 10 watt-second in kilojoule?
10 W*s = 0.01 kJ.
Which unit is larger, the watt-second or the kilojoule?
The kilojoule is the larger unit: 1 W*s equals only 0.001 kJ.