A Kilowatt (kW) equals 1,000 watt(s), a scaled unit of electrical power used for kilo-scale electrical work.
Kilowatts to Attowatts
Convert Kilowatt (kW) to Attowatt (aW) instantly with an exact formula, conversion table, and FAQ.
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Convert kilowatts (kW) to attowatts (aW) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
An Attowatt (aW) equals 1e-18 watt(s), a scaled unit of electrical power used for atto-scale electrical work.
aW = kW × 1.000000e+21
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Formula
aW = kW × 1.000000e+21
kW = aW × 1.000000e-21
Conversion table
| 1 kW | 1.000000e+21 aW |
| 5 kW | 5.000000e+21 aW |
| 10 kW | 1.000000e+22 aW |
| 20 kW | 2.000000e+22 aW |
| 50 kW | 5.000000e+22 aW |
| 100 kW | 1.000000e+23 aW |
| 500 kW | 5.000000e+23 aW |
| 1000 kW | 1.000000e+24 aW |
Related conversions
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How the formula works
Both kilowatt and attowatt measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in kilowatts by 1.000000e+21 to get attowatts. To reverse the conversion, multiply a attowatt value by 1.000000e-21 to get back to kilowatts.
Frequently asked questions
What is Kilowatt (kW)?
A Kilowatt (kW) equals 1,000 watt(s), a scaled unit of electrical power used for kilo-scale electrical work.
What is Attowatt (aW)?
An Attowatt (aW) equals 1e-18 watt(s), a scaled unit of electrical power used for atto-scale electrical work.
How do I convert kilowatts to attowatts?
Multiply the kilowatt value by 1.000000e+21 to get the equivalent in attowatts. For example, 5 kW × 1.000000e+21 = 5.000000e+21 aW.
Is this conversion exact?
Yes. Both units use fixed, defined scale factors, so the factor 1.000000e+21 is an exact, non-rounded value.
Can I convert attowatts back to kilowatts?
Yes. Divide the attowatt value by 1.000000e+21, or multiply it by 1.000000e-21, to get kilowatts.
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About converting kilowatts to attowatts
A Kilowatt (kW) equals 1,000 watt(s), a scaled unit of electrical power used for kilo-scale electrical work. An Attowatt (aW) equals 1e-18 watt(s), a scaled unit of electrical power used for atto-scale electrical work.
Use this calculator to move between kilowatts and attowatts accurately for homework, engineering, billing, or everyday electricity calculations. The Universal Converter uses exact unit factors, so results stay consistent across the site.