An Attowatt (aW) equals 1e-18 watt(s), a scaled unit of electrical power used for atto-scale electrical work.
Attowatts to Kilowatts
Convert Attowatt (aW) to Kilowatt (kW) instantly with an exact formula, conversion table, and FAQ.
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Convert attowatts (aW) to kilowatts (kW) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
A Kilowatt (kW) equals 1,000 watt(s), a scaled unit of electrical power used for kilo-scale electrical work.
kW = aW × 1.000000e-21
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Formula
kW = aW × 1.000000e-21
aW = kW × 1.000000e+21
Conversion table
| 1 aW | 1.000000e-21 kW |
| 5 aW | 5.000000e-21 kW |
| 10 aW | 1.000000e-20 kW |
| 20 aW | 2.000000e-20 kW |
| 50 aW | 5.000000e-20 kW |
| 100 aW | 1.000000e-19 kW |
| 500 aW | 5.000000e-19 kW |
| 1000 aW | 1.000000e-18 kW |
Related conversions
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How the formula works
Both attowatt and kilowatt measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in attowatts by 1.000000e-21 to get kilowatts. To reverse the conversion, multiply a kilowatt value by 1.000000e+21 to get back to attowatts.
Frequently asked questions
What is Attowatt (aW)?
An Attowatt (aW) equals 1e-18 watt(s), a scaled unit of electrical power used for atto-scale electrical work.
What is Kilowatt (kW)?
A Kilowatt (kW) equals 1,000 watt(s), a scaled unit of electrical power used for kilo-scale electrical work.
How do I convert attowatts to kilowatts?
Multiply the attowatt value by 1.000000e-21 to get the equivalent in kilowatts. For example, 5 aW × 1.000000e-21 = 5.000000e-21 kW.
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 kilowatts back to attowatts?
Yes. Divide the kilowatt value by 1.000000e-21, or multiply it by 1.000000e+21, to get attowatts.
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About converting attowatts to kilowatts
An Attowatt (aW) equals 1e-18 watt(s), a scaled unit of electrical power used for atto-scale electrical work. A Kilowatt (kW) equals 1,000 watt(s), a scaled unit of electrical power used for kilo-scale electrical work.
Use this calculator to move between attowatts and kilowatts accurately for homework, engineering, billing, or everyday electricity calculations. The Universal Converter uses exact unit factors, so results stay consistent across the site.