A Femtowatt (fW) equals 1e-15 watt(s), a scaled unit of electrical power used for femto-scale electrical work.
Femtowatts to Kilowatts
Convert Femtowatt (fW) to Kilowatt (kW) instantly with an exact formula, conversion table, and FAQ.
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Convert femtowatts (fW) 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 = fW × 1.000000e-18
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Formula
kW = fW × 1.000000e-18
fW = kW × 1.000000e+18
Conversion table
| 1 fW | 1.000000e-18 kW |
| 5 fW | 5.000000e-18 kW |
| 10 fW | 1.000000e-17 kW |
| 20 fW | 2.000000e-17 kW |
| 50 fW | 5.000000e-17 kW |
| 100 fW | 1.000000e-16 kW |
| 500 fW | 5.000000e-16 kW |
| 1000 fW | 1.000000e-15 kW |
Related conversions
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How the formula works
Both femtowatt and kilowatt measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in femtowatts by 1.000000e-18 to get kilowatts. To reverse the conversion, multiply a kilowatt value by 1.000000e+18 to get back to femtowatts.
Frequently asked questions
What is Femtowatt (fW)?
A Femtowatt (fW) equals 1e-15 watt(s), a scaled unit of electrical power used for femto-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 femtowatts to kilowatts?
Multiply the femtowatt value by 1.000000e-18 to get the equivalent in kilowatts. For example, 5 fW × 1.000000e-18 = 5.000000e-18 kW.
Is this conversion exact?
Yes. Both units use fixed, defined scale factors, so the factor 1.000000e-18 is an exact, non-rounded value.
Can I convert kilowatts back to femtowatts?
Yes. Divide the kilowatt value by 1.000000e-18, or multiply it by 1.000000e+18, to get femtowatts.
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About converting femtowatts to kilowatts
A Femtowatt (fW) equals 1e-15 watt(s), a scaled unit of electrical power used for femto-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 femtowatts 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.