An Attowatt (aW) equals 1e-18 watt(s), a scaled unit of electrical power used for atto-scale electrical work.
Attowatts to Femtowatts
Convert Attowatt (aW) to Femtowatt (fW) instantly with an exact formula, conversion table, and FAQ.
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Convert attowatts (aW) to femtowatts (fW) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
A Femtowatt (fW) equals 1e-15 watt(s), a scaled unit of electrical power used for femto-scale electrical work.
fW = aW × 0.001
Results update instantly for Attowatts to Femtowatts conversions.
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Formula
fW = aW × 0.001
aW = fW × 1000
Conversion table
| 1 aW | 0.001 fW |
| 5 aW | 0.005 fW |
| 10 aW | 0.01 fW |
| 20 aW | 0.02 fW |
| 50 aW | 0.05 fW |
| 100 aW | 0.1 fW |
| 500 aW | 0.5 fW |
| 1000 aW | 1 fW |
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How the formula works
Both attowatt and femtowatt measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in attowatts by 0.001 to get femtowatts. To reverse the conversion, multiply a femtowatt value by 1000 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 Femtowatt (fW)?
A Femtowatt (fW) equals 1e-15 watt(s), a scaled unit of electrical power used for femto-scale electrical work.
How do I convert attowatts to femtowatts?
Multiply the attowatt value by 0.001 to get the equivalent in femtowatts. For example, 5 aW × 0.001 = 0.005 fW.
Is this conversion exact?
Yes. Both units use fixed, defined scale factors, so the factor 0.001 is an exact, non-rounded value.
Can I convert femtowatts back to attowatts?
Yes. Divide the femtowatt value by 0.001, or multiply it by 1000, to get attowatts.
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About converting attowatts to femtowatts
An Attowatt (aW) equals 1e-18 watt(s), a scaled unit of electrical power used for atto-scale electrical work. A Femtowatt (fW) equals 1e-15 watt(s), a scaled unit of electrical power used for femto-scale electrical work.
Use this calculator to move between attowatts and femtowatts accurately for homework, engineering, billing, or everyday electricity calculations. The Universal Converter uses exact unit factors, so results stay consistent across the site.