Femtowatt to Nanojoule
Compare Femtowatt and Nanojoule. See why these engineering units measure different physical quantities, plus links to valid conversions.
Reserved for a responsive leaderboard above the conversion details.
Professional calculator style
World-scale conversion engine
30+ categories
6,500+ units
Instant results
Offline ready
Converter
Engineering Converter
Convert common stress, force, torque, power, and energy units used in engineering.
Context values
Some unit families need one extra value for a physically accurate result.
Use the converter to see the formula.
Femtowatt and Nanojoule measure different quantities, so no single result applies.
Reserved above the conversion cards and below the converter.
Formula
Femtowatt (fW) measures power, while Nanojoule (nJ) measures energy. These are different physical quantities, so there is no single multiplication factor that converts one into the other.
fW relates to its own power base unit by a factor of 0. nJ relates to its own energy base unit by a factor of 1e-09.
Conversion table
| Femtowatt (fW) | 0 × power base unit |
| Nanojoule (nJ) | 1e-09 × energy base unit |
Related conversions
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
Can Femtowatt be converted to Nanojoule?
Not directly. Femtowatt measures power and Nanojoule measures energy. Converting between different physical quantities needs an extra physical relationship (such as area, distance, or time), not just a unit ratio.
What is Femtowatt used for?
The Femtowatt (fW) is a unit of power. Femtowatt is 1e-15 watt units.
What is Nanojoule used for?
The Nanojoule (nJ) is a unit of energy. Nanojoule is 1e-9 joule units.
Why does the converter show an incompatible units message?
The Universal Converter only calculates a numeric result when both units share the same physical dimension. Since Femtowatt and Nanojoule don't, the tool flags them as not directly compatible rather than returning a meaningless number.
What should I convert Femtowatt to instead?
Use another power unit, such as one of the related Femtowatt conversions linked below.
What should I convert Nanojoule to instead?
Use another energy unit, such as one of the related Nanojoule conversions linked below.
Reserved between the FAQ and the article so the page stays balanced.
About this conversion
This page compares Femtowatt (fW) and Nanojoule (nJ) within the engineering converter.
Femtowatt is 1e-15 watt units. Nanojoule is 1e-9 joule units.
Because Femtowatt measures power and Nanojoule measures energy, the two units are not directly convertible: there is no fixed ratio that turns one into the other without additional information.
The calculator above will report that these units are not compatible. For a working result, choose two units from the same measurement family — see the related conversions below.