Femtojoule to Attojoule
Convert Femtojoule to Attojoule instantly. Free online engineering unit converter with exact formula, conversion table and FAQ.
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.
Results update instantly for Femtojoule to Attojoule conversions.
Reserved above the conversion cards and below the converter.
Formula
aJ = fJ × 1000
fJ = aJ × 0.001
Conversion table
| 1 fJ | 1000 aJ |
| 5 fJ | 5000 aJ |
| 10 fJ | 10000 aJ |
| 20 fJ | 20000 aJ |
| 50 fJ | 50000 aJ |
| 100 fJ | 100000 aJ |
| 500 fJ | 500000 aJ |
| 1000 fJ | 1000000 aJ |
Related conversions
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
What is the source unit in this conversion?
The source unit is the Femtojoule (fJ). Femtojoule is 1e-15 joule units.
What is the destination unit in this conversion?
The destination unit is the Attojoule (aJ). Attojoule is 1e-18 joule units.
How do I convert Femtojoule to Attojoule?
Multiply the Femtojoule value by 1000. For example, 10 fJ × 1000 = 10000 aJ.
Is the Femtojoule to Attojoule conversion exact?
Yes. Both units belong to the same engineering measurement family (energy), so the ratio between them is a fixed, defined value rather than a measured approximation.
Where is this conversion commonly used?
It's used whenever a value expressed in Femtojoule needs to be compared with, or reported in, Attojoule, such as in engineering, scientific, or industrial calculations.
Can I convert Attojoule back to Femtojoule?
Yes. Multiply the Attojoule value by 0.001 to get Femtojoule.
Reserved between the FAQ and the article so the page stays balanced.
About this conversion
This page converts Femtojoule (fJ) to Attojoule (aJ) within the engineering converter.
Femtojoule is 1e-15 joule units. Attojoule is 1e-18 joule units.
The formula is aJ = fJ × 1000, based on each unit's fixed relationship to the energy base unit.
The conversion is exact, since it relies on a fixed numerical ratio between the two units rather than a measured or approximate value.
Use the calculator above for instant results, or the table below for common Femtojoule values already converted to Attojoule.