Femtojoule is 1e-15 joule units.
Femtojoules to Nanojoules Converter — fJ to nJ
Convert Femtojoule (fJ) to Nanojoule (nJ) using the exact conversion factor (1 femtojoule = 0.000001 nanojoule). See the formula, worked examples, and conversion table.
Femtojoules to Nanojoules converter
Converter
Energy Converter
Convert joules, calories, kilowatt-hours, BTU, electronvolts, therms, and mechanical work units.
Context values
Some unit families need one extra value for a physically accurate result.
Nanojoule is 1e-9 joule units.
Result = input x 1e-15 / 1e-9.
Energy uses the joule as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Femtojoules to Nanojoules
Femtojoule and Nanojoule both measure energy, and the conversion is especially useful for comparing nutrition labels (kilocalories) against scientific energy figures (joules). Specifically: Femtojoule is 1e-15 joule units, and nanojoule is 1e-9 joule units.
Formula
nanojoules = femtojoules × 0.000001
This factor comes from each unit's defined relationship to the category's base unit: 1 femtojoule equals 1e-15 base units, and 1 nanojoule equals 1e-9 base units, so dividing one by the other gives the direct femtojoule-to-nanojoule factor of 0.000001.
Simple example
1 fJ × 0.000001 = 0.000001 nJ
1 femtojoule = 0.000001 nanojoules.
Real-world example
100 fJ × 0.000001 = 0.0001 nJ
100 femtojoules = 0.0001 nanojoules.
Conversion table
| Femtojoule (fJ) | Nanojoule (nJ) |
|---|---|
| 1 fJ | 0.000001 nJ |
| 10 fJ | 0.00001 nJ |
| 100 fJ | 0.0001 nJ |
| 500 fJ | 0.0005 nJ |
| 1,000 fJ | 0.001 nJ |
| 2,000 fJ | 0.002 nJ |
Reverse conversion: Nanojoule to Femtojoule
0.000001 nJ × 1000000 = 1 fJ
0.000001 nanojoules = 1 femtojoule.
femtojoules = nanojoules × 1000000
For a page dedicated to this direction, see Nanojoule to Femtojoule.
Understanding the Femtojoule (fJ)
Femtojoule is 1e-15 joule units.
Understanding the Nanojoule (nJ)
Nanojoule is 1e-9 joule units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many nanojoules are in 1 femtojoule?
1 femtojoule equals 0.000001 nanojoules, using the exact defined conversion factor rather than an estimate.
How do I convert femtojoule to nanojoule?
Multiply the femtojoule value by 0.000001. The converter above does this instantly to whatever precision you set.
How do I convert nanojoule back to femtojoule?
Use the reverse factor: 1 nanojoule equals 1,000,000 femtojoules. You can also use the swap control in the converter above to flip the direction instantly.
What is a femtojoule?
Femtojoule (fJ) is a unit of energy.
What is a nanojoule?
Nanojoule (nJ) is a unit of energy.
Is the femtojoule to nanojoule conversion exact?
Yes. Both femtojoule and nanojoule are defined by fixed standards rather than physical artifacts, so the factor of 0.000001 used above is exact to as many digits as you choose to display.