Picojoule is 1e-12 joule units.
Picojoules to Femtojoules Converter — pJ to fJ
Convert Picojoule (pJ) to Femtojoule (fJ) using the exact conversion factor (1 picojoule = 1,000 femtojoule). See the formula, worked examples, and conversion table.
Picojoules to Femtojoules converter
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.
Femtojoule is 1e-15 joule units.
Result = input x 1e-12 / 1e-15.
Energy units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Picojoules to Femtojoules
Picojoule and Femtojoule both measure a quantity used in structural or mechanical engineering — commonly stress, pressure, force, torque, power, or energy — where converting between the unit conventions used in different regions, industries, or equipment specifications is a routine part of design work. Specifically: Picojoule is 1e-12 joule units, and femtojoule is 1e-15 joule units.
Formula
femtojoules = picojoules × 1000
This factor comes from each unit's defined relationship to the category's base unit: 1 picojoule equals 1e-12 base units, and 1 femtojoule equals 1e-15 base units, so dividing one by the other gives the direct picojoule-to-femtojoule factor of 1000.
Simple example
1 pJ × 1000 = 1,000 fJ
1 picojoule = 1,000 femtojoules.
Real-world example
100 pJ × 1000 = 100,000 fJ
100 picojoules = 100,000 femtojoules.
Conversion table
| Picojoule (pJ) | Femtojoule (fJ) |
|---|---|
| 1 pJ | 1,000 fJ |
| 10 pJ | 10,000 fJ |
| 50 pJ | 50,000 fJ |
| 100 pJ | 100,000 fJ |
| 500 pJ | 500,000 fJ |
| 1,000 pJ | 1,000,000 fJ |
Reverse conversion: Femtojoule to Picojoule
1 fJ × 0.001 = 0.001 pJ
1 femtojoule = 0.001 picojoules.
picojoules = femtojoules × 0.001
For a page dedicated to this direction, see Femtojoule to Picojoule.
Understanding the Picojoule (pJ)
Picojoule is 1e-12 joule units.
Understanding the Femtojoule (fJ)
Femtojoule is 1e-15 joule units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many femtojoules are in 1 picojoule?
1 picojoule equals 1,000 femtojoules, using the exact defined conversion factor rather than an estimate.
How do I convert picojoule to femtojoule?
Multiply the picojoule value by 1000. The converter above does this instantly to whatever precision you set.
How do I convert femtojoule back to picojoule?
Use the reverse factor: 1 femtojoule equals 0.001 picojoules. You can also use the swap control in the converter above to flip the direction instantly.
What is a picojoule?
Picojoule (pJ) is a unit of engineering.
What is a femtojoule?
Femtojoule (fJ) is a unit of engineering.
Is the picojoule to femtojoule conversion exact?
Yes. Both picojoule and femtojoule are defined by fixed standards rather than physical artifacts, so the factor of 1000 used above is exact to as many digits as you choose to display.
Why do engineering unit conventions vary so much by region and industry?
Pressure, force, and stress can be expressed in metric (pascal, newton), US customary (psi, pound-force), or older and industry-specific units (atmosphere, torr, kip) depending on the country, industry, and even the equipment manufacturer, which is why engineers routinely need to convert between them when working across specs from different sources.