Convert 1 Joule to Femtojoule (1 J to fJ)
Looking to convert 1 joule (J) to femtojoule (fJ)? This page provides the accurate result and a detailed explanation of how the conversion is done. Use this information to understand the relationship between Joule and Femtojoule and how to calculate conversions manually or using online tools.

Looking to convert 1 joule (J) to femtojoule (fJ)? This page provides the accurate result and a detailed explanation of how the conversion is done. Use this information to understand the relationship between Joule and Femtojoule and how to calculate conversions manually or using online tools.
What is Joule to Femtojoule Conversion?
Joule (J) and femtojoule (fJ) are both units used to measure energy, but they serve different purposes depending on the scale of the measurement. If you ever need to convert joule to femtojoule, knowing the exact conversion formula is essential.
J to fj Conversion Formula:
One Joule is equal to 1e+15 Femtojoule.
Formula: 1 J = 1e+15 fJ
By using this conversion factor, you can easily convert any energy from joule to femtojoule with precision.
Convert 1 Joule to Femtojoule
To convert 1 joule to femtojoule, multiply the value by 1e+15 since:
1 joule = 1e+15 femtojoule
So:
1 × 1e+15 = 1e+15
Result: 1 joule = 1e+15 femtojoule
Reverse Conversion
Need the reverse result? You can also convert femtojoule back to joule by dividing 1e+15:
1e+15 femtojoule ÷ 1e+15 = 1 joule
For more, visit: Femtojoule to Joule
Explore Related Conversion Tool
This page focuses specifically on converting 1 Joule to Femtojoule. If you're looking to convert a different value, you can use our general conversion tool:
Frequently Asked Questions
What is 1 joule in femtojoule?
1 joule is equal to 1e+15 femtojoule.
How do I convert joule to femtojoule?
Multiply the value in joule by 1e+15 to get the equivalent in femtojoule.