Convert 1 Horsepower-hour to Femtojoule (1 hp⋅h to fJ)
Looking to convert 1 horsepower-hour (hp⋅h) 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 Horsepower-hour and Femtojoule and how to calculate conversions manually or using online tools.

Looking to convert 1 horsepower-hour (hp⋅h) 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 Horsepower-hour and Femtojoule and how to calculate conversions manually or using online tools.
What is Horsepower-hour to Femtojoule Conversion?
Horsepower-hour (hp⋅h) 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 horsepower-hour to femtojoule, knowing the exact conversion formula is essential.
Hp⋅h to fj Conversion Formula:
One Horsepower-hour is equal to 2.684865e+21 Femtojoule.
Formula: 1 hp⋅h = 2.684865e+21 fJ
By using this conversion factor, you can easily convert any energy from horsepower-hour to femtojoule with precision.
Convert 1 Horsepower-hour to Femtojoule
To convert 1 horsepower-hour to femtojoule, multiply the value by 2.684865e+21 since:
1 horsepower-hour = 2.684865e+21 femtojoule
So:
1 × 2.684865e+21 = 2.684865e+21
Result: 1 horsepower-hour = 2.684865e+21 femtojoule
Reverse Conversion
Need the reverse result? You can also convert femtojoule back to horsepower-hour by dividing 2.684865e+21:
2.684865e+21 femtojoule ÷ 2.684865e+21 = 1 horsepower-hour
For more, visit: Femtojoule to Horsepower-hour
Explore Related Conversion Tool
This page focuses specifically on converting 1 Horsepower-hour to Femtojoule. If you're looking to convert a different value, you can use our general conversion tool:
Frequently Asked Questions
What is 1 horsepower-hour in femtojoule?
1 horsepower-hour is equal to 2.684865e+21 femtojoule.
How do I convert horsepower-hour to femtojoule?
Multiply the value in horsepower-hour by 2.684865e+21 to get the equivalent in femtojoule.