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

Looking to convert 1 horsepower-hour (hp⋅h) to millijoule (mJ)? 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 Millijoule and how to calculate conversions manually or using online tools.
What is Horsepower-hour to Millijoule Conversion?
Horsepower-hour (hp⋅h) and millijoule (mJ) 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 millijoule, knowing the exact conversion formula is essential.
Hp⋅h to mj Conversion Formula:
One Horsepower-hour is equal to 2.684865e+9 Millijoule.
Formula: 1 hp⋅h = 2.684865e+9 mJ
By using this conversion factor, you can easily convert any energy from horsepower-hour to millijoule with precision.
Convert 1 Horsepower-hour to Millijoule
To convert 1 horsepower-hour to millijoule, multiply the value by 2.684865e+9 since:
1 horsepower-hour = 2.684865e+9 millijoule
So:
1 × 2.684865e+9 = 2.684865e+9
Result: 1 horsepower-hour = 2.684865e+9 millijoule
Reverse Conversion
Need the reverse result? You can also convert millijoule back to horsepower-hour by dividing 2.684865e+9:
2.684865e+9 millijoule ÷ 2.684865e+9 = 1 horsepower-hour
For more, visit: Millijoule to Horsepower-hour
Explore Related Conversion Tool
This page focuses specifically on converting 1 Horsepower-hour to Millijoule. 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 millijoule?
1 horsepower-hour is equal to 2.684865e+9 millijoule.
How do I convert horsepower-hour to millijoule?
Multiply the value in horsepower-hour by 2.684865e+9 to get the equivalent in millijoule.