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

Looking to convert 1 millijoule (mJ) to joule (J)? This page provides the accurate result and a detailed explanation of how the conversion is done. Use this information to understand the relationship between Millijoule and Joule and how to calculate conversions manually or using online tools.
What is Millijoule to Joule Conversion?
Millijoule (mJ) and joule (J) 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 millijoule to joule, knowing the exact conversion formula is essential.
MJ to j Conversion Formula:
One Millijoule is equal to 0.001 Joule.
Formula: 1 mJ = 0.001 J
By using this conversion factor, you can easily convert any energy from millijoule to joule with precision.
Convert 1 Millijoule to Joule
To convert 1 millijoule to joule, multiply the value by 0.001 since:
1 millijoule = 0.001 joule
So:
1 × 0.001 = 0.001
Result: 1 millijoule = 0.001 joule
Reverse Conversion
Need the reverse result? You can also convert joule back to millijoule by dividing 0.001:
0.001 joule ÷ 0.001 = 1 millijoule
For more, visit: Joule to Millijoule
Explore Related Conversion Tool
This page focuses specifically on converting 1 Millijoule to Joule. If you're looking to convert a different value, you can use our general conversion tool:
Frequently Asked Questions
What is 1 millijoule in joule?
1 millijoule is equal to 0.001 joule.
How do I convert millijoule to joule?
Multiply the value in millijoule by 0.001 to get the equivalent in joule.