Convert 1 Millijoule to Exajoule (1 mJ to EJ)
Looking to convert 1 millijoule (mJ) to exajoule (EJ)? 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 Exajoule and how to calculate conversions manually or using online tools.

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