Convert 1 Joule to Kilojoule (1 J to kJ)
Looking to convert 1 joule (J) to kilojoule (kJ)? 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 Kilojoule and how to calculate conversions manually or using online tools.

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