Table Of Contents
Megajoule to kilojoules Conversion
1 megajoule (MJ) is equal to 1000 kilojoules (kJ).
1 MJ = 1000 kJ
or
1 kJ = 0.001 MJ
Formula
To convert a energy from megajoule (MJ) to kilojoules (kJ), multiply the energy in megajoule by 1000
e(kJ) = e(MJ) × 1000
Examples:
Convert 50 megajoule to kilojoules:
e(kJ) = 50MJ × 1000 = 50000 kJ
Conversion table
| Megajoule (MJ) | Kilojoules (kJ) |
|---|---|
| 1 MJ | 1000 kJ |
| 2 MJ | 2000 kJ |
| 3 MJ | 3000 kJ |
| 5 MJ | 5000 kJ |
| 10 MJ | 10000 kJ |
| 20 MJ | 20000 kJ |
| 25 MJ | 25000 kJ |
| 50 MJ | 50000 kJ |
| 100 MJ | 100000 kJ |
| 250 MJ | 250000 kJ |
| 500 MJ | 500000 kJ |
| 1000 MJ | 1000000 kJ |
| Kilojoules (kJ) | Megajoule (MJ) |
|---|---|
| 1 kJ | 0.001 MJ |
| 2 kJ | 0.002 MJ |
| 3 kJ | 0.003 MJ |
| 5 kJ | 0.005 MJ |
| 10 kJ | 0.01 MJ |
| 20 kJ | 0.02 MJ |
| 25 kJ | 0.025 MJ |
| 50 kJ | 0.05 MJ |
| 100 kJ | 0.1 MJ |
| 250 kJ | 0.25 MJ |
| 500 kJ | 0.5 MJ |
| 1000 kJ | 1 MJ |
Frequently asked questions
How do I convert megajoule to kilojoules?
Multiply the value in megajoule by 1000 to get the result in kilojoules. For example, 5 MJ × 1000 = 5000 kJ.
How many kilojoules are in 1 megajoule?
1 megajoule (MJ) is equal to 1000 kilojoules (kJ).
How do I convert kilojoules back to megajoule?
Use the inverse operation: divide the value in kilojoules by 1000 to get the result in megajoule.
How accurate is the megajoule to kilojoules conversion?
The converter multiplies by the conversion factor 1000 and rounds the result to 9 decimal places by default. You can increase or reduce the precision with the digits option on this page.
Sources
Conversion factors are based on internationally recognised standards:
- BIPM — The International System of Units (SI Brochure, 9th edition)
- NIST Guide to the SI, Appendix B.8: Factors for Units Listed Alphabetically (NIST SP 811, 2008 edition)
- NIST Guide to the SI (SP 811), Footnotes (notes 22 and 23)
- CODATA Value: electron volt-joule relationship (NIST Fundamental Physical Constants)