1 mJ = 0.001 J exactly. Lowercase m is milli; MJ (megajoule) is a billion times larger.
Definition
- Dimension
- Energy
- Symbols
- mJ
- System
- SI
- Base factor
- ×0.001
- Exactness
- exact
Follows from an SI or definitional identity — no material assumption.
Also known as
millijoules
Sources
Common conversions
for 1 mJ| joule | 0.001 | J | exact |
| kilojoule | 0.000001 | kJ | exact |
| megajoule | 0.000000001 | MJ | exact |
| gigajoule | 0.000000000001 | GJ | exact |
| kilowatt hour | ~0.000000000277778 | kWh | exact |
| megawatt hour | ~0.000000000000277778 | MWh | exact |
| British thermal unit | ~0.000000947817 | BTU | standard definition |
| million British thermal units | ~0.000000000000947817 | MMBTU | standard definition |
| therm (US) | ~0.00000000000947817 | therm | standard definition |
| tonne of oil equivalent | ~0.0000000000000238846 | toe | standard definition |