Joule to Millijoule Converter
Quick Answer
1 J = 1000 mJ
Formula: Millijoule = Joule x 1000
Formula verifiedLive calculation
To (Millijoule)
mJ
Quick values
Joule to Millijoule Conversion Table
| Joule (J) | Millijoule (mJ) |
|---|---|
| 1 | 1000 |
| 2 | 2000 |
| 3 | 3000 |
| 4 | 4000 |
| 5 | 5000 |
| 6 | 6000 |
| 7 | 7000 |
| 8 | 8000 |
| 9 | 9000 |
| 10 | 10000 |
Convert Joule to Other Energy Units
Joule to Watt HourJoule to Ton of TNTJoule to Ton of Oil EquivalentJoule to Ton of Coal EquivalentJoule to Therm (US)Joule to Therm (EC)Joule to ThermJoule to Terawatt HourJoule to TerajouleJoule to Teraelectron VoltJoule to RydbergJoule to Quintillion BTUJoule to Quadrillion BTUJoule to Planck EnergyJoule to PicojouleJoule to PetajouleJoule to Newton MeterJoule to NanojouleJoule to Milliwatt HourJoule to MillijouleJoule to MillicalorieJoule to Microwatt HourJoule to MicrojouleJoule to Megawatt HourJoule to Megaton of TNTJoule to MegajouleJoule to Megaelectron VoltJoule to MegacalorieJoule to Liter-AtmosphereJoule to Kilowatt HourJoule to Kiloton of TNTJoule to KilojouleJoule to Kiloelectron VoltJoule to KilocalorieJoule to Inch-PoundJoule to Inch-OunceJoule to Horsepower HourJoule to HartreeJoule to Gram-Force MeterJoule to Gigawatt HourJoule to GigajouleJoule to Gigaelectron VoltJoule to Foot-PoundalJoule to Foot-PoundJoule to FemtojouleJoule to ExajouleJoule to ErgJoule to Electron VoltJoule to Dyne CentimeterJoule to Cubic Foot of Natural GasJoule to CalorieJoule to British Thermal UnitJoule to Barrel of Oil EquivalentJoule to Attojoule
Frequently Asked Questions
How do you convert Joule to Millijoule?
Use the formula Millijoule = Joule x 1000. For example: 1 J = 1000 mJ. Our calculator handles this automatically.
How many Millijoules in a Joule?
1 J = 1000 mJ.
Why would I need to convert Joule to Millijoule?
Converting Joule to Millijoule is useful for scientific calculations, engineering projects, international trade, and everyday measurements where different unit systems are used.
Energy reference calculator
Reference factors
1000
mJ per J
0.001
J per mJ
Contents
Formula audit
Millijoule = Joule x 1000
1 J = 1000 mJ
Results use the shared conversion engine and retain the full conversion rule before display formatting.
Unit reference
CategoryEnergy
Input unitJoule (J)
Output unitMillijoule (mJ)