Converter group

Common Converters

Energy Converter

Value

From

Result

... Millijoule = ... Joule

Result

... Millijoule

... Joule

Value

FromTo

From Unit:

To Unit:

Use this page to convert millijoule values into joule, with background details, formulas, a worked example, and a quick conversion table.

1 mJ = 0.001 J

1 J = 1,000 mJ

Example: 120 mJ = 0.12 J

Millijoule (mJ) is represented in this converter as 0.001 joules.

History: Millijoule follows SI prefix conventions for scaling joules up or down by powers of ten.

Current use: Millijoule is useful in science, engineering, and technical energy comparisons.

Also written as mJ.

A joule is the work done by a force of one newton through one meter.

History: It is named after James Prescott Joule.

Current use: Joules are used in physics, engineering, and energy calculations.

Also written as J, joules.