Converter group

Common Converters

Energy Converter

Value

From

Result

... Millijoule = ... Kilojoule

Result

... Millijoule

... Kilojoule

Value

FromTo

From Unit:

To Unit:

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

1 mJ = 0.000001 kJ

1 kJ = 1,000,000 mJ

Example: 120 mJ = 0.00012 kJ

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 kilojoule equals 1,000 joules.

History: It is a decimal multiple adopted for practical energy values.

Current use: Kilojoules are used in nutrition and industrial energy figures.

Also written as kJ, kilojoules.