GIGAJOULE to MILLIJOULE converter

Precise unit converter

GJ

mJ

Units used

FULL UNIT NAME	gigajoule	millijoule
ABBREVIATION / SYMBOL	GJ	mJ

How can you convert 1 gigajoule to millijoules?

How many millijoules are in one gigajoule? You can find out the answer in one of two ways:

use our calculator above for maximum accuracy or
use the following equation:

1 GJ \times \frac{1.000000 \times 10^{12} mJ}{1 GJ}

There are 1e12 millijoules in a gigajoule. Thus, we must multiply the number of gigajoules (1) by 1e12 to get millijoules.

Conversion table between gigajoules and millijoules near 1 GJ:

Alternative spelling

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