Convert 21 Gigajoules to Joules

21 Gigajoules (GJ)
1 GJ = 1,000,000,000 J
=
21,000,000,000 Joules (J)
1 J = 1.0e-09 GJ

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More information from the unit converter

Q: How many Gigajoules in a Joule?

The answer is 1.0e-09 Joule

Q: How do you convert 21 Gigajoule (GJ) to Joule (J)?

21 Gigajoule is equal to 21,000,000,000 Joule. Formula to convert 21 GJ to J is 21 * 1000000000

Q: How many Gigajoules in 21 Joules?

The answer is 2.1e-08 Gigajoules