A microjoule (uJ) is a metric-prefixed unit of energy equal to 10-6 joules, a fraction of a single joule, using the SI micro prefix.
Microjoules to Gigajoules
Convert Microjoule (uJ) to Gigajoule (GJ) instantly with an exact formula, conversion table, and FAQ.
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Convert microjoules (uJ) to gigajoules (GJ) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
A gigajoule (GJ) is a metric-prefixed unit of energy equal to 109 joules, using the SI giga prefix.
GJ = uJ × 1.000000000e-15
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Formula
GJ = uJ × 1.000000000e-15
uJ = GJ × 1.000000000e+15
Conversion table
| 1 uJ | 1.000000e-15 GJ |
| 5 uJ | 5.000000e-15 GJ |
| 10 uJ | 1.000000e-14 GJ |
| 20 uJ | 2.000000e-14 GJ |
| 50 uJ | 5.000000e-14 GJ |
| 100 uJ | 1.000000e-13 GJ |
| 500 uJ | 5.000000e-13 GJ |
| 1000 uJ | 1.000000e-12 GJ |
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How the formula works
Both microjoule and gigajoule measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in microjoules by 1.000000000e-15 to get gigajoules. To reverse the conversion, multiply a gigajoule value by 1.000000000e+15 to get back to microjoules.
Frequently asked questions
What is Microjoule (uJ)?
A microjoule (uJ) is a metric-prefixed unit of energy equal to 10-6 joules, a fraction of a single joule, using the SI micro prefix.
What is Gigajoule (GJ)?
A gigajoule (GJ) is a metric-prefixed unit of energy equal to 109 joules, using the SI giga prefix.
How do I convert microjoules to gigajoules?
Multiply the microjoule value by 1.000000000e-15 to get the equivalent in gigajoules. For example, 5 uJ × 1.000000000e-15 = 5.000000e-15 GJ.
Is this conversion exact?
Yes. Both units are defined against the SI base unit for this dimension, so the factor 1.000000000e-15 is an exact, non-rounded value.
Can I convert gigajoules back to microjoules?
Yes. Divide the gigajoule value by 1.000000000e-15, or multiply it by 1.000000000e+15, to get microjoules.
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About converting microjoules to gigajoules
A microjoule (uJ) is a metric-prefixed unit of energy equal to 10-6 joules, a fraction of a single joule, using the SI micro prefix. A gigajoule (GJ) is a metric-prefixed unit of energy equal to 109 joules, using the SI giga prefix.
Use this calculator to move between microjoules and gigajoules accurately for homework, engineering, billing, or everyday energy calculations. The Universal Converter uses exact unit factors, so results stay consistent across the site.