A yottajoule (YJ) is a metric-prefixed unit of energy equal to 1024 joules, using the SI yotta prefix.
Yottajoules to Gigajoules
Convert Yottajoule (YJ) to Gigajoule (GJ) instantly with an exact formula, conversion table, and FAQ.
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Convert yottajoules (YJ) 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 = YJ × 1.000000000e+15
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Formula
GJ = YJ × 1.000000000e+15
YJ = GJ × 1.000000000e-15
Conversion table
| 1 YJ | 1.000000e+15 GJ |
| 5 YJ | 5.000000e+15 GJ |
| 10 YJ | 1.000000e+16 GJ |
| 20 YJ | 2.000000e+16 GJ |
| 50 YJ | 5.000000e+16 GJ |
| 100 YJ | 1.000000e+17 GJ |
| 500 YJ | 5.000000e+17 GJ |
| 1000 YJ | 1.000000e+18 GJ |
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How the formula works
Both yottajoule and gigajoule measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in yottajoules by 1.000000000e+15 to get gigajoules. To reverse the conversion, multiply a gigajoule value by 1.000000000e-15 to get back to yottajoules.
Frequently asked questions
What is Yottajoule (YJ)?
A yottajoule (YJ) is a metric-prefixed unit of energy equal to 1024 joules, using the SI yotta 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 yottajoules to gigajoules?
Multiply the yottajoule value by 1.000000000e+15 to get the equivalent in gigajoules. For example, 5 YJ × 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 yottajoules?
Yes. Divide the gigajoule value by 1.000000000e+15, or multiply it by 1.000000000e-15, to get yottajoules.
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About converting yottajoules to gigajoules
A yottajoule (YJ) is a metric-prefixed unit of energy equal to 1024 joules, using the SI yotta 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 yottajoules 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.