A petajoule (PJ) is a metric-prefixed unit of energy equal to 1015 joules, using the SI peta prefix.
Petajoules to Decijoules
Convert Petajoule (PJ) to Decijoule (dJ) instantly with an exact formula, conversion table, and FAQ.
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Convert petajoules (PJ) to decijoules (dJ) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
A decijoule (dJ) is a metric-prefixed unit of energy equal to 10-1 joules, a fraction of a single joule, using the SI deci prefix.
dJ = PJ × 1.000000000e+16
Results update instantly for Petajoules to Decijoules conversions.
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Formula
dJ = PJ × 1.000000000e+16
PJ = dJ × 1.000000000e-16
Conversion table
| 1 PJ | 1.000000e+16 dJ |
| 5 PJ | 5.000000e+16 dJ |
| 10 PJ | 1.000000e+17 dJ |
| 20 PJ | 2.000000e+17 dJ |
| 50 PJ | 5.000000e+17 dJ |
| 100 PJ | 1.000000e+18 dJ |
| 500 PJ | 5.000000e+18 dJ |
| 1000 PJ | 1.000000e+19 dJ |
Related conversions
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How the formula works
Both petajoule and decijoule measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in petajoules by 1.000000000e+16 to get decijoules. To reverse the conversion, multiply a decijoule value by 1.000000000e-16 to get back to petajoules.
Frequently asked questions
What is Petajoule (PJ)?
A petajoule (PJ) is a metric-prefixed unit of energy equal to 1015 joules, using the SI peta prefix.
What is Decijoule (dJ)?
A decijoule (dJ) is a metric-prefixed unit of energy equal to 10-1 joules, a fraction of a single joule, using the SI deci prefix.
How do I convert petajoules to decijoules?
Multiply the petajoule value by 1.000000000e+16 to get the equivalent in decijoules. For example, 5 PJ × 1.000000000e+16 = 5.000000e+16 dJ.
Is this conversion exact?
Yes. Both units are defined against the SI base unit for this dimension, so the factor 1.000000000e+16 is an exact, non-rounded value.
Can I convert decijoules back to petajoules?
Yes. Divide the decijoule value by 1.000000000e+16, or multiply it by 1.000000000e-16, to get petajoules.
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About converting petajoules to decijoules
A petajoule (PJ) is a metric-prefixed unit of energy equal to 1015 joules, using the SI peta prefix. A decijoule (dJ) is a metric-prefixed unit of energy equal to 10-1 joules, a fraction of a single joule, using the SI deci prefix.
Use this calculator to move between petajoules and decijoules accurately for homework, engineering, billing, or everyday energy calculations. The Universal Converter uses exact unit factors, so results stay consistent across the site.