A picojoule (pJ) is a metric-prefixed unit of energy equal to 10-12 joules, a fraction of a single joule, using the SI pico prefix.
Picojoules to Megajoules
Convert Picojoule (pJ) to Megajoule (MJ) instantly with an exact formula, conversion table, and FAQ.
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Convert picojoules (pJ) to megajoules (MJ) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
A megajoule (MJ) is a metric-prefixed unit of energy equal to 106 joules, using the SI mega prefix.
MJ = pJ × 1.000000000e-18
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Formula
MJ = pJ × 1.000000000e-18
pJ = MJ × 1.000000000e+18
Conversion table
| 1 pJ | 1.000000e-18 MJ |
| 5 pJ | 5.000000e-18 MJ |
| 10 pJ | 1.000000e-17 MJ |
| 20 pJ | 2.000000e-17 MJ |
| 50 pJ | 5.000000e-17 MJ |
| 100 pJ | 1.000000e-16 MJ |
| 500 pJ | 5.000000e-16 MJ |
| 1000 pJ | 1.000000e-15 MJ |
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How the formula works
Both picojoule and megajoule measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in picojoules by 1.000000000e-18 to get megajoules. To reverse the conversion, multiply a megajoule value by 1.000000000e+18 to get back to picojoules.
Frequently asked questions
What is Picojoule (pJ)?
A picojoule (pJ) is a metric-prefixed unit of energy equal to 10-12 joules, a fraction of a single joule, using the SI pico prefix.
What is Megajoule (MJ)?
A megajoule (MJ) is a metric-prefixed unit of energy equal to 106 joules, using the SI mega prefix.
How do I convert picojoules to megajoules?
Multiply the picojoule value by 1.000000000e-18 to get the equivalent in megajoules. For example, 5 pJ × 1.000000000e-18 = 5.000000e-18 MJ.
Is this conversion exact?
Yes. Both units are defined against the SI base unit for this dimension, so the factor 1.000000000e-18 is an exact, non-rounded value.
Can I convert megajoules back to picojoules?
Yes. Divide the megajoule value by 1.000000000e-18, or multiply it by 1.000000000e+18, to get picojoules.
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About converting picojoules to megajoules
A picojoule (pJ) is a metric-prefixed unit of energy equal to 10-12 joules, a fraction of a single joule, using the SI pico prefix. A megajoule (MJ) is a metric-prefixed unit of energy equal to 106 joules, using the SI mega prefix.
Use this calculator to move between picojoules and megajoules accurately for homework, engineering, billing, or everyday energy calculations. The Universal Converter uses exact unit factors, so results stay consistent across the site.