A millijoule (mJ) is a metric-prefixed unit of energy equal to 10-3 joules, a fraction of a single joule, using the SI milli prefix.
Millijoules to Picojoules
Convert Millijoule (mJ) to Picojoule (pJ) instantly with an exact formula, conversion table, and FAQ.
Reserved for a responsive leaderboard above the conversion details.
Professional calculator style
World-scale conversion engine
30+ categories
6,500+ units
Instant results
Offline ready
Energy calculator
Energy Converter
Convert millijoules (mJ) to picojoules (pJ) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
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.
pJ = mJ × 1000000000
Results update instantly for Millijoules to Picojoules conversions.
Reserved above the conversion cards and below the converter.
Formula
pJ = mJ × 1000000000
mJ = pJ × 1.000000000e-09
Conversion table
| 1 mJ | 1.000000e+09 pJ |
| 5 mJ | 5.000000e+09 pJ |
| 10 mJ | 1.000000e+10 pJ |
| 20 mJ | 2.000000e+10 pJ |
| 50 mJ | 5.000000e+10 pJ |
| 100 mJ | 1.000000e+11 pJ |
| 500 mJ | 5.000000e+11 pJ |
| 1000 mJ | 1.000000e+12 pJ |
Related conversions
Reserved between the cards and the FAQ so the page stays balanced.
How the formula works
Both millijoule and picojoule measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in millijoules by 1000000000 to get picojoules. To reverse the conversion, multiply a picojoule value by 1.000000000e-09 to get back to millijoules.
Frequently asked questions
What is Millijoule (mJ)?
A millijoule (mJ) is a metric-prefixed unit of energy equal to 10-3 joules, a fraction of a single joule, using the SI milli prefix.
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.
How do I convert millijoules to picojoules?
Multiply the millijoule value by 1000000000 to get the equivalent in picojoules. For example, 5 mJ × 1000000000 = 5.000000e+09 pJ.
Is this conversion exact?
Yes. Both units are defined against the SI base unit for this dimension, so the factor 1000000000 is an exact, non-rounded value.
Can I convert picojoules back to millijoules?
Yes. Divide the picojoule value by 1000000000, or multiply it by 1.000000000e-09, to get millijoules.
Reserved between the FAQ and the article so the page stays balanced.
About converting millijoules to picojoules
A millijoule (mJ) is a metric-prefixed unit of energy equal to 10-3 joules, a fraction of a single joule, using the SI milli prefix. 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.
Use this calculator to move between millijoules and picojoules accurately for homework, engineering, billing, or everyday energy calculations. The Universal Converter uses exact unit factors, so results stay consistent across the site.