Picojoule is 1e-12 joule units.
Picojoules to Quettajoules Converter — pJ to QJ
Convert Picojoule (pJ) to Quettajoule (QJ) using the exact conversion factor (1 picojoule = 1e-42 quettajoule). See the formula, worked examples, and conversion table.
Picojoules to Quettajoules converter
Converter
Energy Converter
Convert joules, calories, kilowatt-hours, BTU, electronvolts, therms, and mechanical work units.
Context values
Some unit families need one extra value for a physically accurate result.
Quettajoule is 1e+30 joule units.
Result = input x 1e-12 / 1e+30.
Energy uses the joule as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Picojoules to Quettajoules
Picojoule and Quettajoule both measure energy, and the conversion is especially useful for comparing nutrition labels (kilocalories) against scientific energy figures (joules). Specifically: Picojoule is 1e-12 joule units, and quettajoule is 1e+30 joule units.
Formula
quettajoules = picojoules × 1e-42
This factor comes from each unit's defined relationship to the category's base unit: 1 picojoule equals 1e-12 base units, and 1 quettajoule equals 1e+30 base units, so dividing one by the other gives the direct picojoule-to-quettajoule factor of 1e-42.
Simple example
1 pJ × 1e-42 = 1e-42 QJ
1 picojoule = 1e-42 quettajoules.
Real-world example
100 pJ × 1e-42 = 1e-40 QJ
100 picojoules = 1e-40 quettajoules.
Conversion table
| Picojoule (pJ) | Quettajoule (QJ) |
|---|---|
| 1 pJ | 1e-42 QJ |
| 10 pJ | 1e-41 QJ |
| 100 pJ | 1e-40 QJ |
| 500 pJ | 5e-40 QJ |
| 1,000 pJ | 1e-39 QJ |
| 2,000 pJ | 2e-39 QJ |
Reverse conversion: Quettajoule to Picojoule
1e-42 QJ × 1e+42 = 1 pJ
1e-42 quettajoules = 1 picojoule.
picojoules = quettajoules × 1e+42
For a page dedicated to this direction, see Quettajoule to Picojoule.
Understanding the Picojoule (pJ)
Picojoule is 1e-12 joule units.
Understanding the Quettajoule (QJ)
Quettajoule is 1e+30 joule units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many quettajoules are in 1 picojoule?
1 picojoule equals 1e-42 quettajoules, using the exact defined conversion factor rather than an estimate.
How do I convert picojoule to quettajoule?
Multiply the picojoule value by 1e-42. The converter above does this instantly to whatever precision you set.
How do I convert quettajoule back to picojoule?
Use the reverse factor: 1 quettajoule equals 1e+42 picojoules. You can also use the swap control in the converter above to flip the direction instantly.
What is a picojoule?
Picojoule (pJ) is a unit of energy.
What is a quettajoule?
Quettajoule (QJ) is a unit of energy.
Is the picojoule to quettajoule conversion exact?
Yes. Both picojoule and quettajoule are defined by fixed standards rather than physical artifacts, so the factor of 1e-42 used above is exact to as many digits as you choose to display.