Hectojoule is 100 joule units.
Hectojoules to Microjoules Converter — hJ to uJ
Convert Hectojoule (hJ) to Microjoule (uJ) using the exact conversion factor (1 hectojoule = 100,000,000 microjoule). See the formula, worked examples, and conversion table.
Hectojoules to Microjoules 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.
Microjoule is 0.000001 joule units.
Result = input x 100 / 1e-6.
Energy uses the joule as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Hectojoules to Microjoules
Hectojoule and Microjoule both measure energy, and the conversion is especially useful for comparing nutrition labels (kilocalories) against scientific energy figures (joules). Specifically: Hectojoule is 100 joule units, and microjoule is 0.000001 joule units.
Formula
microjoules = hectojoules × 100000000
This factor comes from each unit's defined relationship to the category's base unit: 1 hectojoule equals 100 base units, and 1 microjoule equals 0.000001 base units, so dividing one by the other gives the direct hectojoule-to-microjoule factor of 100000000.
Simple example
1 hJ × 100000000 = 100,000,000 uJ
1 hectojoule = 100,000,000 microjoules.
Real-world example
100 hJ × 100000000 = 10,000,000,000 uJ
100 hectojoules = 10,000,000,000 microjoules.
Conversion table
| Hectojoule (hJ) | Microjoule (uJ) |
|---|---|
| 1 hJ | 100,000,000 uJ |
| 10 hJ | 1,000,000,000 uJ |
| 100 hJ | 10,000,000,000 uJ |
| 500 hJ | 50,000,000,000 uJ |
| 1,000 hJ | 100,000,000,000 uJ |
| 2,000 hJ | 200,000,000,000 uJ |
Reverse conversion: Microjoule to Hectojoule
1 uJ × 1e-8 = 1e-8 hJ
1 microjoule = 1e-8 hectojoules.
hectojoules = microjoules × 1e-8
For a page dedicated to this direction, see Microjoule to Hectojoule.
Understanding the Hectojoule (hJ)
Hectojoule is 100 joule units.
Understanding the Microjoule (uJ)
Microjoule is 0.000001 joule units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many microjoules are in 1 hectojoule?
1 hectojoule equals 100,000,000 microjoules, using the exact defined conversion factor rather than an estimate.
How do I convert hectojoule to microjoule?
Multiply the hectojoule value by 100000000. The converter above does this instantly to whatever precision you set.
How do I convert microjoule back to hectojoule?
Use the reverse factor: 1 microjoule equals 1e-8 hectojoules. You can also use the swap control in the converter above to flip the direction instantly.
What is a hectojoule?
Hectojoule (hJ) is a unit of energy.
What is a microjoule?
Microjoule (uJ) is a unit of energy.
Is the hectojoule to microjoule conversion exact?
Yes. Both hectojoule and microjoule are defined by fixed standards rather than physical artifacts, so the factor of 100000000 used above is exact to as many digits as you choose to display.