Megajoule is 1000000 joule units.
Megajoules to Terajoules Converter — MJ to TJ
Convert Megajoule (MJ) to Terajoule (TJ) using the exact conversion factor (1 megajoule = 0.000001 terajoule). See the formula, worked examples, and conversion table.
Megajoules to Terajoules 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.
Terajoule is 1000000000000 joule units.
Result = input x 1e+6 / 1e+12.
Energy uses the joule as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Megajoules to Terajoules
Megajoule and Terajoule both measure energy, and the conversion is especially useful for comparing nutrition labels (kilocalories) against scientific energy figures (joules). Specifically: Megajoule is 1000000 joule units, and terajoule is 1000000000000 joule units.
Formula
terajoules = megajoules × 0.000001
This factor comes from each unit's defined relationship to the category's base unit: 1 megajoule equals 1000000 base units, and 1 terajoule equals 1e+12 base units, so dividing one by the other gives the direct megajoule-to-terajoule factor of 0.000001.
Simple example
1 MJ × 0.000001 = 0.000001 TJ
1 megajoule = 0.000001 terajoules.
Real-world example
100 MJ × 0.000001 = 0.0001 TJ
100 megajoules = 0.0001 terajoules.
Conversion table
| Megajoule (MJ) | Terajoule (TJ) |
|---|---|
| 1 MJ | 0.000001 TJ |
| 10 MJ | 0.00001 TJ |
| 100 MJ | 0.0001 TJ |
| 500 MJ | 0.0005 TJ |
| 1,000 MJ | 0.001 TJ |
| 2,000 MJ | 0.002 TJ |
Reverse conversion: Terajoule to Megajoule
0.000001 TJ × 1000000 = 1 MJ
0.000001 terajoules = 1 megajoule.
megajoules = terajoules × 1000000
For a page dedicated to this direction, see Terajoule to Megajoule.
Understanding the Megajoule (MJ)
Megajoule is 1000000 joule units.
Understanding the Terajoule (TJ)
Terajoule is 1000000000000 joule units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many terajoules are in 1 megajoule?
1 megajoule equals 0.000001 terajoules, using the exact defined conversion factor rather than an estimate.
How do I convert megajoule to terajoule?
Multiply the megajoule value by 0.000001. The converter above does this instantly to whatever precision you set.
How do I convert terajoule back to megajoule?
Use the reverse factor: 1 terajoule equals 1,000,000 megajoules. You can also use the swap control in the converter above to flip the direction instantly.
What is a megajoule?
Megajoule (MJ) is a unit of energy.
What is a terajoule?
Terajoule (TJ) is a unit of energy.
Is the megajoule to terajoule conversion exact?
Yes. Both megajoule and terajoule are defined by fixed standards rather than physical artifacts, so the factor of 0.000001 used above is exact to as many digits as you choose to display.