Terawatt is 1000000000000 watt units.
Terawatts to Petawatts Converter — TW to PW
Convert Terawatt (TW) to Petawatt (PW) using the exact conversion factor (1 terawatt = 0.001 petawatt). See the formula, worked examples, and conversion table.
Terawatts to Petawatts converter
Converter
Power Converter
Convert watts, horsepower, refrigeration tons, BTU per hour, and engineering power units.
Context values
Some unit families need one extra value for a physically accurate result.
Petawatt is 1000000000000000 watt units.
Result = input x 1e+12 / 1e+15.
Power uses the watt as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Terawatts to Petawatts
Terawatt and Petawatt both describe power output, and the conversion is a routine part of comparing an engine or motor's spec sheet across countries that use different power units. Specifically: Terawatt is 1000000000000 watt units, and petawatt is 1000000000000000 watt units.
Formula
petawatts = terawatts × 0.001
This factor comes from each unit's defined relationship to the category's base unit: 1 terawatt equals 1e+12 base units, and 1 petawatt equals 1e+15 base units, so dividing one by the other gives the direct terawatt-to-petawatt factor of 0.001.
Simple example
1 TW × 0.001 = 0.001 PW
1 terawatt = 0.001 petawatts.
Real-world example
100 TW × 0.001 = 0.1 PW
100 terawatts = 0.1 petawatts.
Conversion table
| Terawatt (TW) | Petawatt (PW) |
|---|---|
| 1 TW | 0.001 PW |
| 10 TW | 0.01 PW |
| 100 TW | 0.1 PW |
| 500 TW | 0.5 PW |
| 1,000 TW | 1 PW |
| 5,000 TW | 5 PW |
Reverse conversion: Petawatt to Terawatt
0.001 PW × 1000 = 1 TW
0.001 petawatts = 1 terawatt.
terawatts = petawatts × 1000
For a page dedicated to this direction, see Petawatt to Terawatt.
Understanding the Terawatt (TW)
Terawatt is 1000000000000 watt units.
Understanding the Petawatt (PW)
Petawatt is 1000000000000000 watt units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many petawatts are in 1 terawatt?
1 terawatt equals 0.001 petawatts, using the exact defined conversion factor rather than an estimate.
How do I convert terawatt to petawatt?
Multiply the terawatt value by 0.001. The converter above does this instantly to whatever precision you set.
How do I convert petawatt back to terawatt?
Use the reverse factor: 1 petawatt equals 1,000 terawatts. You can also use the swap control in the converter above to flip the direction instantly.
What is a terawatt?
Terawatt (TW) is a unit of power.
What is a petawatt?
Petawatt (PW) is a unit of power.
Is the terawatt to petawatt conversion exact?
Yes. Both terawatt and petawatt are defined by fixed standards rather than physical artifacts, so the factor of 0.001 used above is exact to as many digits as you choose to display.