Attowatt is 1e-18 watt units.
Attowatts to Terawatts Converter — aW to TW
Convert Attowatt (aW) to Terawatt (TW) using the exact conversion factor (1 attowatt = 1e-30 terawatt). See the formula, worked examples, and conversion table.
Attowatts to Terawatts converter
Converter
Electricity Converter
Convert electrical units by family and calculate voltage, current, resistance, power, and energy with context values.
Context values
Some unit families need one extra value for a physically accurate result.
Terawatt is 1000000000000 watt units.
Result = input x 1e-18 / 1e+12.
Electrical units in the same family convert directly.
Reserved above the conversion cards and below the converter.
About Converting Attowatts to Terawatts
Attowatt and Terawatt both belong to the electricity family — voltage, current, resistance, power, or energy — units that show up constantly when working across the different standards used by household wiring (120V/240V depending on region), automotive electrical systems (12V/24V), and electronics design. Specifically: Attowatt is 1e-18 watt units, and terawatt is 1000000000000 watt units.
Formula
terawatts = attowatts × 1e-30
This factor comes from each unit's defined relationship to the category's base unit: 1 attowatt equals 1e-18 base units, and 1 terawatt equals 1e+12 base units, so dividing one by the other gives the direct attowatt-to-terawatt factor of 1e-30.
Simple example
1 aW × 1e-30 = 1e-30 TW
1 attowatt = 1e-30 terawatts.
Real-world example
120 aW × 1e-30 = 1.2e-28 TW
120 attowatts = 1.2e-28 terawatts.
Conversion table
| Attowatt (aW) | Terawatt (TW) |
|---|---|
| 1 aW | 1e-30 TW |
| 5 aW | 5e-30 TW |
| 12 aW | 1.2e-29 TW |
| 24 aW | 2.4e-29 TW |
| 120 aW | 1.2e-28 TW |
| 240 aW | 2.4e-28 TW |
Reverse conversion: Terawatt to Attowatt
1e-30 TW × 1e+30 = 1 aW
1e-30 terawatts = 1 attowatt.
attowatts = terawatts × 1e+30
For a page dedicated to this direction, see Terawatt to Attowatt.
Understanding the Attowatt (aW)
Attowatt is 1e-18 watt units.
Understanding the Terawatt (TW)
Terawatt is 1000000000000 watt units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many terawatts are in 1 attowatt?
1 attowatt equals 1e-30 terawatts, using the exact defined conversion factor rather than an estimate.
How do I convert attowatt to terawatt?
Multiply the attowatt value by 1e-30. The converter above does this instantly to whatever precision you set.
How do I convert terawatt back to attowatt?
Use the reverse factor: 1 terawatt equals 1e+30 attowatts. You can also use the swap control in the converter above to flip the direction instantly.
What is a attowatt?
Attowatt (aW) is a unit of electricity.
What is a terawatt?
Terawatt (TW) is a unit of electricity.
Is the attowatt to terawatt conversion exact?
Yes. Both attowatt and terawatt are defined by fixed standards rather than physical artifacts, so the factor of 1e-30 used above is exact to as many digits as you choose to display.
What's the difference between voltage, current, and resistance?
Voltage (volts) is the electrical potential difference driving current through a circuit. Current (amperes) is the rate of flow of electric charge. Resistance (ohms) is how much a component opposes that flow. They're related by Ohm's law (V = I × R), but they are distinct physical quantities, and this page converts between units of just one of them.