Yoctowatt is 1e-24 watt units.
Yoctowatts to Petawatts Converter — yW to PW
Convert Yoctowatt (yW) to Petawatt (PW) using the exact conversion factor (1 yoctowatt = 1e-39 petawatt). See the formula, worked examples, and conversion table.
Yoctowatts to Petawatts 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.
Petawatt is 1000000000000000 watt units.
Result = input x 1e-24 / 1e+15.
Electrical units in the same family convert directly.
Reserved above the conversion cards and below the converter.
About Converting Yoctowatts to Petawatts
Yoctowatt and Petawatt 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: Yoctowatt is 1e-24 watt units, and petawatt is 1000000000000000 watt units.
Formula
petawatts = yoctowatts × 1e-39
This factor comes from each unit's defined relationship to the category's base unit: 1 yoctowatt equals 1e-24 base units, and 1 petawatt equals 1e+15 base units, so dividing one by the other gives the direct yoctowatt-to-petawatt factor of 1e-39.
Simple example
1 yW × 1e-39 = 1e-39 PW
1 yoctowatt = 1e-39 petawatts.
Real-world example
120 yW × 1e-39 = 1.2e-37 PW
120 yoctowatts = 1.2e-37 petawatts.
Conversion table
| Yoctowatt (yW) | Petawatt (PW) |
|---|---|
| 1 yW | 1e-39 PW |
| 5 yW | 5e-39 PW |
| 12 yW | 1.2e-38 PW |
| 24 yW | 2.4e-38 PW |
| 120 yW | 1.2e-37 PW |
| 240 yW | 2.4e-37 PW |
Reverse conversion: Petawatt to Yoctowatt
1e-39 PW × 1e+39 = 1 yW
1e-39 petawatts = 1 yoctowatt.
yoctowatts = petawatts × 1e+39
For a page dedicated to this direction, see Petawatt to Yoctowatt.
Understanding the Yoctowatt (yW)
Yoctowatt is 1e-24 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 yoctowatt?
1 yoctowatt equals 1e-39 petawatts, using the exact defined conversion factor rather than an estimate.
How do I convert yoctowatt to petawatt?
Multiply the yoctowatt value by 1e-39. The converter above does this instantly to whatever precision you set.
How do I convert petawatt back to yoctowatt?
Use the reverse factor: 1 petawatt equals 1e+39 yoctowatts. You can also use the swap control in the converter above to flip the direction instantly.
What is a yoctowatt?
Yoctowatt (yW) is a unit of electricity.
What is a petawatt?
Petawatt (PW) is a unit of electricity.
Is the yoctowatt to petawatt conversion exact?
Yes. Both yoctowatt and petawatt are defined by fixed standards rather than physical artifacts, so the factor of 1e-39 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.