Petawatt is 1000000000000000 watt units.
Petawatts to Yoctowatts Converter — PW to yW
Convert Petawatt (PW) to Yoctowatt (yW) using the exact conversion factor (1 petawatt = 1e+39 yoctowatt). See the formula, worked examples, and conversion table.
Petawatts to Yoctowatts 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.
Yoctowatt is 1e-24 watt units.
Result = input x 1e+15 / 1e-24.
Electrical units in the same family convert directly.
Reserved above the conversion cards and below the converter.
About Converting Petawatts to Yoctowatts
Petawatt and Yoctowatt 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: Petawatt is 1000000000000000 watt units, and yoctowatt is 1e-24 watt units.
Formula
yoctowatts = petawatts × 1e+39
This factor comes from each unit's defined relationship to the category's base unit: 1 petawatt equals 1e+15 base units, and 1 yoctowatt equals 1e-24 base units, so dividing one by the other gives the direct petawatt-to-yoctowatt factor of 1e+39.
Simple example
1 PW × 1e+39 = 1e+39 yW
1 petawatt = 1e+39 yoctowatts.
Real-world example
120 PW × 1e+39 = 1.2e+41 yW
120 petawatts = 1.2e+41 yoctowatts.
Conversion table
| Petawatt (PW) | Yoctowatt (yW) |
|---|---|
| 1 PW | 1e+39 yW |
| 5 PW | 5e+39 yW |
| 12 PW | 1.2e+40 yW |
| 24 PW | 2.4e+40 yW |
| 120 PW | 1.2e+41 yW |
| 240 PW | 2.4e+41 yW |
Reverse conversion: Yoctowatt to Petawatt
1e+39 yW × 1e-39 = 1 PW
1e+39 yoctowatts = 1 petawatts.
petawatts = yoctowatts × 1e-39
For a page dedicated to this direction, see Yoctowatt to Petawatt.
Understanding the Petawatt (PW)
Petawatt is 1000000000000000 watt units.
Understanding the Yoctowatt (yW)
Yoctowatt is 1e-24 watt units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many yoctowatts are in 1 petawatt?
1 petawatt equals 1e+39 yoctowatts, using the exact defined conversion factor rather than an estimate.
How do I convert petawatt to yoctowatt?
Multiply the petawatt value by 1e+39. The converter above does this instantly to whatever precision you set.
How do I convert yoctowatt back to petawatt?
Use the reverse factor: 1 yoctowatt equals 1e-39 petawatts. You can also use the swap control in the converter above to flip the direction instantly.
What is a petawatt?
Petawatt (PW) is a unit of electricity.
What is a yoctowatt?
Yoctowatt (yW) is a unit of electricity.
Is the petawatt to yoctowatt conversion exact?
Yes. Both petawatt and yoctowatt 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.