Petawatt is 1000000000000000 watt units.
Petawatts to Attowatts Converter — PW to aW
Convert Petawatt (PW) to Attowatt (aW) using the exact conversion factor (1 petawatt = 1e+33 attowatt). See the formula, worked examples, and conversion table.
Petawatts to Attowatts converter
Converter
Engineering Converter
Convert common stress, force, torque, power, and energy units used in engineering.
Context values
Some unit families need one extra value for a physically accurate result.
Attowatt is 1e-18 watt units.
Result = input x 1e+15 / 1e-18.
Power units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Petawatts to Attowatts
Petawatt and Attowatt both measure a quantity used in structural or mechanical engineering — commonly stress, pressure, force, torque, power, or energy — where converting between the unit conventions used in different regions, industries, or equipment specifications is a routine part of design work. Specifically: Petawatt is 1000000000000000 watt units, and attowatt is 1e-18 watt units.
Formula
attowatts = petawatts × 1e+33
This factor comes from each unit's defined relationship to the category's base unit: 1 petawatt equals 1e+15 base units, and 1 attowatt equals 1e-18 base units, so dividing one by the other gives the direct petawatt-to-attowatt factor of 1e+33.
Simple example
1 PW × 1e+33 = 1e+33 aW
1 petawatt = 1e+33 attowatts.
Real-world example
100 PW × 1e+33 = 1e+35 aW
100 petawatts = 1e+35 attowatts.
Conversion table
| Petawatt (PW) | Attowatt (aW) |
|---|---|
| 1 PW | 1e+33 aW |
| 10 PW | 1e+34 aW |
| 50 PW | 5e+34 aW |
| 100 PW | 1e+35 aW |
| 500 PW | 5e+35 aW |
| 1,000 PW | 1e+36 aW |
Reverse conversion: Attowatt to Petawatt
1e+33 aW × 1e-33 = 1 PW
1e+33 attowatts = 1 petawatt.
petawatts = attowatts × 1e-33
For a page dedicated to this direction, see Attowatt to Petawatt.
Understanding the Petawatt (PW)
Petawatt is 1000000000000000 watt units.
Understanding the Attowatt (aW)
Attowatt is 1e-18 watt units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many attowatts are in 1 petawatt?
1 petawatt equals 1e+33 attowatts, using the exact defined conversion factor rather than an estimate.
How do I convert petawatt to attowatt?
Multiply the petawatt value by 1e+33. The converter above does this instantly to whatever precision you set.
How do I convert attowatt back to petawatt?
Use the reverse factor: 1 attowatt equals 1e-33 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 engineering.
What is a attowatt?
Attowatt (aW) is a unit of engineering.
Is the petawatt to attowatt conversion exact?
Yes. Both petawatt and attowatt are defined by fixed standards rather than physical artifacts, so the factor of 1e+33 used above is exact to as many digits as you choose to display.
Why do engineering unit conventions vary so much by region and industry?
Pressure, force, and stress can be expressed in metric (pascal, newton), US customary (psi, pound-force), or older and industry-specific units (atmosphere, torr, kip) depending on the country, industry, and even the equipment manufacturer, which is why engineers routinely need to convert between them when working across specs from different sources.