Attopascal is 1e-18 pascal units.
Attopascals to Petapascals Converter — aPa to PPa
Convert Attopascal (aPa) to Petapascal (PPa) using the exact conversion factor (1 attopascal = 1e-33 petapascal). See the formula, worked examples, and conversion table.
Attopascals to Petapascals 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.
Petapascal is 1000000000000000 pascal units.
Result = input x 1e-18 / 1e+15.
Stress Pressure units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Attopascals to Petapascals
Attopascal and Petapascal 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: Attopascal is 1e-18 pascal units, and petapascal is 1000000000000000 pascal units.
Formula
petapascals = attopascals × 1e-33
This factor comes from each unit's defined relationship to the category's base unit: 1 attopascal equals 1e-18 base units, and 1 petapascal equals 1e+15 base units, so dividing one by the other gives the direct attopascal-to-petapascal factor of 1e-33.
Simple example
1 aPa × 1e-33 = 1e-33 PPa
1 attopascal = 1e-33 petapascals.
Real-world example
100 aPa × 1e-33 = 1e-31 PPa
100 attopascals = 1e-31 petapascals.
Conversion table
| Attopascal (aPa) | Petapascal (PPa) |
|---|---|
| 1 aPa | 1e-33 PPa |
| 10 aPa | 1e-32 PPa |
| 50 aPa | 5e-32 PPa |
| 100 aPa | 1e-31 PPa |
| 500 aPa | 5e-31 PPa |
| 1,000 aPa | 1e-30 PPa |
Reverse conversion: Petapascal to Attopascal
1e-33 PPa × 1e+33 = 1 aPa
1e-33 petapascals = 1 attopascal.
attopascals = petapascals × 1e+33
For a page dedicated to this direction, see Petapascal to Attopascal.
Understanding the Attopascal (aPa)
Attopascal is 1e-18 pascal units.
Understanding the Petapascal (PPa)
Petapascal is 1000000000000000 pascal units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many petapascals are in 1 attopascal?
1 attopascal equals 1e-33 petapascals, using the exact defined conversion factor rather than an estimate.
How do I convert attopascal to petapascal?
Multiply the attopascal value by 1e-33. The converter above does this instantly to whatever precision you set.
How do I convert petapascal back to attopascal?
Use the reverse factor: 1 petapascal equals 1e+33 attopascals. You can also use the swap control in the converter above to flip the direction instantly.
What is a attopascal?
Attopascal (aPa) is a unit of engineering.
What is a petapascal?
Petapascal (PPa) is a unit of engineering.
Is the attopascal to petapascal conversion exact?
Yes. Both attopascal and petapascal 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.