Attopascal is 1e-18 pascal units.
Attopascals to Picopascals Converter — aPa to pPa
Convert Attopascal (aPa) to Picopascal (pPa) using the exact conversion factor (1 attopascal = 0.000001 picopascal). See the formula, worked examples, and conversion table.
Attopascals to Picopascals 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.
Picopascal is 1e-12 pascal units.
Result = input x 1e-18 / 1e-12.
Stress Pressure units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Attopascals to Picopascals
Attopascal and Picopascal 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 picopascal is 1e-12 pascal units.
Formula
picopascals = attopascals × 0.000001
This factor comes from each unit's defined relationship to the category's base unit: 1 attopascal equals 1e-18 base units, and 1 picopascal equals 1e-12 base units, so dividing one by the other gives the direct attopascal-to-picopascal factor of 0.000001.
Simple example
1 aPa × 0.000001 = 0.000001 pPa
1 attopascal = 0.000001 picopascals.
Real-world example
100 aPa × 0.000001 = 0.0001 pPa
100 attopascals = 0.0001 picopascals.
Conversion table
| Attopascal (aPa) | Picopascal (pPa) |
|---|---|
| 1 aPa | 0.000001 pPa |
| 10 aPa | 0.00001 pPa |
| 50 aPa | 0.00005 pPa |
| 100 aPa | 0.0001 pPa |
| 500 aPa | 0.0005 pPa |
| 1,000 aPa | 0.001 pPa |
Reverse conversion: Picopascal to Attopascal
0.000001 pPa × 1000000 = 1 aPa
0.000001 picopascals = 1 attopascals.
attopascals = picopascals × 1000000
For a page dedicated to this direction, see Picopascal to Attopascal.
Understanding the Attopascal (aPa)
Attopascal is 1e-18 pascal units.
Understanding the Picopascal (pPa)
Picopascal is 1e-12 pascal units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many picopascals are in 1 attopascal?
1 attopascal equals 0.000001 picopascals, using the exact defined conversion factor rather than an estimate.
How do I convert attopascal to picopascal?
Multiply the attopascal value by 0.000001. The converter above does this instantly to whatever precision you set.
How do I convert picopascal back to attopascal?
Use the reverse factor: 1 picopascal equals 1,000,000 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 picopascal?
Picopascal (pPa) is a unit of engineering.
Is the attopascal to picopascal conversion exact?
Yes. Both attopascal and picopascal are defined by fixed standards rather than physical artifacts, so the factor of 0.000001 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.