Femtopascal is 1e-15 pascal units.
Femtopascals to Attopascals Converter — fPa to aPa
Convert Femtopascal (fPa) to Attopascal (aPa) using the exact conversion factor (1 femtopascal = 1,000 attopascal). See the formula, worked examples, and conversion table.
Femtopascals to Attopascals 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.
Attopascal is 1e-18 pascal units.
Result = input x 1e-15 / 1e-18.
Stress Pressure units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Femtopascals to Attopascals
Femtopascal and Attopascal 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: Femtopascal is 1e-15 pascal units, and attopascal is 1e-18 pascal units.
Formula
attopascals = femtopascals × 1000
This factor comes from each unit's defined relationship to the category's base unit: 1 femtopascal equals 1e-15 base units, and 1 attopascal equals 1e-18 base units, so dividing one by the other gives the direct femtopascal-to-attopascal factor of 1000.
Simple example
1 fPa × 1000 = 1,000 aPa
1 femtopascal = 1,000 attopascals.
Real-world example
100 fPa × 1000 = 100,000 aPa
100 femtopascals = 100,000 attopascals.
Conversion table
| Femtopascal (fPa) | Attopascal (aPa) |
|---|---|
| 1 fPa | 1,000 aPa |
| 10 fPa | 10,000 aPa |
| 50 fPa | 50,000 aPa |
| 100 fPa | 100,000 aPa |
| 500 fPa | 500,000 aPa |
| 1,000 fPa | 1,000,000 aPa |
Reverse conversion: Attopascal to Femtopascal
1 aPa × 0.001 = 0.001 fPa
1 attopascal = 0.001 femtopascals.
femtopascals = attopascals × 0.001
For a page dedicated to this direction, see Attopascal to Femtopascal.
Understanding the Femtopascal (fPa)
Femtopascal is 1e-15 pascal units.
Understanding the Attopascal (aPa)
Attopascal is 1e-18 pascal units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many attopascals are in 1 femtopascal?
1 femtopascal equals 1,000 attopascals, using the exact defined conversion factor rather than an estimate.
How do I convert femtopascal to attopascal?
Multiply the femtopascal value by 1000. The converter above does this instantly to whatever precision you set.
How do I convert attopascal back to femtopascal?
Use the reverse factor: 1 attopascal equals 0.001 femtopascals. You can also use the swap control in the converter above to flip the direction instantly.
What is a femtopascal?
Femtopascal (fPa) is a unit of engineering.
What is a attopascal?
Attopascal (aPa) is a unit of engineering.
Is the femtopascal to attopascal conversion exact?
Yes. Both femtopascal and attopascal are defined by fixed standards rather than physical artifacts, so the factor of 1000 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.