Attopascal is 1e-18 pascal units.
Attopascals to Technical atmospheres Converter — aPa to at
Convert Attopascal (aPa) to Technical atmosphere (at) using the exact conversion factor (1 attopascal = 1.019716e-23 technical atmosphere). See the formula, worked examples, and conversion table.
Attopascals to Technical atmospheres 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.
Technical atmosphere is kilogram-force per square centimeter.
Result = input x 1e-18 / 98066.5.
Stress Pressure units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Attopascals to Technical atmospheres
Attopascal and Technical atmosphere 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 technical atmosphere is kilogram-force per square centimeter.
Formula
technical atmospheres = attopascals × 1.019716e-23
This factor comes from each unit's defined relationship to the category's base unit: 1 attopascal equals 1e-18 base units, and 1 technical atmosphere equals 98066.5 base units, so dividing one by the other gives the direct attopascal-to-technical atmosphere factor of 1.019716e-23.
Simple example
1 aPa × 1.019716e-23 = 1.019716e-23 at
1 attopascal = 1.019716e-23 technical atmospheres.
Real-world example
100 aPa × 1.019716e-23 = 1.019716e-21 at
100 attopascals = 1.019716e-21 technical atmospheres.
Conversion table
| Attopascal (aPa) | Technical atmosphere (at) |
|---|---|
| 1 aPa | 1.019716e-23 at |
| 10 aPa | 1.019716e-22 at |
| 50 aPa | 5.098581e-22 at |
| 100 aPa | 1.019716e-21 at |
| 500 aPa | 5.098581e-21 at |
| 1,000 aPa | 1.019716e-20 at |
Reverse conversion: Technical atmosphere to Attopascal
1.019716e-23 at × 9.80665e+22 = 0.9999997911 aPa
1.019716e-23 technical atmospheres = 0.9999997911 attopascals.
attopascals = technical atmospheres × 9.80665e+22
For a page dedicated to this direction, see Technical atmosphere to Attopascal.
Understanding the Attopascal (aPa)
Attopascal is 1e-18 pascal units.
Understanding the Technical atmosphere (at)
Technical atmosphere is kilogram-force per square centimeter.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many technical atmospheres are in 1 attopascal?
1 attopascal equals 1.019716e-23 technical atmospheres, using the exact defined conversion factor rather than an estimate.
How do I convert attopascal to technical atmosphere?
Multiply the attopascal value by 1.019716e-23. The converter above does this instantly to whatever precision you set.
How do I convert technical atmosphere back to attopascal?
Use the reverse factor: 1 technical atmosphere equals 9.80665e+22 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 technical atmosphere?
Technical atmosphere (at) is a unit of engineering.
Is the attopascal to technical atmosphere conversion exact?
Yes. Both attopascal and technical atmosphere are defined by fixed standards rather than physical artifacts, so the factor of 1.019716e-23 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.