What is an attopascal?

An attopascal (aPa) is an SI-derived unit of pressure equal to 10^-18 pascals, used to describe extremely low pressures.

What does psi stand for?

Psi stands for pound per square inch, an Imperial and US customary unit representing pressure from one pound-force applied to an area of one square inch.

Why convert attopascal to psi?

Users convert attopascal to psi to express extremely low pressure values in a more familiar Imperial unit for comparison or engineering adaptations.

How to Convert from Attopascal [aPa] to Psi [psi]

Learn how to convert pressure values from attopascal (aPa), an SI-derived unit for extremely low pressures, to psi (pound per square inch), commonly used in Imperial and US customary systems.

Attopascal [aPa]

Psi [psi]

Please check your input. It must be a valid numeric value.

Attopascal [aPa] to Psi [psi] Conversion Table

Attopascal [aPa]	Psi [psi]

Custom Unit Conversion Table Generator – Instant Printable Conversion Tables

Start Value

Enter the starting number (positive decimal or integer ≥ 0). Example: 0.1, 1, 5.

End Value

Enter the ending number (positive decimal or integer > Start Value). Example: 10, 50, 100.

Interval

Enter the step size (positive decimal > 0 and < End Value – Start Value). Example: 1.0, 2.5.

Attopascal [aPa] to Psi [psi] Conversion Table
Attopascal [aPa]	Psi [psi]

Explore More Pressure Units Converter

What Is This Tool?

This converter facilitates the transformation of pressure values measured in attopascals (aPa) into psi (pounds per square inch), enabling users to interpret extremely small pressures in a widely recognized Imperial pressure unit.

How to Use This Tool?

Enter the pressure value in attopascals (aPa) into the input field.
Select attopascal as the source unit and psi as the target unit if required.
Click the convert button to see the equivalent pressure in psi.
Use the output result for comparisons, calculations, or engineering purposes.

Key Features

Converts extremely low pressure values from attopascal to psi.
Easy to use with input and output fields for quick conversions.
Supports pressures relevant to astrophysics, ultra-high vacuum, and industrial contexts.
Provides precise conversion according to the defined conversion rate.
Browser-based and accessible without special software.

Examples

Convert 10 aPa to psi results in approximately 1.4503773773e-21 psi.
Convert 1,000 aPa to psi results in approximately 1.4503773773e-19 psi.

Common Use Cases

Interpreting extremely low pressures in astrophysics and space physics.
Analyzing residual gas pressures in ultra-high vacuum experimental setups.
Translating theoretical pressure data near the 10^-18 pascal scale for engineering applications.
Comparing very low pressure measurements with conventional industrial standards.

Tips & Best Practices

Ensure the input value is within a realistic range for attopascal measurements.
Be aware that converted psi values may be below instrument detection limits.
Use the conversion to aid understanding or cross-reference with other measurement units.
Consider the scientific context when applying these conversions for research or engineering.

Limitations

Converted psi values are extremely small and often near or below practical gauge measurement capabilities.
Significant rounding or precision loss may occur due to the large difference in unit scale.
Not suitable for standard engineering measurements without specialized instruments.

Frequently Asked Questions

What is an attopascal?: An attopascal (aPa) is an SI-derived unit of pressure equal to 10^-18 pascals, used to describe extremely low pressures.
What does psi stand for?: Psi stands for pound per square inch, an Imperial and US customary unit representing pressure from one pound-force applied to an area of one square inch.
Why convert attopascal to psi?: Users convert attopascal to psi to express extremely low pressure values in a more familiar Imperial unit for comparison or engineering adaptations.

Key Terminology

Attopascal (aPa): An SI derived unit of pressure equal to 10^-18 pascals, used for extremely low pressure measurements.
Psi (pound per square inch): An Imperial/US customary unit of pressure defined as one pound-force applied to an area of one square inch.
Conversion Rate: The numerical factor used to translate pressure from attopascal to psi, specifically 1 aPa = 1.4503773773e-22 psi.

Quick Knowledge Check

What unit does attopascal measure?

Force

Pressure

Volume

Psi is commonly used for pressure in which measurement system?

Metric

Imperial/US customary

The attopascal is equal to 10 to what power of pascal?

-18

-6

-12

Share Us

Similar Calculators

Online Thermal Resistance Units Converter Online Surface Current Density Units Converter Online Volume Units Converter Online Volume Dry Units Converter Online Weight and Mass Units Converter