What is an attopascal?

An attopascal (aPa) is an SI derived unit of pressure equal to 10^-18 pascals, used to measure extraordinarily low pressures in scientific fields.

When should I use a picopascal instead of attopascal?

Picopascal (pPa) is preferable for representing very low yet more measurable pressures seen in vacuum technology and instrument sensitivity measurements.

Is this conversion useful for everyday pressure measurements?

No, both attopascal and picopascal are relevant for extremely low pressures far beneath atmospheric levels, suitable mainly for specialized scientific research.

How to Convert from Attopascal [aPa] to Picopascal [pPa]

Learn how to convert pressure values from attopascal (aPa) to picopascal (pPa) with this easy-to-use online unit converter designed for extremely low pressure measurements relevant to scientific research.

Attopascal [aPa]

Picopascal [pPa]

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

Attopascal [aPa] to Picopascal [pPa] Conversion Table

Attopascal [aPa]	Picopascal [pPa]

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 Picopascal [pPa] Conversion Table
Attopascal [aPa]	Picopascal [pPa]

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What Is This Tool?

This converter allows users to transform pressure measurements from attopascal, an ultra-small SI derived unit, into picopascal, which is suitable for describing very low pressures in scientific and engineering contexts. It supports precise conversions needed in fields such as astrophysics, vacuum technology, and cryogenics.

How to Use This Tool?

Enter the pressure value in attopascal (aPa) you wish to convert
Select attopascal as the input unit and picopascal as the output unit
Click the convert button to get the equivalent pressure in picopascal (pPa)
View the converted result to use in your scientific calculations or reports

Key Features

Converts values from attopascal [aPa] to picopascal [pPa]
Browser-based and user-friendly interface
Supports scientific applications requiring extremely low pressure units
Displays conversion results instantly
Includes examples for better understanding

Examples

5 attopascal equals 0.000005 picopascal
100 attopascal equals 0.0001 picopascal

Common Use Cases

Expressing extremely low pressures encountered in astrophysics and space physics
Describing residual gas pressures in ultra-high vacuum systems for surface science
Calibrating instruments sensitive to background pressures such as spaceborne mass spectrometers
Supporting measurements in accelerator and cryogenic research experiments

Tips & Best Practices

Ensure input values are within the range suitable for attopascal scale to maintain accuracy
Use this conversion tool where high-precision pressure measurements are required
Cross-check results with calibrated instruments for critical scientific applications
Be cautious of very small numerical values and possible rounding in lower precision contexts

Limitations

Applicable only to extremely low pressure measurements relevant to specialized scientific fields
Requires highly sensitive and calibrated devices for meaningful measurement
Conversion outputs involve very small numbers that may be affected by rounding errors
Not suitable for common atmospheric or higher pressure ranges

Frequently Asked Questions

What is an attopascal?: An attopascal (aPa) is an SI derived unit of pressure equal to 10^-18 pascals, used to measure extraordinarily low pressures in scientific fields.
When should I use a picopascal instead of attopascal?: Picopascal (pPa) is preferable for representing very low yet more measurable pressures seen in vacuum technology and instrument sensitivity measurements.
Is this conversion useful for everyday pressure measurements?: No, both attopascal and picopascal are relevant for extremely low pressures far beneath atmospheric levels, suitable mainly for specialized scientific research.

Key Terminology

Attopascal (aPa): An SI-derived unit of pressure equal to 10^-18 pascal, used for measuring extremely low pressures.
Picopascal (pPa): An SI-derived unit of pressure equal to 10^-12 pascals, commonly applied in scientific contexts for very low pressures.
Pascal (Pa): The SI unit of pressure equal to one newton per square meter.

Quick Knowledge Check

What unit is smaller: attopascal or picopascal?

Picopascal is smaller

Attopascal is smaller

They are equal

Which field commonly uses attopascal measurements?

Everyday weather forecasting

Astrophysics and space physics

Household pressure monitoring

What is the conversion factor from attopascal to picopascal?

1 aPa = 1,000,000 pPa

1 aPa = 0.000001 pPa

1 aPa = 1 pPa

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