Atmospheres to Pascals Converter
Enter the pressure in atmospheres below to convert it to pascals.
Convert Atmospheres to Pascals
Enter a value in atmospheres (atm) to convert to pascals (Pa).
Standard Atmosphere to Pascal Conversion Table
Table showing various standard atmosphere measurements converted to pascals. Click any preset value or arrow to load it into the converter.
| Atmospheres (atm) | Pascals (Pa) |
|---|---|
| 0.0000001 atm | 0.0101325 Pa |
| 0.0000002 atm | 0.020265 Pa |
| 0.0000003 atm | 0.0303975 Pa |
| 0.0000004 atm | 0.04053 Pa |
| 0.0000005 atm | 0.0506625 Pa |
| 0.0000006 atm | 0.060795 Pa |
| 0.0000007 atm | 0.0709275 Pa |
| 0.0000008 atm | 0.08106 Pa |
| 0.0000009 atm | 0.0911925 Pa |
| 0.00000001 atm | 0.0010133 Pa |
How to Convert Atmospheres to Pascals
To convert atmospheres to pascals, multiply the pressure by the following conversion ratio: 101,325 pascals/standard atmosphere.
Since one standard atmosphere is equal to 101,325 pascals, you can use this simple formula to convert:
The pressure in pascals is equal to the pressure in atmospheres multiplied by 101,325.
For example, here's how to convert 5 atmospheres to pascals using the formula above.
How Many Pascals Are in a Standard Atmosphere?
There are 101,325 pascals in a standard atmosphere, which is why we use this value in the formula above.
Our standard atmosphere to pascal calculator automatically converts your pressure measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
Atmospheres and pascals are both units used to measure pressure. Keep reading to learn more about each unit.
What Is a Standard Atmosphere?
A standard atmosphere is a unit of pressure equal to 101,325 pascals (Pa), the base unit for pressure. Standard sea-level atmospheric pressure defined as 101,325 Pascals. [1]
The standard atmosphere is classified as a standard unit of pressure. Atmospheres can be abbreviated as atm; for example, 1 standard atmosphere can be written as 1 atm.
When working with atmospheres (atm) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.
In practice, atmospheres (atm) are widely used across large-scale industrial, bulk, and macro-level pressure specifications within international standard workflows, engineering documentation, and technical data sheets.
What Is a Pascal?
SI derived unit of pressure equal to 1 Newton per square meter (N/m²). It serves as a primary reference unit for measuring pressure across scientific and practical applications. [2]
The pascal is classified as an International System of Units (SI) unit of pressure. Pascals can be abbreviated as Pa; for example, 1 pascal can be written as 1 Pa.
As the primary coherent reference unit for pressure in this category, all other pressure units are mathematically anchored to the pascal (Pa).
In practice, pascals (Pa) are widely used across standard pressure applications within International System of Units (SI) workflows, engineering documentation, and technical data sheets.
When converting pressure between atmospheres (atm) and pascals (Pa), keep full floating-point precision (1 atm = 101,325 Pa; 1 Pa = 0.000009869 atm) during intermediate calculations and round only the final pascal figure to match your instrument tolerance.
More Standard Atmosphere & Pascal Conversions
Need to calculate in the opposite direction? Use our pascals to atmospheres calculator to switch your starting unit immediately. You can also explore related tools such as converting pascals to atmospheres, converting hectopascals to pascals, or converting megapascals to pascals.
Convert from Atmospheres
Frequently Asked Questions
References
- [1]NIST SP 811 StandardNIST SP 811 (NIST SP 811 App. B.9 (Pressure & Stress))·Pressure Metrology Standard — Atmospheres (atm) to Pascals (Pa)
- [2]NIST CUU SpecificationNIST CUU (Derived SI Unit: Pascal (Pa))·Unit Specifications: Standard Atmosphere (atm) & Pascal (Pa)
- [3]BIPM ReferenceBIPM (SI Brochure (9th Ed.) — Mechanics)·Conversion Factors & Mathematical Basis (atm to Pa)