In 1 atmospheres there are 101,325 pascals. Meanwhile in 1 pascals there are 0.00000986923 atmospheres. Keep reading to learn more about each unit of measure and how they are calculated. Or just use the Pascals to Atmospheres calculator above to convert any number.
* Values rounded to 6 decimal places for readability
To convert atmospheres (atm) to pascals (Pa), multiply by the standard pressure value:
Conversion formula
Quick examples
Use this atm to Pa conversion any time you need pressure in pascals for science, engineering, weather, or lab work.
1 atmosphere (atm) equals 101,325 pascals (Pa).
To convert atm to Pa, multiply the atm value by 101,325.
Use this formula: Pa = atm × 101,325.
Example: 2 atm = 2 × 101,325 = 202,650 Pa.
atm stands for standard atmosphere. It’s a pressure unit based on average sea-level air pressure on Earth. It often shows up in science, weather, and lab work.
Pa stands for pascal, the SI unit of pressure.
1 pascal equals 1 newton per square meter (1 N/m²).
They aren’t larger as a pressure, they’re smaller as a unit.
A pascal is a small unit, so it takes 101,325 Pa to match 1 atm.
No. 1 atm = 101,325 Pa, not 100,000 Pa.
100,000 Pa equals 1 bar, which is close to atm but not the same.
Use Pa = atm × 101,325.
0.5 atm = 0.5 × 101,325 = 50,662.5 Pa.
Convert the same way: Pa = atm × 101,325.
A negative result means the value is below the reference level used for the atm value (often relative or gauge pressure).
The conversion factor 1 atm = 101,325 Pa is exact for the standard atmosphere.
Real air pressure at sea level changes with weather and height, but the unit conversion stays the same.
1 atm is a set reference pressure.
Absolute pressure measures from a perfect vacuum. In many cases, 1 atm absolute is close to typical sea-level air pressure.
It’s common in:
The Calculate Box tool to convert atmospheres to pascals uses the open source script Convert.js to convert units of measurement. To use this tool, simply type a atmospheres value in the box and have it instantly converted to pascals.