Convert pascals to atmospheres
Converting pascals to atmospheres is a common pressure task, whether you are checking a recipe, a spec sheet, a travel distance or a homework problem. Since 1 Pa equals 0.00000986923 atm, the math is a single multiplication — and this page does it for you instantly, with the formula, a table of common values and answers to the questions people ask most.
Exact factor
How to convert pascals to atmospheres
To convert pascals to atmospheres, multiply the number of pascals by 0.00000986923. For example, 10 Pa × 0.00000986923 = 0.0000986923 atm.
atm = Pa × 0.00000986923
- Write down the value in pascals you want to convert.
- Multiply it by 0.00000986923 (the exact Pa→atm factor).
- The result is your value in atmospheres. Check it below with the converter or the table.
Conversion table
Common values of pascals and their equivalents in atmospheres:
| Pa | atm |
|---|---|
| 1 | 0.00000986923 |
| 2 | 0.0000197385 |
| 3 | 0.0000296077 |
| 4 | 0.0000394769 |
| 5 | 0.0000493462 |
| 10 | 0.0000986923 |
| 20 | 0.000197385 |
| 25 | 0.000246731 |
| 50 | 0.000493462 |
| 100 | 0.000986923 |
| 250 | 0.00246731 |
| 500 | 0.00493462 |
About these units
Pascal (Pa). The pascal is the SI unit of pressure, one newton per square meter. Because it is small, practical values are often quoted in kilopascals, bar or atmospheres.
Atmosphere (atm). One standard atmosphere is defined as exactly 101,325 pascals, the reference average pressure of Earth's atmosphere at sea level. It anchors chemistry and gas-law calculations.
Frequently asked questions
How do I convert pascals to atmospheres?
To convert pascals to atmospheres, multiply the number of pascals by 0.00000986923. For example, 10 Pa × 0.00000986923 = 0.0000986923 atm. Or skip the math: type the value into the converter at the top of this page and the result updates instantly.
How many atmospheres are in 1 pascal?
1 Pa = 0.00000986923 atm. That is the fixed relationship used by this converter and by international standards.
How many pascals are in 1 atmosphere?
1 atm = 101,325 Pa. If you are converting in the opposite direction, use our Atmosphere to Pascal converter for the dedicated table and FAQ.
Is the pascals to atmospheres conversion exact?
Yes. Both units are defined by international agreement, so the factor of 0.00000986923 is exact. Displayed results are rounded to 6 significant digits only for readability.
What is pascal used for?
The pascal is the SI unit of pressure, one newton per square meter. Because it is small, practical values are often quoted in kilopascals, bar or atmospheres.