Pascals to Atmospheres
Convert pascals to atmospheres instantly. 1 Pa = 9.86923e-06 atm. Includes the exact factor, a conversion table of common values and the definition of both units.
How to convert pascals to atmospheres
To convert pascals to atmospheres, divide by 101,325 (multiply by 9.86923e-06). The relationship is fixed, so the same factor works for any quantity — there is nothing to look up and nothing that changes with temperature, location or context.
atm = Pa × 9.86923e-06
Pascals to Atmospheres conversion table
The values people look up most often, rounded for reading. Use the calculator above for anything in between.
| Pascals | Atmospheres |
|---|---|
| 1 Pa | 9.869e-06 atm |
| 2 Pa | 1.974e-05 atm |
| 3 Pa | 2.961e-05 atm |
| 5 Pa | 4.935e-05 atm |
| 10 Pa | 9.869e-05 atm |
| 20 Pa | 0.0001974 atm |
| 25 Pa | 0.0002467 atm |
| 50 Pa | 0.0004935 atm |
| 100 Pa | 0.0009869 atm |
| 500 Pa | 0.004935 atm |
| 1,000 Pa | 0.009869 atm |
What is a pascal?
The SI unit of pressure: one newton per square metre.
What is a atmosphere?
The standard atmosphere, defined as exactly 101,325 Pa.
The formula
atm = Pa × 9.86923e-06
Every result on this page comes from this formula. Nothing is rounded until the final display, so figures match a spreadsheet to the cent.
How to use the Pascals to Atmospheres
- Type the number of pascals you want to convert.
- Read the result in atmospheres straight away — there is no button to press.
- Check the table below for the values that come up most often, or reverse the conversion with the linked atmospheres to pascals page.
Pascals to Atmospheres — frequently asked questions
How many atmospheres are in a pascal?
One pascal equals 9.86923e-06 atm. atm = Pa × 9.86923e-06
What is the formula to convert pascals to atmospheres?
The formula is atm = Pa × 9.86923e-06. It is an exact definition rather than an approximation, so the conversion never drifts no matter how large the number.
How do I convert atmospheres back to pascals?
Divide instead of multiplying: one atmosphere is 101,325 Pa. The reverse converter is linked in the related tools list.
Is this conversion exact?
Yes. Both units are defined against the same base unit by international agreement, so the factor is exact — any rounding you see is only in the display, which you can widen by entering more decimal places.
Is this pascals to atmospheres free to use?
Yes. Every calculator on the site is free, needs no sign-up, and runs entirely in your browser, so your figures never leave your device.
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About this calculator
Written and reviewed by The Samsung Calculator editorial team. Every calculator is written against a published formula, reviewed against at least one independent reference implementation, and dated when it changes.
Last reviewed August 19, 2026 · Calculation runs client-side · No data collected · Report an error