PSI to Atmospheres
Convert psi to atmospheres instantly. 1 psi = 0.0680459639 atm. Includes the exact factor, a conversion table of common values and the definition of both units.
How to convert psi to atmospheres
To convert psi to atmospheres, divide by 14.6959487755 (multiply by 0.0680459639). 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 = psi × 0.0680459639
PSI to Atmospheres conversion table
The values people look up most often, rounded for reading. Use the calculator above for anything in between.
| PSI | Atmospheres |
|---|---|
| 1 psi | 0.068046 atm |
| 2 psi | 0.136092 atm |
| 3 psi | 0.204138 atm |
| 5 psi | 0.34023 atm |
| 10 psi | 0.68046 atm |
| 20 psi | 1.360919 atm |
| 25 psi | 1.701149 atm |
| 50 psi | 3.402298 atm |
| 100 psi | 6.804596 atm |
| 500 psi | 34.022982 atm |
| 1,000 psi | 68.045964 atm |
What is a psi?
Pounds per square inch, the US pressure unit for tyres and plumbing.
What is a atmosphere?
The standard atmosphere, defined as exactly 101,325 Pa.
The formula
atm = psi × 0.0680459639
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 PSI to Atmospheres
- Type the number of psi 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 psi page.
PSI to Atmospheres — frequently asked questions
How many atmospheres are in a psi?
One psi equals 0.0680459639 atm. atm = psi × 0.0680459639
What is the formula to convert psi to atmospheres?
The formula is atm = psi × 0.0680459639. 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 psi?
Divide instead of multiplying: one atmosphere is 14.6959487755 psi. 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 psi 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.
What people search for
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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