Atmospheres to PSI
Convert atmospheres to psi instantly. 1 atm = 14.6959487755 psi. Includes the exact factor, a conversion table of common values and the definition of both units.
How to convert atmospheres to psi
To convert atmospheres to psi, multiply by 14.6959487755. 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.
psi = atm × 14.6959487755
Atmospheres to PSI conversion table
The values people look up most often, rounded for reading. Use the calculator above for anything in between.
| Atmospheres | PSI |
|---|---|
| 1 atm | 14.695949 psi |
| 2 atm | 29.391898 psi |
| 3 atm | 44.087846 psi |
| 5 atm | 73.479744 psi |
| 10 atm | 146.959488 psi |
| 20 atm | 293.918976 psi |
| 25 atm | 367.398719 psi |
| 50 atm | 734.797439 psi |
| 100 atm | 1,469.59 psi |
| 500 atm | 7,347.97 psi |
| 1,000 atm | 14,695.95 psi |
What is a atmosphere?
The standard atmosphere, defined as exactly 101,325 Pa.
What is a psi?
Pounds per square inch, the US pressure unit for tyres and plumbing.
The formula
psi = atm × 14.6959487755
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 Atmospheres to PSI
- Type the number of atmospheres you want to convert.
- Read the result in psi 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 psi to atmospheres page.
Atmospheres to PSI — frequently asked questions
How many psi are in a atmosphere?
One atmosphere equals 14.6959487755 psi. psi = atm × 14.6959487755
What is the formula to convert atmospheres to psi?
The formula is psi = atm × 14.6959487755. It is an exact definition rather than an approximation, so the conversion never drifts no matter how large the number.
How do I convert psi back to atmospheres?
Divide instead of multiplying: one psi is 0.0680459639 atm. 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 atmospheres to psi 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
This page answers each of these searches. They are the exact phrases visitors use to find the atmospheres to psi.
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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