Atmospheres to PSI Converter
Type a value in atmospheres to get it in psi, and see the reverse conversion.
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Atmospheres to PSI Converter by TheCalcTools
How the Atmospheres to PSI Converter works
The standard atmosphere is defined as exactly 101,325 Pa, the average air pressure at sea level. It equals 760 mmHg and about 14.696 psi.
To convert atmospheres to psi, multiply by 14.69594878. The calculator shows the result to 6 significant figures; the conversion factor itself is exact by definition.
Quick estimate in your head: multiply by 14.7.
The formula
Worked example
Using the default values shown in the calculator:
| Value in atmospheres (atm) | 1 |
|---|
- 1 atm × 14.69594878 = 14.6959 psi.
Result:
| PSI (psi) | 14.6959 |
|---|---|
| 1 atm in psi | 14.6959 |
| Your number read as psi, in atm | 0.068046 |
| Kilopascals (kPa) | 101.325 |
| Bar (bar) | 1.01325 |
| mmHg (mmHg) | 760 |
Conversion table
| atm | psi |
|---|---|
| 0.5 atm | 7.34797 psi |
| 1 atm | 14.6959 psi |
| 2 atm | 29.3919 psi |
| 3 atm | 44.0878 psi |
| 5 atm | 73.4797 psi |
| 10 atm | 146.959 psi |
| 20 atm | 293.919 psi |
| 50 atm | 734.797 psi |
| 100 atm | 1,469.59 psi |
Frequently asked questions
What is 1 atmosphere in psi?
1 atmosphere (atm) equals 14.6959 psi.
What is 1 atm in psi?
14.6959 psi.
Sources and further reading
- Wikipedia: Standard atmosphere (unit)
- NIST: Guide for the Use of the International System of Units (SI)
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This calculator gives estimates for information only. Check important results independently before you rely on them. See our disclaimer.