Standard Atmosphere (atm)
The standard atmosphere (atm) is defined as exactly 101,325 pascals — average sea-level atmospheric pressure.
Atmospheres compare scuba tank fills, describe laboratory reference pressure, and normalize gas volumes.
Convert standard atmosphere to pound per square inch (psi) instantly. Type in either field — results update live.
Selected atm values converted to psi using the exact factor from this tool.
| atm | psi |
|---|---|
| 0.01 | 0.1469594878 |
| 0.1 | 1.4695948775 |
| 1 | 14.6959487755 |
| 2 | 29.391897551 |
| 3 | 44.0878463265 |
| 5 | 73.4797438775 |
| 10 | 146.9594877549 |
| 20 | 293.9189755098 |
| 50 | 734.7974387746 |
| 100 | 1,469.5948775492 |
| 1,000 | 14,695.9487754923 |
Exact conversion factors in both directions, plus a worked example.
1 atm = 14.6959487755 psi
1 psi = 0.0680459639 atm
To convert standard atmosphere to pound per square inch (psi), multiply by 14.6959487755.
To convert pound per square inch (psi) to standard atmosphere, multiply by 0.0680459639.
Example: convert 10 atm to psi
10 × 14.6959487755 = 146.9594877549 psi
Short background on the units used in this conversion.
The standard atmosphere (atm) is defined as exactly 101,325 pascals — average sea-level atmospheric pressure.
Atmospheres compare scuba tank fills, describe laboratory reference pressure, and normalize gas volumes.
Pounds per square inch (psi) measures force in pounds distributed over each square inch of area.
PSI is the default for US tire pressure, HVAC systems, hydraulics, and many industrial pressure ratings.
psi = atm × 14.6959487755atm = psi × 0.0680459639, using the same exact factors as this converter.Jump to any pressure conversion starting from standard atmosphere — including the reverse direction and every other unit in our dataset.