How to convert atmospheres to pounds per square inch
Formula: psi = atm × 14.6959
Worked example: 1 atm → 1 × 14.6959 = 14.6959 psi
One standard atmosphere equals 14.6959 psi. Scuba divers add about 14.7 psi for every 33 feet of seawater.
Atmospheres to pounds per square inch conversion chart
| Atmospheres (atm) | Pounds per square inch (psi) |
|---|---|
| 0.5 atm | 7.34797 psi |
| 1 atm | 14.6959 psi |
| 1.5 atm | 22.0439 psi |
| 2 atm | 29.3919 psi |
| 3 atm | 44.0878 psi |
| 4 atm | 58.7838 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 |
What is an atmosphere?
The standard atmosphere is defined as exactly 101,325 pascals, the average air pressure at sea level. Divers count roughly one extra atmosphere for every 10 meters, or 33 feet, of seawater.
What is a pound per square inch?
The pound per square inch is the US unit of pressure, about 6,894.76 pascals. Car tires are usually inflated to 30 to 35 psi, and sea-level air pressure is 14.7 psi. Gauges often read psig, the pressure above atmospheric.