How to convert pounds per square inch to atmospheres
Formula: atm = psi × 0.068046
Worked example: 32 psi → 32 × 0.068046 = 2.17747 atm
One standard atmosphere equals 14.6959 psi. Scuba divers add about 14.7 psi for every 33 feet of seawater.
Pounds per square inch to atmospheres conversion chart
| Pounds per square inch (psi) | Atmospheres (atm) |
|---|---|
| 1 psi | 0.068046 atm |
| 5 psi | 0.34023 atm |
| 10 psi | 0.68046 atm |
| 14.7 psi | 1.00028 atm |
| 15 psi | 1.02069 atm |
| 20 psi | 1.36092 atm |
| 25 psi | 1.70115 atm |
| 30 psi | 2.04138 atm |
| 32 psi | 2.17747 atm |
| 35 psi | 2.38161 atm |
| 40 psi | 2.72184 atm |
| 50 psi | 3.4023 atm |
| 60 psi | 4.08276 atm |
| 80 psi | 5.44368 atm |
| 100 psi | 6.8046 atm |
| 150 psi | 10.2069 atm |
| 200 psi | 13.6092 atm |
| 500 psi | 34.023 atm |
| 1,000 psi | 68.046 atm |
| 3,000 psi | 204.138 atm |
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.
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.