Convert Pounds per Square Inch (psi) to Atmospheres (atm)
Enter a value below to convert Pounds per Square Inch (psi) to Atmospheres (atm).
Conversion:
1 Pounds per Square Inch (psi) = 0.068045990624 Atmospheres (atm)
How to Convert Pounds per Square Inch (psi) to Atmospheres (atm)
1 psi = 0.068045990624 atm
1 atm = 14.695943006 psi
Example: convert 15 Pounds per Square Inch (psi) to Atmospheres (atm):
25 psi = 1.7011497656 atm
Pounds per Square Inch (psi) to Atmospheres (atm) Conversion Table
| Pounds per Square Inch (psi) | Atmospheres (atm) |
|---|---|
| 0.01 psi | 0.00068045990624 atm |
| 0.1 psi | 0.0068045990624 atm |
| 1 psi | 0.068045990624 atm |
| 2 psi | 0.13609198125 atm |
| 3 psi | 0.20413797187 atm |
| 5 psi | 0.34022995312 atm |
| 10 psi | 0.68045990624 atm |
| 20 psi | 1.3609198125 atm |
| 50 psi | 3.4022995312 atm |
| 100 psi | 6.8045990624 atm |
| 1000 psi | 68.045990624 atm |
Pounds per Square Inch (psi)
Definition
Pounds per square inch (psi) is an imperial unit of pressure equal to the force of one pound-force applied to an area of one square inch. It equals approximately 6,894.76 pascals.
History
PSI evolved from the British imperial system and became the dominant pressure unit in American and British engineering. It gained widespread use with the industrialization of pneumatic and hydraulic systems.
Current use
PSI is the primary pressure unit in the United States for tire pressure, water pressure, hydraulic systems, compressed gas cylinders, and HVAC systems. It is also widely used in oil and gas industries.
Atmospheres (atm)
Definition
A standard atmosphere (atm) is a unit of pressure defined as exactly 101,325 pascals. It represents the average atmospheric pressure at sea level.
History
The standard atmosphere was defined in 1954 as a reference standard for pressure. It was historically based on mercury barometer readings and the average weight of the Earth's atmosphere at sea level.
Current use
Atmospheres are used in chemistry (standard conditions for gas calculations), diving (dive depth pressure ratings), and as a reference point for comparing relative pressures across different systems.