Standard Atmosphere to PSI Converter (atm to psi)

Standard Atmosphere to PSI Conversion Formula

To convert a value from standard atmosphere (atm) to pounds per square inch (psi), you multiply the atmosphere value by 14.6959487755:

Example: Convert 5 atm to psi

5 atm = 5 × 14.6959487755 psi = 73.4797438775 psi

PSI to Standard Atmosphere Conversion Formula

To convert a value from pounds per square inch (psi) to standard atmosphere (atm), you multiply the psi value by 0.0680459639:

Example: Convert 30 psi to atm

30 psi = 30 × 0.0680459639 atm = 2.0413789170 atm

Understanding the Units

Standard Atmosphere (atm): The standard atmosphere is a unit of pressure defined as 101,325 pascals (Pa), which is equivalent to 760 mmHg (torr) or 29.92 inches of mercury. One standard atmosphere represents the average atmospheric pressure at sea level at a latitude of 45 degrees.

Pounds per Square Inch (psi): PSI is a unit of pressure expressed as pounds of force per square inch of area. It is commonly used in the United States and the United Kingdom for measuring tire pressure, gas pressure, and various other applications.

Historical Context

The relationship between these units comes from historical developments in pressure measurement. The standard atmosphere was defined to represent average sea-level pressure, while PSI developed from engineering applications in English-speaking countries. The precise conversion factor (14.6959487755) is derived from fundamental physical constants and the definitions of these units.

Applications

This conversion is commonly used in:

• Engineering and physics calculations
• Meteorology and weather forecasting
• Scuba diving and hyperbaric medicine
• Industrial processes involving pressurized systems
• Automotive applications (tire pressure)