What Is a Pressure Converter?
A pressure converter transforms values between pressure units including Pascal (Pa), bar, PSI, atmosphere (atm), torr, and mmHg. It is essential for meteorology, engineering, automotive, and medical applications.
How to Use This Pressure Converter
- Enter the pressure value to convert.
- Select the source unit (e.g., PSI).
- Choose the target unit (e.g., bar) and view the result.
Key Concepts
The Pascal (Pa) is the SI unit of pressure (1 N/m²). Key conversions: 1 bar = 100,000 Pa. 1 atm = 101,325 Pa = 14.696 PSI. 1 PSI = 6,894.76 Pa. 1 torr = 133.322 Pa. Standard atmospheric pressure at sea level is 1 atm = 1.01325 bar = 760 mmHg. Tire pressure is typically measured in PSI (US) or bar (metric countries).
Result = Value × (From Factor ÷ To Factor)
Frequently Asked Questions
What is standard atmospheric pressure?
Standard atmospheric pressure is defined as 101,325 Pa (1 atm), which equals 1.01325 bar, 14.696 PSI, or 760 mmHg. This is the average air pressure at sea level.
Why do weather reports use hectopascals?
One hectopascal (hPa) equals 1 millibar. Meteorologists use hPa because typical atmospheric pressures read as convenient numbers around 1013 hPa, the same as millibars.
What PSI should my tires be?
Most passenger cars recommend 30-35 PSI (2.1-2.4 bar). Always check the sticker on your door jamb for the manufacturer recommendation, not the maximum rating on the tire.