Pressure Converter - Convert PSI, Pa, Bar & More
Pressure Converter
Easily convert between Pascals (Pa), Kilopascals (kPa), Bars, Atmospheres (atm), Pounds per Square Inch (psi), Millimeters of Mercury (mmHg), and Torr. Whether you're in engineering, meteorology, chemistry, or tire maintenance, this tool helps you get fast and accurate conversions.
Why Use It?
- Ideal for lab experiments, weather forecasting, mechanical systems, and industrial applications.
- Converts between metric (SI) and imperial pressure units.
- Accurate to four decimal places.
- Great for students, professionals, and hobbyists alike.
Popular Conversions
Common Pressure Units and Their Uses
Pascals (Pa)
SI unit of pressure.
Kilopascals (kPa)
1,000 Pascals.
Bar
Used in weather, diving, engines.
Atmospheres (atm)
Based on average sea-level pressure.
Pounds per Square Inch (psi)
U.S. unit for tires and gas pressure.
Millimeters of Mercury (mmHg)
Medical/scientific use, e.g., blood pressure.
Torr
Equivalent to mmHg. Used in vacuum.
Real-World Use Cases for Pressure Conversion
Tire pressure
Check and convert tire pressures across unit systems.
Scientific labs
Convert lab pressure measurements for experiments.
Weather
Interpret barometric pressure data in weather reports.
Industrial systems
Convert pressures in hydraulics or pneumatics for machinery.
HVAC & gas systems
Design heating, ventilation, and gas systems accurately.
Frequently Asked Questions
What is the standard atmospheric pressure?
Standard atmospheric pressure is defined as 101,325 Pascals, or 1 atm. This is equivalent to 760 mmHg, 14.696 psi, or 1.01325 bar.
Are mmHg and Torr the same?
Practically, yes. 1 Torr is defined as exactly 1/760 of an atmosphere, which makes it nearly equal to 1 mmHg. They are often used interchangeably in vacuum and medical measurements.
Why are there so many pressure units?
Pressure units evolved from different measurement systems (metric vs imperial), and different industries adopted specific units for convenience. For example, psi is common in the US, while Pascals and bars are widely used elsewhere.