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Pressure Converter

Convert pressure between pascals, kilopascals, bar, psi, atmospheres, torr, mmHg, and technical engineering units.

Convert instantly
Enter a value and choose the units. Your answer updates as you type.

Result

0.001 Kilopascal (kPa)

Quick reference
  • Pascal (Pa)1 base units
  • Kilopascal (kPa)1000 base units
  • Megapascal (MPa)1000000 base units
  • Bar100000 base units
  • Pound-force per square inch (psi)6894.757293168 base units
  • Standard atmosphere (atm)101325 base units
  • Torr133.32236842105263 base units

About the Pressure Converter

Pressure appears in tire gauges, weather reports, medical readings, hydraulics, and process engineering. This converter uses the pascal as the SI base and distinguishes standard atmosphere, torr, and mmHg. The torr is defined as one 760th of a standard atmosphere; mmHg is shown with its conventional mercury-column factor.

Convert readings instantly without mixing gauge and absolute pressure concepts: for example, 1 bar is approximately 100 kPa. These are unit conversions, not an adjustment for atmospheric pressure. For gas and heat calculations, the Temperature Converter and Energy Converter provide useful related tools.

Frequently asked questions

How many psi are in one bar?

One bar equals approximately 14.5037738 psi.

Are torr and mmHg identical?

They are conventionally treated as nearly identical in many applications; this tool uses torr as atm/760 and the conventional mmHg factor.

What is standard atmospheric pressure?

One standard atmosphere is exactly 101,325 pascals, or 1013.25 hectopascals.

Take this calculation further

Browse the converters calculators collection for more tools in this subject.

For a related calculation, use Torque & Moment of Force Converter to convert torque and moment of force between newton meters, pound-feet, kilogram-force meters, dyne centimeters, and more. Alternatively, use Force Converter to convert force between newtons, kilonewtons, pound-force, kilogram-force, dynes, and related engineering units.

For the underlying method, read A Quick Guide to Temperature Conversion Formulas.