Pressure Converter

• Pascal to Psi1 Pa = 0.000145038 psi
• Psi to Pascal1 psi = 6,894.76 Pa
• Pascal to Kilopascal1 Pa = 0.001 kPa
• Pascal to Megapascal1 Pa = 1e-6 MPa
• Pascal to Hectopascal1 Pa = 0.01 hPa
• Pascal to Bar1 Pa = 1e-5 bar
• Pascal to Millibar1 Pa = 0.01 mbar
• Pascal to Ksi1 Pa = 1.4504e-7 ksi
• Pascal to Atmosphere1 Pa = 9.8692e-6 atm
• Pascal to Torr1 Pa = 0.00750064 Torr
• Pascal to Mm of Mercury1 Pa = 0.00750064 mmHg
• Pascal to Inch of Mercury1 Pa = 0.0002953 inHg

All 25 pressure units are converted through a single base unit, so any unit can be converted to any other. Enter a value, choose the units and press Convert, or open a conversion page for the exact factor and a reference table.

For example, 1 pascal (Pa) = 0.000145038 psi (psi).

Pascal (Pa)

The pascal is the SI unit of pressure, one newton per square meter. It is a small unit: atmospheric pressure is about 101,325 Pa.

Kilopascal (kPa)

A kilopascal is 1,000 pascals. Tyre pressures in metric countries and weather pressures are often given in kPa; standard atmospheric pressure is 101.325 kPa.

Megapascal (MPa)

A megapascal is one million pascals, or one newton per square millimeter. Material strengths and hydraulic pressures are specified in MPa.

Hectopascal (hPa)

A hectopascal is 100 pascals, identical to a millibar. Weather forecasts report atmospheric pressure in hPa, typically around 1,013.

Bar (bar)

A bar is exactly 100,000 pascals, very close to average atmospheric pressure at sea level. Tyre pressures and scuba tanks are often rated in bar.

Millibar (mbar)

A millibar is one thousandth of a bar, exactly 100 pascals (1 hPa). It is the traditional unit on weather maps.

Psi (psi)

Pounds per square inch is the pressure of one pound-force on an area of one square inch, about 6,895 pascals. Tyre pressures in the United States are given in psi.

Ksi (ksi)

A ksi is 1,000 psi, about 6.895 megapascals. It is used for the strength of steel and other materials in US engineering.

Inch of Mercury (inHg)

An inch of mercury is about 3,386 pascals. US weather reports and aircraft altimeters give barometric pressure in inHg, typically near 29.92.

Inch of Water (inH₂O)

An inch of water is the pressure of a column of water 1 inch high, about 249 pascals. It is used for ventilation ducts and low gas pressures.

Atmosphere (atm)

A standard atmosphere is defined as exactly 101,325 pascals, roughly the average air pressure at sea level. It is about 14.7 psi or 1.013 bar.

Mm of Mercury (mmHg)

A millimeter of mercury is the pressure exerted by a column of mercury 1 mm high, about 133.3 pascals. Blood pressure is measured in mmHg.

Torr (Torr)

A torr is 1/760 of a standard atmosphere, about 133.3 pascals, and is nearly identical to a millimeter of mercury. It is common in vacuum work.

• ForceNewtons, pound-force, dynes and more.
• EnergyJoules, calories, kilowatt-hours and more.
• TorqueNewton-meters, pound-feet and more.
• AccelerationMeters per second squared, g-force and more.
• DensityKilograms per cubic meter, g/cm³ and more.