Pressure Converters: Bar, PSI, Pascals and mmHg
Pressure units depend on the job: tyres are often in psi or bar, weather in millibars or hectopascals, blood pressure in millimetres of mercury and science in pascals. Each converter here handles one pair in both directions.
The pages show the exact factor and a table of common values, such as typical tyre pressures and standard atmospheric pressure, with worked examples.
Bar to Pounds per Square Inch ConverterConvert bar to pounds per square inch (bar to psi) with the formula and a quick table.Pounds per Square Inch to Bar ConverterConvert pounds per square inch to bar (psi to bar) with the formula and a quick table.Kilopascals to Pounds per Square InchConvert kilopascals to pounds per square inch (kPa to psi) with the formula and a quick table.Pounds per Square Inch to KilopascalsConvert pounds per square inch to kilopascals (psi to kPa) with the formula and a quick table.Millimetres of Mercury to KilopascalsConvert millimetres of mercury to kilopascals (mmHg to kPa) with the formula and a quick table.Kilopascals to Millimetres of MercuryConvert kilopascals to millimetres of mercury (kPa to mmHg) with the formula and a quick table.Inches of Mercury to Hectopascals ConverterConvert inches of mercury to hectopascals (inHg to hPa) with the formula and a quick table.Hectopascals to Inches of Mercury ConverterConvert hectopascals to inches of mercury (hPa to inHg) with the formula and a quick table.Pressure ConverterConvert pascals, bar, psi, atmospheres, mmHg and inHg in one go.
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