Pressure Unit Converter

Pressure Unit Converter is evaluated from Pressure Value and From Unit. The calculation reports PSI, Bar and Atmospheres.

Results

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About the Pressure Unit Converter

Pressure Unit Converter is treated here as a quantitative relation between Pressure Value and From Unit and PSI, Bar, Atmospheres and mmHg.

The calculator uses a multi formula configuration. Each reported value is read as a direct evaluation of the stored rules with the declared field formats and units.

Formula basis:
1 PSI = 6,894.76 Pa
1 bar = 100,000 Pa
1 atm = 101,325 Pa
1 mmHg = 133.322 Pa
1 kPa = 1,000 Pa
1 inHg = 3,386.39 Pa
1 mbar = 100 Pa

Interpret the outputs in the order shown by the result fields. Optional inputs affect only the outputs that depend on those variables.

Formula & How It Works

The calculation applies the following relations exactly as recorded in the metadata:

1 PSI = 6,894.76 Pa
1 bar = 100,000 Pa
1 atm = 101,325 Pa
1 mmHg = 133.322 Pa
1 kPa = 1,000 Pa
1 inHg = 3,386.39 Pa
1 mbar = 100 Pa

Each output field is produced by substituting the supplied inputs into the relevant relation and then applying the declared rounding or text format.

Worked Examples

Example 1: Car Tire Pressure: 32 PSI

Inputs

value: 32 from_unit: PSI
PSI: 32 psi. Bar: 2.20632 bar. Atmospheres: 2.17747 atm. mmHg: 1,654.883 mmHg. Kilopascals: 220.6323 kPa. Inches of Mercury: 65.1527 inHg. Millibars: 2,206.323 mbar

With Pressure Value = 32 and From Unit = PSI as the stated inputs, the result is PSI = 32 psi, Bar = 2.20632 bar and Atmospheres = 2.17747 atm. Each value corresponds to the declared output fields.

Example 2: Normal Blood Pressure: 120/80 mmHg

Inputs

value: 120 from_unit: mmHg (torr)
PSI: 2.3204 psi. Bar: 0.15999 bar. Atmospheres: 0.15789 atm. mmHg: 120 mmHg. Kilopascals: 15.9986 kPa. Inches of Mercury: 4.7244 inHg. Millibars: 159.986 mbar

With Pressure Value = 120 and From Unit = mmHg (torr) as the stated inputs, the result is PSI = 2.3204 psi, Bar = 0.15999 bar and Atmospheres = 0.15789 atm. Each value corresponds to the declared output fields.

Example 3: Weather Barometer: 30 inHg

Inputs

value: 30 from_unit: inHg
PSI: 14.7346 psi. Bar: 1.01592 bar. Atmospheres: 1.00263 atm. mmHg: 762.003 mmHg. Kilopascals: 101.5917 kPa. Inches of Mercury: 30 inHg. Millibars: 1,015.917 mbar

With Pressure Value = 30 and From Unit = inHg as the stated inputs, the result is PSI = 14.7346 psi, Bar = 1.01592 bar and Atmospheres = 1.00263 atm. Each value corresponds to the declared output fields.

Example 4: SCUBA Diving: 3 atm (66 ft depth)

Inputs

value: 3 from_unit: atmospheres (atm)
PSI: 44.0878 psi. Bar: 3.03975 bar. Atmospheres: 3 atm. mmHg: 2,280.006 mmHg. Kilopascals: 303.975 kPa. Inches of Mercury: 89.7637 inHg. Millibars: 3,039.75 mbar

With Pressure Value = 3 and From Unit = atmospheres (atm) as the stated inputs, the result is PSI = 44.0878 psi, Bar = 3.03975 bar and Atmospheres = 3 atm. Each value corresponds to the declared output fields.

Common Use Cases

  • Convert tire pressure from PSI to bar
  • Convert blood pressure from mmHg to kPa
  • Convert atmospheric pressure from inHg to mbar