# Pressure Units - Online Converter

### Pressure Converter

The calculator below can be used to convert between some common pressure units

*Value * *(use peri**od as decimal point)*

* Pa (N/m ^{2}) *

* kPa*

* bar*

* atmosphere*

* mm Hg*

* mm H _{2}O*

* m H _{2}O*

* kg _{f}/m^{2}*

* kg _{f}/cm^{2}*

* pound square feet (psf)*

* pound square inches (psi)*

* inches Hg*

* inches H _{2}O*

* ft H _{2}O*

### Pressure Converting Tables

The tables below can be used to convert between some common pressure units:

For full table -** rotate the screen!**

Multiply by | |||||||

Convert from | Convert to | ||||||

Pa (N/m^{2}) | bar | atmosphere | mm Hg | mm H_{2}O | m H_{2}O | kg/cm^{2} | |

Pa (N/m^{2}) | 1 | 10^{-5} | 9.87 10^{-6} | 0.0075 | 0.1 | 10^{-4} | 1.02 10^{-5} |

bar | 10^{5} | 1 | 0.987 | 750 | 1.0197 10^{4} | 10.197 | 1.0197 |

atmosphere | 1.01 10^{5} | 1.013 | 1 | 759.9 | 10332 | 10.332 | 1.03 |

mm Hg | 133.3 | 1.33 10^{-3} | 1.32 10^{-3} | 1 | 13.3 | 0.013 | 1.36 10^{-3} |

mm H_{2}O | 10 | 0.000097 | 9.87 10^{-5} | 0.075 | 1 | 0.001 | 1.02 10^{-4} |

m H_{2}O | 10^{4} | 0.097 | 9.87 10^{-2} | 75 | 1000 | 1 | 0.102 |

kg/cm^{2} | 9.8 10^{4} | 0.98 | 0.97 | 735 | 10000 | 10 | 1 |

pound square feet | 47.8 | 4.78 10^{-4} | 4.72 10^{-4} | 0.36 | 4.78 | 4.78 10^{-3} | 4.88 10^{-4} |

pound square inches (psi) | 6894.76 | 0.069 | 0.068 | 51.7 | 689.7 | 0.690 | 0.07 |

inches Hg | 3377 | 0.0338 | 0.033 | 25.4 | 337.7 | 0.337 | 0.034 |

inches H_{2}O | 248.8 | 2.49 10^{-3} | 2.46 10^{-3} | 1.87 | 25.4 | 0.0254 | 0.0025 |

For full table -** rotate the screen!**

Multiply by | ||||

Convert from | Convert to | |||

pound square feet | pound square inches (psi) | inches Hg | inches H_{2}O | |

Pa (N/m^{2}) | 0.021 | 1.450326 10^{-4} | 2.96 10^{-4} | 4.02 10^{-3} |

bar | 2090 | 14.50 | 29.61 | 402 |

atmosphere | 2117.5 | 14.69 | 29.92 | 407 |

mm Hg | 2.79 | 0.019 | 0.039 | 0.54 |

mm H_{2}O | 0.209 | 1.45 10^{-3} | 2.96 10^{-3} | 0.04 |

m H_{2}O | 209 | 1.45 | 2.96 | 40.2 |

kg/cm^{2} | 2049 | 14.21 | 29.03 | 394 |

pound square feet (psf) | 1 | 0.0069 | 0.014 | 0.19 |

pound square inches (psi) | 144 | 1 | 2.04 | 27.7 |

inches Hg | 70.8 | 0.49 | 1 | 13.57 |

inches H_{2}O | 5.2 | 0.036 | 0.074 | 1 |

*1 Torr = 1 mm Hg*

**Note!** - pressure is "force per unit area" and commonly used pressure units like *kg/cm*^{2} and similar are in principle not correct since *kg* is a mass unit. Mass must be multiplied with gravity *g* to be a force (weight).

### Example - Convert from 10 psi to Pa

From the table above - to convert from* psi*, multiply* psi* with *6894.76*:

*10 (psi) = 6894.76 10 (Pa) = 68947.6 Pa = 68.95 kPa*

### Some other Pressure Units

1 Pa (N/m^{2}) = 0.0000102 Atmosphere (metric)

1 Pa (N/m^{2}) = 0.0000099 Atmosphere (standard)

1 Pa (N/m^{2}) = 0.00001 Bar

1 Pa (N/m^{2}) = 10 Barad

1 Pa (N/m^{2}) = 10 Barye

1 Pa (N/m^{2}) = 0.0007501 Centimeter of mercury (0 C)

1 Pa (N/m^{2}) = 0.0101974 Centimeter of water (4 C)

1 Pa (N/m^{2}) = 10 Dyne/square centimeter

1 Pa (N/m^{2}) = 0.0003346 Foot of water (4 C)

1 Pa (N/m^{2}) = 10^{-9}Gigapascal

1 Pa (N/m^{2}) = 0.01 Hectopascal

1 Pa (N/m^{2}) = 0.0002953 Inch of mercury (0 C)

1 Pa (N/m^{2}) = 0.0002961 Inch of mercury (15.56 C)

1 Pa (N/m^{2}) = 0.0040186 Inch of water (15.56 C)

1 Pa (N/m^{2}) = 0.0040147 Inch of water (4 C)

1 Pa (N/m^{2}) = 0.0000102 Kilogram force/centimetre^{2}

1 Pa (N/m^{2}) = 0.0010197 Kilogram force/decimetre^{2}

1 Pa (N/m^{2}) = 0.101972 Kilogram force/meter^{2}

1 Pa (N/m^{2}) = 10^{-7}Kilogram force/millimeter^{2}

1 Pa (N/m^{2}) = 10^{-3}Kilopascal

1 Pa (N/m^{2}) = 10^{-7}Kilopound force/square inch

1 Pa (N/m^{2}) = 10^{-6}Megapascal

1 Pa (N/m^{2}) = 0.000102 Meter of water (4 C)

1 Pa (N/m^{2}) = 10 Microbar (barye, barrie)

1 Pa (N/m^{2}) = 7.50062 Micron of mercury (millitorr)

1 Pa (N/m^{2}) = 0.01 Millibar

1 Pa (N/m^{2}) = 0.0075006 Millimeter of mercury (0 C)

1 Pa (N/m^{2}) = 0.10207 Millimeter of water (15.56 C)

1 Pa (N/m^{2}) = 0.10197 Millimeter of water (4 C)

1 Pa (N/m^{2}) =7.5006 Millitorr

1 Pa (N/m^{2}) = 1 Newton/square meter

1 Pa (N/m^{2}) = 32.1507 Ounce force (avdp)/square inch

1 Pa (N/m^{2}) = 0.0208854 Pound force/square foot

1 Pa (N/m^{2}) = 0.000145 Pound force/square inch

1 Pa (N/m^{2}) = 0.671969 Poundal/square foot

1 Pa (N/m^{2}) = 0.0046665 Poundal/square inch

1 Pa (N/m^{2}) = 0.0000099 Standard atmosphere

1 Pa (N/m^{2}) = 0.0000093 Ton (long)/foot^{2}

1 Pa (N/m^{2}) = 10^{-7}Ton (long)/inch^{2}

1 Pa (N/m^{2}) = 0.0000104 Ton (short)/foot^{2}

1 Pa (N/m^{2}) = 0.64 10^{-7}Ton/inch^{2}

1 Pa (N/m^{2}) = 0.0075006 Torr

### psi to bar Nomogram

Download and print psi to bar Converter!

### psi to kPa Nomogram

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