Pressure Units  Online Converter
Convert between pressure units like Pa, bar, atmosphere, pound square feet, psi and more.
Pressure Converter
The calculator below can be used to convert between some common pressure units
Pressure Converting Tables
The tables below can be used to convert between some common pressure units:
For full table  rotate the screen!
Convert from  Multiply by  
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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!
Convert from  Multiply by  
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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