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What does mpa mean? Calculator for converting pressure in bar to MPa, kgf and psi. Why do you need a pressure unit conversion calculator?

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  • The unit of measurement of pressure in SI is pascal (Russian designation: Pa; international: Pa) = N/m 2
  • Conversion table for pressure measurement units. Pa; MPa; bar; atm; mmHg.; mm H.S.; m w.st., kg/cm 2 ; psf; psi; inches Hg; inches in.st. below
  • Note, there are 2 tables and a list. Here's another useful link:
Conversion table for pressure measurement units. Pa; MPa; bar; atm; mmHg.; mm H.S.; m w.st., kg/cm 2; psf; psi; inches Hg; inches in.st. Pressure unit ratio.
In units:
Pa (N/m2) MPa bar atmosphere mmHg Art. mm in.st. m in.st. kgf/cm 2
Should be multiplied by:
Pa (N/m2) - pascal, SI unit of pressure 1 1*10 -6 10 -5 9.87*10 -6 0.0075 0.1 10 -4 1.02*10 -5
MPa, megapascal 1*10 6 1 10 9.87 7.5*10 3 10 5 10 2 10.2
bar 10 5 10 -1 1 0.987 750 1.0197*10 4 10.197 1.0197
atm, atmosphere 1.01*10 5 1.01* 10 -1 1.013 1 759.9 10332 10.332 1.03
mmHg Art., mm of mercury 133.3 133.3*10 -6 1.33*10 -3 1.32*10 -3 1 13.3 0.013 1.36*10 -3
mm w.c., mm water column 10 10 -5 0.000097 9.87*10 -5 0.075 1 0.001 1.02*10 -4
m w.st., meter of water column 10 4 10 -2 0.097 9.87*10 -2 75 1000 1 0.102
kgf/cm 2, kilogram-force per square centimeter 9.8*10 4 9.8*10 -2 0.98 0.97 735 10000 10 1
47.8 4.78*10 -5 4.78*10 -4 4.72*10 -4 0.36 4.78 4.78 10 -3 4.88*10 -4
6894.76 6.89476*10 -3 0.069 0.068 51.7 689.7 0.690 0.07
Inches Hg / inches Hg 3377 3.377*10 -3 0.0338 0.033 25.33 337.7 0.337 0.034
Inches in.st. / inchesH2O 248.8 2.488*10 -2 2.49*10 -3 2.46*10 -3 1.87 24.88 0.0249 0.0025
Conversion table for pressure measurement units. Pa; MPa; bar; atm; mmHg.; mm H.S.; m w.st., kg/cm 2; psf; psi; inches Hg; inches h.st..
To convert pressure in units: In units:
psi pound square feet (psf) psi inch / pound square inches (psi) Inches Hg / inches Hg Inches in.st. / inchesH2O
Should be multiplied by:
Pa (N/m 2) - SI unit of pressure 0.021 1.450326*10 -4 2.96*10 -4 4.02*10 -3
MPa 2.1*10 4 1.450326*10 2 2.96*10 2 4.02*10 3
bar 2090 14.50 29.61 402
atm 2117.5 14.69 29.92 407
mmHg Art. 2.79 0.019 0.039 0.54
mm in.st. 0.209 1.45*10 -3 2.96*10 -3 0.04
m in.st. 209 1.45 2.96 40.2
kgf/cm 2 2049 14.21 29.03 394
psi pound square feet (psf) 1 0.0069 0.014 0.19
psi inch / pound square inches (psi) 144 1 2.04 27.7
Inches Hg / inches Hg 70.6 0.49 1 13.57
Inches in.st. / inchesH2O 5.2 0.036 0.074 1

Detailed list of pressure units, one pascal is:

  • 1 Pa (N/m 2) = 0.0000102 Atmosphere (metric)
  • 1 Pa (N/m2) = 0.0000099 Atmosphere (standard) = Standard atmosphere
  • 1 Pa (N/m2) = 0.00001 Bar / Bar
  • 1 Pa (N/m2) = 10 Barad / Barad
  • 1 Pa (N/m2) = 0.0007501 Centimeters Hg. Art. (0°C)
  • 1 Pa (N/m2) = 0.0101974 Centimeters in. Art. (4°C)
  • 1 Pa (N/m2) = 10 Dyne/square centimeter
  • 1 Pa (N/m2) = 0.0003346 Foot of water (4 °C)
  • 1 Pa (N/m2) = 10 -9 Gigapascals
  • 1 Pa (N/m2) = 0.01
  • 1 Pa (N/m2) = 0.0002953 Dumov Hg. / Inch of mercury (0 °C)
  • 1 Pa (N/m2) = 0.0002961 InchHg. Art. / Inch of mercury (15.56 °C)
  • 1 Pa (N/m2) = 0.0040186 Dumov v.st. / Inch of water (15.56 °C)
  • 1 Pa (N/m 2) = 0.0040147 Dumov v.st. / Inch of water (4 °C)
  • 1 Pa (N/m 2) = 0.0000102 kgf/cm 2 / Kilogram force/centimetre 2
  • 1 Pa (N/m 2) = 0.0010197 kgf/dm 2 / Kilogram force/decimetre 2
  • 1 Pa (N/m2) = 0.101972 kgf/m2 / Kilogram force/meter 2
  • 1 Pa (N/m 2) = 10 -7 kgf/mm 2 / Kilogram force/millimeter 2
  • 1 Pa (N/m 2) = 10 -3 kPa
  • 1 Pa (N/m2) = 10 -7 Kilopound force/square inch
  • 1 Pa (N/m 2) = 10 -6 MPa
  • 1 Pa (N/m2) = 0.000102 Meters w.st. / Meter of water (4 °C)
  • 1 Pa (N/m2) = 10 Microbar / Microbar (barye, barrie)
  • 1 Pa (N/m2) = 7.50062 Microns Hg. / Micron of mercury (millitorr)
  • 1 Pa (N/m2) = 0.01 Millibar / Millibar
  • 1 Pa (N/m2) = 0.0075006 (0 °C)
  • 1 Pa (N/m2) = 0.10207 Millimeters w.st. / Millimeter of water (15.56 °C)
  • 1 Pa (N/m2) = 0.10197 Millimeters w.st. / Millimeter of water (4 °C)
  • 1 Pa (N/m 2) = 7.5006 Millitorr / Millitorr
  • 1 Pa (N/m2) = 1N/m2 / Newton/square meter
  • 1 Pa (N/m2) = 32.1507 Daily ounces/sq. inch / Ounce force (avdp)/square inch
  • 1 Pa (N/m2) = 0.0208854 Pounds force per square meter. ft / Pound force/square foot
  • 1 Pa (N/m2) = 0.000145 Pounds force per square meter. inch / Pound force/square inch
  • 1 Pa (N/m2) = 0.671969 Poundals per sq. ft / Poundal/square foot
  • 1 Pa (N/m2) = 0.0046665 Poundals per sq. inch / Poundal/square inch
  • 1 Pa (N/m2) = 0.0000093 Long tons per square meter. ft / Ton (long)/foot 2
  • 1 Pa (N/m2) = 10 -7 Long tons per square meter. inch / Ton (long)/inch 2
  • 1 Pa (N/m2) = 0.0000104 Short tons per square meter. ft / Ton (short)/foot 2
  • 1 Pa (N/m 2) = 10 -7 Tons per sq. inch / Ton/inch 2
  • 1 Pa (N/m2) = 0.0075006 Torr / Torr
  • pressure in pascals and atmospheres, convert pressure to pascals
  • atmospheric pressure is equal to XXX mmHg. express it in pascals
  • gas pressure units - translation
  • fluid pressure units - translation
Conversion table for pressure measurement units. Pa; MPa; bar; atm; mmHg.; mm H.S.; m w.st., kg/cm 2 ; psf; psi; inches Hg; inches in.st.

Note, there are 2 tables and a list. Here's another useful link:

Conversion table for pressure measurement units. Pa; MPa; bar; atm; mmHg.; mm H.S.; m w.st., kg/cm 2; psf; psi; inches Hg; inches in.st.
In units:
Pa (N/m2) MPa bar atmosphere mmHg Art. mm in.st. m in.st. kgf/cm 2
Should be multiplied by:
Pa (N/m2) 1 1*10 -6 10 -5 9.87*10 -6 0.0075 0.1 10 -4 1.02*10 -5
MPa 1*10 6 1 10 9.87 7.5*10 3 10 5 10 2 10.2
bar 10 5 10 -1 1 0.987 750 1.0197*10 4 10.197 1.0197
atm 1.01*10 5 1.01* 10 -1 1.013 1 759.9 10332 10.332 1.03
mmHg Art. 133.3 133.3*10 -6 1.33*10 -3 1.32*10 -3 1 13.3 0.013 1.36*10 -3
mm in.st. 10 10 -5 0.000097 9.87*10 -5 0.075 1 0.001 1.02*10 -4
m in.st. 10 4 10 -2 0.097 9.87*10 -2 75 1000 1 0.102
kgf/cm 2 9.8*10 4 9.8*10 -2 0.98 0.97 735 10000 10 1
47.8 4.78*10 -5 4.78*10 -4 4.72*10 -4 0.36 4.78 4.78 10 -3 4.88*10 -4
6894.76 6.89476*10 -3 0.069 0.068 51.7 689.7 0.690 0.07
Inches Hg / inches Hg 3377 3.377*10 -3 0.0338 0.033 25.33 337.7 0.337 0.034
Inches in.st. / inchesH2O 248.8 2.488*10 -2 2.49*10 -3 2.46*10 -3 1.87 24.88 0.0249 0.0025
Conversion table for pressure measurement units. Pa; MPa; bar; atm; mmHg.; mm H.S.; m w.st., kg/cm 2; psf; psi; inches Hg; inches h.st..
To convert pressure in units: In units:
psi pound square feet (psf) psi inch / pound square inches (psi) Inches Hg / inches Hg Inches in.st. / inchesH2O
Should be multiplied by:
Pa (N/m2) 0.021 1.450326*10 -4 2.96*10 -4 4.02*10 -3
MPa 2.1*10 4 1.450326*10 2 2.96*10 2 4.02*10 3
bar 2090 14.50 29.61 402
atm 2117.5 14.69 29.92 407
mmHg Art. 2.79 0.019 0.039 0.54
mm in.st. 0.209 1.45*10 -3 2.96*10 -3 0.04
m in.st. 209 1.45 2.96 40.2
kgf/cm 2 2049 14.21 29.03 394
psi pound square feet (psf) 1 0.0069 0.014 0.19
psi inch / pound square inches (psi) 144 1 2.04 27.7
Inches Hg / inches Hg 70.6 0.49 1 13.57
Inches in.st. / inchesH2O 5.2 0.036 0.074 1

Detailed list of pressure units:

  • 1 Pa (N/m 2) = 0.0000102 Atmosphere (metric)
  • 1 Pa (N/m2) = 0.0000099 Atmosphere (standard) = Standard atmosphere
  • 1 Pa (N/m2) = 0.00001 Bar / Bar
  • 1 Pa (N/m2) = 10 Barad / Barad
  • 1 Pa (N/m2) = 0.0007501 Centimeters Hg. Art. (0°C)
  • 1 Pa (N/m2) = 0.0101974 Centimeters in. Art. (4°C)
  • 1 Pa (N/m2) = 10 Dyne/square centimeter
  • 1 Pa (N/m2) = 0.0003346 Foot of water (4 °C)
  • 1 Pa (N/m2) = 10 -9 Gigapascals
  • 1 Pa (N/m2) = 0.01
  • 1 Pa (N/m2) = 0.0002953 Dumov Hg. / Inch of mercury (0 °C)
  • 1 Pa (N/m2) = 0.0002961 InchHg. Art. / Inch of mercury (15.56 °C)
  • 1 Pa (N/m2) = 0.0040186 Dumov v.st. / Inch of water (15.56 °C)
  • 1 Pa (N/m 2) = 0.0040147 Dumov v.st. / Inch of water (4 °C)
  • 1 Pa (N/m 2) = 0.0000102 kgf/cm 2 / Kilogram force/centimetre 2
  • 1 Pa (N/m 2) = 0.0010197 kgf/dm 2 / Kilogram force/decimetre 2
  • 1 Pa (N/m2) = 0.101972 kgf/m2 / Kilogram force/meter 2
  • 1 Pa (N/m 2) = 10 -7 kgf/mm 2 / Kilogram force/millimeter 2
  • 1 Pa (N/m 2) = 10 -3 kPa
  • 1 Pa (N/m2) = 10 -7 Kilopound force/square inch
  • 1 Pa (N/m 2) = 10 -6 MPa
  • 1 Pa (N/m2) = 0.000102 Meters w.st. / Meter of water (4 °C)
  • 1 Pa (N/m2) = 10 Microbar / Microbar (barye, barrie)
  • 1 Pa (N/m2) = 7.50062 Microns Hg. / Micron of mercury (millitorr)
  • 1 Pa (N/m2) = 0.01 Millibar / Millibar
  • 1 Pa (N/m2) = 0.0075006 Millimeter of mercury (0 °C)
  • 1 Pa (N/m2) = 0.10207 Millimeters w.st. / Millimeter of water (15.56 °C)
  • 1 Pa (N/m2) = 0.10197 Millimeters w.st. / Millimeter of water (4 °C)
  • 1 Pa (N/m 2) = 7.5006 Millitorr / Millitorr
  • 1 Pa (N/m2) = 1N/m2 / Newton/square meter
  • 1 Pa (N/m2) = 32.1507 Daily ounces/sq. inch / Ounce force (avdp)/square inch
  • 1 Pa (N/m2) = 0.0208854 Pounds force per square meter. ft / Pound force/square foot
  • 1 Pa (N/m2) = 0.000145 Pounds force per square meter. inch / Pound force/square inch
  • 1 Pa (N/m2) = 0.671969 Poundals per sq. ft / Poundal/square foot
  • 1 Pa (N/m2) = 0.0046665 Poundals per sq. inch / Poundal/square inch
  • 1 Pa (N/m2) = 0.0000093 Long tons per square meter. ft / Ton (long)/foot 2
  • 1 Pa (N/m2) = 10 -7 Long tons per square meter. inch / Ton (long)/inch 2
  • 1 Pa (N/m2) = 0.0000104 Short tons per square meter. ft / Ton (short)/foot 2
  • 1 Pa (N/m 2) = 10 -7 Tons per sq. inch / Ton/inch 2
  • 1 Pa (N/m2) = 0.0075006 Torr / Torr
Conversion table for pressure measurement units. Pa; MPa; bar; atm; mmHg.; mm H.S.; m w.st., kg/cm 2 ; psf; psi; inches Hg; inches in.st.

Note, there are 2 tables and a list. Here's another useful link:

Conversion table for pressure measurement units. Pa; MPa; bar; atm; mmHg.; mm H.S.; m w.st., kg/cm 2; psf; psi; inches Hg; inches in.st.
In units:
Pa (N/m2) MPa bar atmosphere mmHg Art. mm in.st. m in.st. kgf/cm 2
Should be multiplied by:
Pa (N/m2) 1 1*10 -6 10 -5 9.87*10 -6 0.0075 0.1 10 -4 1.02*10 -5
MPa 1*10 6 1 10 9.87 7.5*10 3 10 5 10 2 10.2
bar 10 5 10 -1 1 0.987 750 1.0197*10 4 10.197 1.0197
atm 1.01*10 5 1.01* 10 -1 1.013 1 759.9 10332 10.332 1.03
mmHg Art. 133.3 133.3*10 -6 1.33*10 -3 1.32*10 -3 1 13.3 0.013 1.36*10 -3
mm in.st. 10 10 -5 0.000097 9.87*10 -5 0.075 1 0.001 1.02*10 -4
m in.st. 10 4 10 -2 0.097 9.87*10 -2 75 1000 1 0.102
kgf/cm 2 9.8*10 4 9.8*10 -2 0.98 0.97 735 10000 10 1
47.8 4.78*10 -5 4.78*10 -4 4.72*10 -4 0.36 4.78 4.78 10 -3 4.88*10 -4
6894.76 6.89476*10 -3 0.069 0.068 51.7 689.7 0.690 0.07
Inches Hg / inches Hg 3377 3.377*10 -3 0.0338 0.033 25.33 337.7 0.337 0.034
Inches in.st. / inchesH2O 248.8 2.488*10 -2 2.49*10 -3 2.46*10 -3 1.87 24.88 0.0249 0.0025
Conversion table for pressure measurement units. Pa; MPa; bar; atm; mmHg.; mm H.S.; m w.st., kg/cm 2; psf; psi; inches Hg; inches h.st..
To convert pressure in units: In units:
psi pound square feet (psf) psi inch / pound square inches (psi) Inches Hg / inches Hg Inches in.st. / inchesH2O
Should be multiplied by:
Pa (N/m2) 0.021 1.450326*10 -4 2.96*10 -4 4.02*10 -3
MPa 2.1*10 4 1.450326*10 2 2.96*10 2 4.02*10 3
bar 2090 14.50 29.61 402
atm 2117.5 14.69 29.92 407
mmHg Art. 2.79 0.019 0.039 0.54
mm in.st. 0.209 1.45*10 -3 2.96*10 -3 0.04
m in.st. 209 1.45 2.96 40.2
kgf/cm 2 2049 14.21 29.03 394
psi pound square feet (psf) 1 0.0069 0.014 0.19
psi inch / pound square inches (psi) 144 1 2.04 27.7
Inches Hg / inches Hg 70.6 0.49 1 13.57
Inches in.st. / inchesH2O 5.2 0.036 0.074 1

Detailed list of pressure units:

  • 1 Pa (N/m 2) = 0.0000102 Atmosphere (metric)
  • 1 Pa (N/m2) = 0.0000099 Atmosphere (standard) = Standard atmosphere
  • 1 Pa (N/m2) = 0.00001 Bar / Bar
  • 1 Pa (N/m2) = 10 Barad / Barad
  • 1 Pa (N/m2) = 0.0007501 Centimeters Hg. Art. (0°C)
  • 1 Pa (N/m2) = 0.0101974 Centimeters in. Art. (4°C)
  • 1 Pa (N/m2) = 10 Dyne/square centimeter
  • 1 Pa (N/m2) = 0.0003346 Foot of water (4 °C)
  • 1 Pa (N/m2) = 10 -9 Gigapascals
  • 1 Pa (N/m2) = 0.01
  • 1 Pa (N/m2) = 0.0002953 Dumov Hg. / Inch of mercury (0 °C)
  • 1 Pa (N/m2) = 0.0002961 InchHg. Art. / Inch of mercury (15.56 °C)
  • 1 Pa (N/m2) = 0.0040186 Dumov v.st. / Inch of water (15.56 °C)
  • 1 Pa (N/m 2) = 0.0040147 Dumov v.st. / Inch of water (4 °C)
  • 1 Pa (N/m 2) = 0.0000102 kgf/cm 2 / Kilogram force/centimetre 2
  • 1 Pa (N/m 2) = 0.0010197 kgf/dm 2 / Kilogram force/decimetre 2
  • 1 Pa (N/m2) = 0.101972 kgf/m2 / Kilogram force/meter 2
  • 1 Pa (N/m 2) = 10 -7 kgf/mm 2 / Kilogram force/millimeter 2
  • 1 Pa (N/m 2) = 10 -3 kPa
  • 1 Pa (N/m2) = 10 -7 Kilopound force/square inch
  • 1 Pa (N/m 2) = 10 -6 MPa
  • 1 Pa (N/m2) = 0.000102 Meters w.st. / Meter of water (4 °C)
  • 1 Pa (N/m2) = 10 Microbar / Microbar (barye, barrie)
  • 1 Pa (N/m2) = 7.50062 Microns Hg. / Micron of mercury (millitorr)
  • 1 Pa (N/m2) = 0.01 Millibar / Millibar
  • 1 Pa (N/m2) = 0.0075006 Millimeter of mercury (0 °C)
  • 1 Pa (N/m2) = 0.10207 Millimeters w.st. / Millimeter of water (15.56 °C)
  • 1 Pa (N/m2) = 0.10197 Millimeters w.st. / Millimeter of water (4 °C)
  • 1 Pa (N/m 2) = 7.5006 Millitorr / Millitorr
  • 1 Pa (N/m2) = 1N/m2 / Newton/square meter
  • 1 Pa (N/m2) = 32.1507 Daily ounces/sq. inch / Ounce force (avdp)/square inch
  • 1 Pa (N/m2) = 0.0208854 Pounds force per square meter. ft / Pound force/square foot
  • 1 Pa (N/m2) = 0.000145 Pounds force per square meter. inch / Pound force/square inch
  • 1 Pa (N/m2) = 0.671969 Poundals per sq. ft / Poundal/square foot
  • 1 Pa (N/m2) = 0.0046665 Poundals per sq. inch / Poundal/square inch
  • 1 Pa (N/m2) = 0.0000093 Long tons per square meter. ft / Ton (long)/foot 2
  • 1 Pa (N/m2) = 10 -7 Long tons per square meter. inch / Ton (long)/inch 2
  • 1 Pa (N/m2) = 0.0000104 Short tons per square meter. ft / Ton (short)/foot 2
  • 1 Pa (N/m 2) = 10 -7 Tons per sq. inch / Ton/inch 2
  • 1 Pa (N/m2) = 0.0075006 Torr / Torr

Pressure unit conversion table

Unit Pa kPa MPa kgf/m 2 kgf/cm 2 mmHg. mm water column bar
1 Pascal 1 10 -3 10 -6 0,1019716 10,19716*10 -6 0,00750062 0,1019716 0,00001
1 Kilopascal 1000 1 10 -3 101,9716 0,01019716 7,50062 101,9716 0,01
1 Megapascal 1000000 1000 1 101971,6 10,19716 7500,62 101971,6 10
1 Kilogram-force per square meter 9,80665 9,80665*10 -3 9,80665*10 -6 1 0,0001 0,0735559 1 98,0665*10 -6
1 Kilogram-force per square centimeter 98066,5 98,0665 0,0980665 10000 1 735,559 10000 0,980665
1 Millimeter of mercury (at 0 degrees) 133,3224 0,1223224 0,0001333224 13,5951 0,00135951 1 13,5951 0,00133224
1 Millimeter of water column (at 0 degrees) 9,80665 9,807750*10 -3 9,80665*10 -6 1 0,0001 0,0735559 1 98,0665*10 -6
1 Bar 100000 100 0,1 10197,16 1,019716 750,062 10197,16 1

The relationship between some units:

Bar:
1 bar = 0.1 MPa
1 bar = 100 kPa
1 bar = 1000 mbar
1 bar = 1.019716 kgf/cm2
1 bar = 750 mmHg (torr)
1 bar = 10197.16 kgf/m2 (atm.tech.)
1 bar = 10197.16 mm. water Art.
1 bar = 0.98692326672 atm. physical
1 bar = 10 N/cm2
1 bar = 1000000 dyne/cm2=106 dyne/cm2
1 bar = 14.50377 psi (pounds per square inch)
1 mbar = 0.1 kPa
1 mbar = 0.75 mm. rt. st.(torr)
1 mbar = 10.19716 kgf/m2
1 mbar = 10.19716 mm. water Art.
1 mbar = 0.401463 in.H2O (inch of water)

KGS/SM2 (ATM.TECH.):
1 kgf/cm2 = 0.0980665 MPa
1 kgf/cm2 = 98.0665 kPa
1 kgf/cm2 = 0.980665 bar
1 kgf/cm2 = 980.665 mbar
1 kgf/cm2 = 736 mmHg. (torr)
1 kgf/cm2 = 10000 mm.water column.
1 kgf/cm2 = 0.968 atm. physical
1 kgf/cm2 = 14.22334 psi
1 kgf/cm2 = 9.80665 N/cm2
1 kgf/cm2 = 98066.5 N/m2
1 kgf/cm2 = 10000 kgf/m2
1 kgf/cm2 = 0.01 kgf/mm2

MPa:
1 MPa = 1000000 Pa
1 MPa = 1000 kPa
1 MPa = 10.19716 kgf/cm2 (atm.tech.)
1 MPa = 10 bar
1 MPa = 7500 mm. rt. st.(torr)
1 MPa = 101971.6 mm. water Art.
1 MPa = 101971.6 kgf/m2
1 MPa = 9.87 atm. physical
1 MPa = 106 N/m2
1 MPa = 107 dynes/cm2
1 MPa = 145.0377 psi
1 MPa = 4014.63 in.H2O

MMHG. (TORR)
1 mmHg = 133.3 10-6 MPa
1 mmHg = 0.1333 kPa
1 mmHg = 133.3 Pa
1 mmHg = 13.6 10-4 kgf/cm2
1 mmHg = 13.33 10-4 bar
1 mmHg = 1.333 mbar
1 mmHg = 13.6 mm.water column.
1 mmHg = 13.16 10-4 atm. physical
1 mmHg = 13.6 kgf/m2
1 mmHg = 0.019325 psi
1 mmHg = 75.051 N/cm2

kPa:
1 kPa = 1000 Pa
1 kPa = 0.001 MPa
1 kPa = 0.01019716 kgf/cm2
1 kPa = 0.01 bar
1 kPa = 7.5 mm. rt. st.(torr)
1 kPa = 101.9716 kgf/m2
1 kPa = 0.00987 atm. physical
1 kPa = 1000 N/m2
1 kPa =10000 dyne/cm2
1 kPa = 10 mbar
1 kPa = 101.9716 mm. water Art.
1 kPa = 4.01463 in.H2O
1 kPa = 0.1450377 psi
1 kPa = 0.1 N/cm2

MM.WATER.ST.(KGS/M2):
1 mm.water column = 9.80665 10 -6 MPa
1 mm.water column = 9.80665 10 -3 kPa
1 mm.water column = 0.980665 10-4 bar
1 mm.water column = 0.0980665 mbar
1 mm.water column = 0.968 10-4 atm.physical.
1 mm.water column = 0.0736 mmHg (torr)
1 mm.water column = 0.0001 kgf/cm2
1 mm.water column = 9.80665 Pa
1 mm.water column = 9.80665 10-4 N/cm2
1 mm.water column = 703.7516 psi

We deliberately do not suggest that you use an automatic converter to achieve instant results, but we suggest that you familiarize yourself with reference information that may help you understand the meaning and mechanism of converting pressure measurement units, and will allow you to learn how to independently convert the original data into the required ones. We are convinced that such skills will be more useful than machine calculations and may prove more effective in the future. In production, sometimes you need to quickly navigate a situation, and to do this you need to have an idea of ​​the relationship between the main units of measurement. For example, several years ago Russia “transitioned” in metrology from one basic unit of pressure measurement to another, so it became important to be able to independently quickly convert values ​​from kgf/cm2 to MPa, kgf/cm2 to kPa. Having remembered how many kgf/cm2 or kPa are in 1 MPa, you can easily translate the values ​​“in your head” without outside help.

Below are the pressure units that are used to describe the parameters of compressor equipment, blowers and vacuum pumps

Relationship between pressure units
MPa bar mmHg. atm. kgf/cm2 PSI
1 MPa = 1 10 7500,7 9,8692 10,197 145,04
1 bar = 0,1 1 750,07 0,98692 1,0197 14,504
1mmHg= 133.32 Pa 1,333*10 -3 1 1,316*10 -3 1,359*10 -3 0,01934
1 atm. = 0,10133 1,0133 760 1 1,0333 14,696
1 kgf/cm 2 = 0,098066 0,98066 735,6 0,96784 1 14,223
1 PSI = 6.8946 kPa 0,068946 51,715 0,068045 0, 070307 1

The table gives the following designations: MPa - megapascal or 10 6 Pa (Pascals), 1 Pa = 1 N/m 2; mmHg. - millimeter of mercury; atm. - physical atmosphere; at. =1 kgf/cm 2 - technical atmosphere; PSI (pounds per square inch) - pound per square inch (a unit of pressure used in the US and UK).

The pressure value can be counted from 0 (absolute pressure or ground in English terminology) or from atmospheric pressure (excess pressure or induced in English). If, for example, pressure is measured in technical atmospheres, then absolute pressure is designated as ata, and excess pressure as ati, for example, 9 ata, 8 ati.

Units for measuring the performance of compressors and vacuum pumps

Compressor performance is measured as the volume of gas compressed per unit of time. The basic unit used is cubic meter per minute (m 3 /min). The units used are l/min. (1 l/min = 0.001 m 3 /min.), m 3 /hour (1 m 3 /hour = 1/60 m 3 /min.), l/s (1 l/s = 60 l/min. = 0.06 m 3 /min). Productivity is usually given either for suction conditions (gas pressure and temperature) or for normal conditions (pressure 1 atm., temperature 0 o C). In the latter case, the letter “n” is placed in front of the unit of volume (for example, 5 nm 3 /min). In English-speaking countries, cubic foot per minute (CFM) is used as a unit of productivity. 1 CFM = 28.3168 l/min. = 0.02832 m 3 /min. 1 m 3 /min =35.314 CFM.



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