Sl unit (International unit) of pressure value

Sl unit (International unit)

In line with the revision of the Measurement Law, the SI unit system was adopted as international unit in place of the gravitational unit system conventionally used so far.

As a result, “Pa (Pascal)” of the SI unit is used these days in place of “kgf/c㎡ (kg/c㎡)” and “cmHg (mmHg)” which have been generally used for the unit of pressure.

As the unit for pressure gauges, MPa (Megapascal) or kPa (Kilopascal) is used.

1MPa = 1,000kPa = 1,000,000Pa ≒ 10.197kgf/c㎡

Conversion formula

  • From the conventional unit to Sl unit
    • [・・・・・・・・] MPa = [・・・・・・・・] kgf/c㎡ × 0.0980665
    • [・・・・・・・・] MPa = [・・・・・・・・] cm Hg × 0.0013332

Conversion table

MPaMegapascal10.09810.001330.10.101320.06894
kgf/c㎡
(kg/c㎡)
Weight kilogram
per square centimeter
10.19710.0135951.01971.03320.0703
cm HgCentimeter of
mercury
750.0673.56175.006765.171
barBar100.98070.013311.01330.0689
atmAtmospheric
pressure
9.8690.96780.013160.986910.068
lbw/in2
(lb/in2)
(psi)
Weight pound
per square inch
145.0314.2230.193314.50314.71

※ Use this table as a guide for approximate conversion values.


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