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
| MPa | Megapascal | 1 | 0.0981 | 0.00133 | 0.1 | 0.10132 | 0.06894 |
| kgf/c㎡ （kg/c㎡） | Weight kilogram per square centimeter | 10.197 | 1 | 0.013595 | 1.0197 | 1.0332 | 0.0703 |
| cm Hg | Centimeter of mercury | 750.6 | 73.56 | 1 | 75.006 | 76 | 5.171 |
| bar | Bar | 10 | 0.9807 | 0.0133 | 1 | 1.0133 | 0.0689 |
| atm | Atmospheric pressure | 9.869 | 0.9678 | 0.01316 | 0.9869 | 1 | 0.068 |
| lbw/in2 （lb/in2） （psi） | Weight pound per square inch | 145.03 | 14.223 | 0.1933 | 14.503 | 14.7 | 1 |
※ Use this table as a guide for approximate conversion values.
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