kg/cm² to PSI Converter

Hydraulic system ratings from Japanese, Korean, and Taiwanese manufacturers.

Legacy European equipment documentation and pneumatic system pressure switch settings.

In the global hydraulic equipment market, Japanese OEMs (Kawasaki, Yuken, Nachi, Daikin) and Korean OEMs (Tong Yang, Woosung) rate their hydraulic pumps, valves, and cylinders in kg/cm² — a 210 kg/cm² (2,987 psi) hydraulic system rating is the Asian equivalent of 21 MPa or 207 bar, and engineering teams integrating Asian hydraulic components into US or European systems must convert at every interface.

The Japanese JIS B 8354 (hydraulic cylinder standard) and JIS B 2005 (pressure gauge standard) use kg/cm² as the primary pressure unit, with the conversion to MPa or psi appearing in international datasheets and CE marking documentation.

Industrial pneumatic control systems built by SMC, CKD, or Koganei in Japan use kg/cm² for both component ratings (a 10 kg/cm² pneumatic cylinder is 142 psi) and for compressed air supply pressure (7 kg/cm² shop air is 100 psi), with the conversion applied when integrating with North American or European pneumatic systems.

Pressure vessel fabrication in Korea, China, India, and Taiwan uses kg/cm² on the nameplate and in the design documentation, with the conversion to psi (or bar, MPa) for ASME or PED code stamping.

Chinese GB 150 pressure vessel standard and the related manufacturing codes use kg/cm² alongside MPa, and the equipment nameplate may carry both values — engineering teams working on Chinese-fabricated pressure equipment for installation in the US or Europe need the conversion at the certification boundary.

Older European process equipment from the 1960s-1980s (German AEG, French Schneider, Italian Breda) used kg/cm² as the standard pressure unit before the EU metric harmonization, and many of these legacy systems are still in service in older refineries, chemical plants, and power stations — the conversion is needed for maintenance, repair, and replacement part ordering.

Russian GOST pressure equipment standards use kg/cm² (along with kgf/cm²) on legacy documentation, and the conversion is essential for engineering teams supporting Russian-built equipment in international facilities.

Marine boiler and pressure vessel classification (Lloyd's Register, DNV, Bureau Veritas) historically used kg/cm² for Asian-built vessels and psi for US-built vessels, with the conversion required for survey and certification documentation on international shipyards.