Pressure(mechanical stress) unit conversion table

This table contains conversions between almost all pressure(mechanical stress) units. Some units of pressure(mechanical stress) are common and some are relatively rare. This is a good query tool.  Pressure Converter

Name of unitSymbolDefinitionRelation to SI units
atmosphere(standard)atm101 325 Pa
atmosphere(technical)at≡ 1 kgf/cm 2= 9.806 65×10 4 Pa
barbar≡ 10 5Pa
barye ( cgs unit) ≡ 1 dyn/cm 2= 0.1 Pa
centimetre of mercurycmHg13 595.1 kg/m 3× 1 cm × ɡ01.333 22×10 3 Pa
centimetre of water(4 °C)cmH 2O≈ 999.972 kg/m 3× 1 cm × ɡ098.0638 Pa
footof mercury (conventional)ftHg13 595.1 kg/m 3× 1 ft × ɡ04.063 666×10 4 Pa
footof water(39.2 °F)ftH 2O≈ 999.972 kg/m 3× 1 ft × ɡ02.988 98×10 3 Pa
inch of mercury(conventional)inHg13 595.1 kg/m 3× 1 in × ɡ03.386 389×10 3 Pa
inchof water(39.2 °F)inH 2O≈ 999.972 kg/m 3× 1 in × ɡ0249.082 Pa
kilogram-force per square millimetrekgf/mm 2≡ 1 kgf/mm 2= 9.806 65×10 6 Pa
kipper square inchksi≡ 1 kipf/sq in6.894 757×10 6 Pa
long tonper square foot ≡ 1 long ton × ɡ0/ 1 sq ft1.072 5178011595×10 5 Pa
micrometre of mercuryμmHg13 595.1 kg/m 3× 1 μm × ɡ0≈ 0.001 torr0.133 3224 Pa
millimetre of mercury mmHg13 595.1 kg/m 3× 1 mm × ɡ0≈ 1 torr133.3224 Pa
millimetre of water(3.98 °C)mmH 2O≈ 999.972 kg/m 3× 1 mm × ɡ0= 0.999 972 kgf/m 2= 9.806 38 Pa
pascal(SI unit)Pa≡ N/m 2= kg/(m·s 2)= 1 Pa
pièze ( mtsunit)pz1000 kg/m·s 2= 10 3 Pa= 1 kPa
poundper square footpsf≡ 1 lbf/ft 247.880 26 Pa
pound per square inchpsi≡ 1 lbf/in 26.894 757×10 3 Pa
poundalper square footpdl/sq ft≡ 1 pdl/sq ft1.488 164 Pa
short tonper square foot ≡ 1 short ton × ɡ0/ 1 sq ft9.576 0518×10 4 Pa
torrtorr≡ ​ 101 325760Pa133.3224 Pa