Conversion tables of old pressure measurements units

Conversion of Pascal table for different pressure measurements units, included old and non metric pressure measurements units ( the comma is the decimal delimiter)

 

Unit name Symbol Definition Value in Pa
Atmosphere (standard) atm   ≡ 101 325 Pa
Atmosphere (technical) at ≡ 1 kgf/cm2 = 9,80665 × 104 Pa
Bar bar   ≡ 105 Pa
Barye (CGS unit) ba ≡ 1 dyn/cm2 = 0,1 Pa
Mercury centimeter cmHg ≡ 13595,1 kg/m3 × 1 cm × g ≈ 1,33322 × 103 Pa
Water centimeter (4 °C) cmH2O ≈ 999,972 kg/m3 × 1 cm × g ≈ 98,0638 Pa
Mercury foot (conventionnal) ftHg ≡ 13595,1 kg/m3 × 1 ft × g ≈ 40,63666 × 103 Pa
Water foot  (39.2 °F) ftH2O ≈ 999,972 kg/m3 × 1 ft × g ≈ 2,98898 × 103 Pa
Mercury inch (conventionnal) inHg ≡ 13595,1 kg/m3 × 1 in × g ≈ 3,386389 × 103 Pa
Water inch (39.2 °F) inH2O ≈ 999,972 kg/m3 × 1 in × g ≈ 249,082 Pa
kilogramme- strength by square millimeter  kgf/mm2 ≡ 1 kgf/mm2 = 9,806 65 × 106 Pa
kip by square inch  ksi ≡ 1 kipf/sq in ≈ 6,894757 × 106 Pa
Mercury micrometer μmHg ≡ 13595,1 kg/m3 × 1 μm × g

≈ 0.001 torr

≈ 0,1333224 Pa
Mercury millimeter  mmHg ≡ 13595,1 kg/m3 × 1 mm × g ≈ 1 torr ≈ 133,3224 Pa
Water millimeter (3.98 °C) mmH2O ≈ 999,972 kg/m3 × 1 mm × g

= 0,999972 kgf/m2

= 9,806 38 Pa
pascal (SI unit) Pa ≡ N/m2 = kg/(m·s2) = 1 Pa
pièze (mts unit) pz ≡ 1 000 kg/m·s2 = 1 × 103 Pa = 1 kPa
Pound by square foot  psf ≡ 1 lbf/ft2 ≈ 47,88025 Pa
Pound by square inch Psi ≡ 1 lbf/in2 ≈ 6,894757 × 103 Pa
Poundal by square foot  Pdl/sq ft ≡ 1 pdl/sq ft ≈ 1,488164 Pa
Short ton by square foot   ≡ 1 sh tn × g / 1 sq ft ≈ 95,760518 × 103 Pa
Torr Torr ≡ 1/760 d’une atmosphère standard

≈ 1 mm de mercure

≈ 133,3224 Pa