Utilities Distance in mm ft m mi km nmi km Mass kg lb LTn Tn Br Tn Temperature ºC ºF Pressure bar psi inHg psi Kg2/cm psi Kg2/cm bar Kg2/cm inHg Volume ft3 m3 l ft3 l US Gal l UK Gal US Gal UK Gal Area m2 ft2