1 angstrom ( ) = m = cm

1 fermi = 1 femtometer (fm) = m = cm

1 micron (µ) = 1 µm = m = cm =

1 light-year = 5.88 mi = 9.461 km

1 kPa = 0.14504 psi

1 bar = 14.5 psi = 100 kPa

1 kg/ = 14.22 psi

1 in. = 0.0361 psi

1 cmHg = 0.1934 psi

1 psi = 6.8947 kPa

1 psi = 0.06894 BAR

1 psi = 0.07031 kg/

lbs water 0.119

gal (Brit) 1.2

gal 128

cubic ft 7.48

cubic in 0.00433

gal 3.785

liter 0.264

cubic meters 264.2

cubic meters 1000

liter 1000

cubic cm 0.0338

fluid oz 29.57

= gallons

= gallons (US)

= fluid oz

= gallons

= gallons

= liters

= gallons

= gallons

= litters

= cubic cm

= fluid oz

= cubic cm

60 mph = 88 fps = 26.82 m/s

1 mph = 0.4470 m/s = 1.609 km/h = 1.47 fps

 = (1.8 ) + 32

= 0.555 ( - 32)

= + 273.2

1 newton (N) = dynes = 0.2248 lb

1 lb = 4.448 N

Weight = mass acceleration due to gravity

An object of weight 1 lb has mass 453.6 g = 0.4536 kg

An object of mass 1 kg has weight 9.807 N = 2.205 lbs

1 metric ton = 1000 kg = g

1 watt (W) = 1 J/s = 0.738 ft lbs/s

1 horsepower = 0.746 kilowatt (kw)

                      = 550 ft lbs/s

                      = 3.30 ft lb/min

1 Btu/hr = 2.93 kW

 = flow coefficient factor = flow rate ( US gpm) across a restriction

          (e.g. valves,fittings,etc.) at a 1 poig pressure drop

Q    = flow rate (US) gpm

= pressure drop (psig) across restriction

        = inlet pressure - outlet pressure

= Q/