Temperature

celsius, rankine, kelvin, centigrade, fahrenheit,

• 1 ^oC = 1.8 ^oF
• 1 ^oF = 0.555 ^oC
• 0 ^oC corresponds to 32 ^oF, 273.16 K and 491.69 R
• T(^oR) = (9/5)T(K)
• T(^oF) = [T(^oC)](9/5) + 32
• T(^oF) = [T(K) - 273.15](9/5) + 32
• T(^oC) = 5/9[T(^oF) - 32]

Pressure

atmosphere, centimeters of mercury, foot of water, bar, barye, centimeter of water, dyne/centimeter², inch of mercury, inch of water, kgf/centimeter², kgf/meter², lbf/foot², lbf/inch² (psi), millibar, millimeter of mercury, pascal, torr, newton/meter²

• 1 atm = 101.325 kN/m² = 101.325 kPa = 14.7 psia = 0 psig = 29.92 in Hg = 760 torr = 33.95 Ft.H₂O = 407.2 In.W.G (Water Gauge) = 2116.8 Lbs./Sq.Ft.
• 1 Pa = 10^-6 N/mm² = 10^-5 bar = 0.1020 kp/m² = 1.02x10^-4 m H₂O = 9.869x10^-6 atm = 1.45x10^-4 psi (lbf/in²)
• 1 N/mm² = 10⁶ Pa = 10 bar = 1.020x10⁵ kp/m² = 102.0 m H₂O = 9.869 atm = 145.0 psi (lbf/in²)
• 1 bar = 10⁵ Pa (N/m²) = 0.1 N/mm² = 10,197 kp/m² = 10.20 m H₂O = 0.9869 atm = 14.50 psi (lb_f/in²) = 10⁶ dyn/cm² = 750 mmHg
• 1 kp/m² = 9.81 Pa (N/m²) = 9.807x10^-6 N/mm² = 10^-3 m H₂O = 1 mm H₂O = 0.9681x10^-4 atm = 1.422x10^-3 psi (lb/in²) = 0.0394 in H₂O = 0.0736 mm mercury

Length

feet, meters, centimeters, kilometers, miles, furlongs, yards, micrometers, inches,angstrom, cubit, fathom, foot, hand, league, light year, micron, mil, nautical mile, rod,

• 1 m (meter) = 3.2808 ft = 39.37 in = 1.0936 yd = 6.214x10^-4 mile
• 1 km = 0.6214 mile = 3281 ft = 1094 yds
• 1 in (inch) = 25.4 mm = 2.54 cm = 0.0254 m = 0.08333 ft = 0.02778 yd = 1.578x10^-5 mile
• 1 ft (foot) = 0.3048 m = 12 in = 0.3333 yd = 1.894x10^-4 mile = 30.48 cm = 304.8 mm
• 1 mm = 10^-3 m
• 1 cm = 10^-2 m = 0.3937 in = 0.0328 ft
• 1 mm = 0.03937 in
• 1 Å (Ångström) = 10^-10 m
• 1 mile = 1.6093 km = 1,609.3 m = 63,346 in = 5,280 ft = 1,760 yd
• 1 yd (yard) = 0.9144 m = 36 in = 3 ft = 5.682x10^-4 mile

Torque, Moment

foot-pound torque, newton-meter

• 1 ft lb = 1.356 Nm