Length..

• 1 in = 2.540 0 cm
• 1 ft = 0.304 80 m
• 1 yd = 0.914 40 m
• 1 mi = 1.609 3 km

Mass..

• 1 oz = 28.350 g
• 1 lb = 0.453 59 kg
• 1 cwt = 50.802 kg
• 1 ton =1.0161 tonne

Force...

• 1 lbf = 4.448 2 N
• 1 kgf = 9.8065 N

Pressure...

• 1 N m^-2 = 1 Pa
• 1 bar = 10⁵ Pa
• 1 lbs.inch^-2 =6.89475 KPa

Energy...

• 1 ft lbf = 1.356 J
• 1 kW h = 3.600 0 MJ
• 1 therm = 105.51 MJ
• 1 kcalorie (Calorie) = 4.1868 KJ
• 1 BTU = 1.0551 KJ

Moment Of Force (Torque)

• 1 lbf ft =1.355 8 N m

Power..

• 1 hp =0.745 79 kW
• ft.lbf /s = 1.356 W

Volume..

• 1 in³ = 16.387 cm³
• 1 ft³ = 0.028 317 m³
• 1 yd³ = 0.746 56 m³
• 1 pint = 0.568 26 litre(dm³)
• 1 UK gallon = 4.546 09 litre (dm³)
• 1 US gallon = 3.78541 litre (dm³)
  

Velocity

• 1 ft/s = 0.304 80 m/s
• 1 mi/hr = 1.609 3 km/hr

Dynamic Viscosity

• 1 lbsf s / ft² = 47.8803 Pa s
• 1 centipoise (cP) = 10^-2 Poise (P) = 10^-3 Pa s