Useful conversion factors & on line calculators

POWER

English HP X 0.7457 = KW

KW X 1.341 = English HP

Metric HP (PS) X 0.7355 = KW

KW X 1.3596 = Metric HP (PS)

Torque

http://www.torqueleader.co.uk/conversion.htm

kg/m X 7.23 = ft/lb

ft/lb X 0.13831 = kg/m

kg/m X 9.807 = Nm

Nm X 0.10196 = kg/m

Power to weight!

kg/hp X 474.28 = hp/ton

Speed

KM/h X 0.62137 = MPH

MPH X 1.6093 = KM/h

Spring rates

kg/mm X 55 = pounds/inch

pounds/in / 55 = kg/mm