Page 608 - Handbook of Electrical Engineering

CONVERSION FACTORS FOR THE SI SYSTEM OF UNITS 601

I.4.6 FORCE

Convert to Multiply by
dyne N 10 −8
kgf N 9.80665
lbf N 4.44822
ozf N 0.278014
poundal N 0.138255
tonf (UK) kN 9.96402

I.4.7 Torque

Convert to Multiply by
dyne-cm N-m 10 −7
kmf-m N-m 9.80665
lbf-ft N-m 1.35582
lbf-in N-m 0.112985

I.4.8 Power

Convert to Multiply by

ch (metric HP) W 735.499
ft-lbf/s W 1.35582
hp or HP W 745.700
hp or HP ft-lbf/s 550.0
hp or HP kgf-m/s 76.04
hp or HP W 745.70
kgf-m/s W 9.80665
kW ft-lbf/s 737.6
kW hp 1.3410

I.4.9 Energy and Work

Convert to Multiply by
BTU or btu kJ 1.05506
btu international cal 251.996
◦
btu 15 C cal 252.074
btu thermochem cal 252.164
btu ft-lbf 778.6(778.17)
btu kcal 0.252
btu kgf-m 107.6
btu W-s 1055.0
(continued overleaf )