SECTION 2
2-4
1-/ 2-Cylinder
UNIT CONVERSIONS
Unit Prefixes
Prefix Symbol Power
mega M x 1,000,000
kilo k x 1,000
centi c x 0.01
milli m x 0.001
micro µ x 0.000001
Units of Length
mile x 1.6090 = km
ft x 0.3050 = m
in x 2.5400 = cm
in x 25.4000 = mm
km x 0.6210 = mile
mx3.2810 = ft
cm x 0.3940 = in
mm x 0.0394 = in
Units of Volume
gal (U.S.) x 3.78540 = L
qt (U.S.) x 0.94635 = L
cu-in x 0.01 639 = L
cu-in x 16.38700 = mL
fl oz (U.S.) x 0.02957 = L
fl oz (U.S.) x 29.57000 = mL
cm
3
x 1.00000 = mL
cm
3
x 0.03382 = fl oz (U.S.)
Units of Mass
lb x 0.45360 = kg
oz x 28.35000 = g
kg x 2.20500 = lb
gx0.03527 = oz
Units of Force
lbf x 4.4480 = N
lbf x 0.4536 = kgf
Nx0.2248 = lbf
Nx0.1020 = kgf
kgf x 2.2050 = lbf
kgf x 9.8070 = N
Units of Torque
ft-lb x 1.3558 = N-m
ft-lb x 0.1383 = kg-m
in-Ib x 0.1130 = N-m
in-lb x 0.0115 = kg-m
kg-m x 7.2330 = ft-lb
kg-m x 86.8000 = in-lb
kg-m x 9.8070 = N-m
N-m x 0.7376 = ft-lb
N-m x 8.8510 = in-lb
N-m x 0.1020 = kg-m
Units of Pressure
psi x 0.0689 = bar
psi x 6.8950 = kPa
psi x 0.0703 = kg/cm
2
bar x 14.5030 = psi
bar x 100.0000 = kPa
bar x 29.5300 = in Hg (60°F)
kPa x 0.1450 = psi
kPa x 0.0100 = bar
kPa x 0.0102 = kg/cm
2
kg/cm
2
x 14.2200 = psi
kg/cm
2
x 0.9807 = bar
kg/cm
2
x 98.0700 = kPa
in Hg (60°F) x 0.0333 = bar
in Hg (60°F) x 3.3770 = kPa
in Hg (60°F) x 0.0344 = kg/cm
2
Units of Power
HP x 1.01400 = PS
HP x 745.70000 = W
HP x 550.00000 = ft-lbf/s
PS x 0.98630 = HP
PS x 735.50000 = W
PS x 542.50000 = ft-lbf/s
Wx0.00134 = HP
Wx0.00136 = PS
Wx0.73760 = ft-lbf/s
kW x 1.34100 = HP
kW x 1.36000 = PS
kW x 737.56000 = ft-lbf/s
ft-lbf/s x 0.00181 = HP
ft-Ibf/s x 0.00184 = PS
ft-lbf/s x 1.35600 = W
Units of Temperature
°F = (1.8 • °C) + 32
°C = 0.556 • (°F - 32)