TM 5-2420-230-24-2
Weight and Measures - Conversion Factors
Section V - Engine Component Specifications - Group 18
Page V-38
B Series
Weight and Measures - Conversion Factors
QUANTITY
U.S. CUSTOMARY
METRIC
FROM U.S.
FROM METRIC
CUSTOMARY
TO U.S.
TO METRIC
CUSTOMARY
MULTIPLY BY
MULTIPLY BY
Unit Name
Abbr.
Unit Name
Abbr.
in2
mm2
Area
sq. inch
sq. millimeters
645.16
0.001550
cm2
sq. centimeters
6.452
0.155
ft2
m2
sq. meter
0.0929
10.764
sq. foot
Fuel
pounds per
lb/hp-hr
grams per
g/kw-hr
608.277
0.001645
Consumption
kilowatt hour
hour
Fuel
miles per
mpg
kilometers per
km/l
0.4251
2.352
Performance
gallon
liter
gallons per
gpm
liters per
l/km
2.3527
0.4251
mile
kilometer
Force
pounds force
lbf
Newton
N
4.4482
0.224809
Length
inch
in
millimeters
mm
25.40
0.039370
foot
ft
millimeters
mm
304.801
0.00328
Power
hp
kilowatt
kw
0.746
1.341
Pressure
pounds force
psi
kilopascal
kPa
6.8948
0.145037
per sq. in
inches of
in Hg
kilopascal
kPa
3.3769
0.29613
mercury
inches of
in H2O
kilopascal
kPa
0.2488
4.019299
water
inches of
in Hg
millimeters
mm Hg
25.40
0.039370
mercury
of mercury
inches of
in H2O
millimeters
mm H2O
25.40
0.039370
water
of water
bars
bars
kilopascals
kPa
100.001
0.00999
bars
bars
millimeters of
mm Hg
750.06
0.001333
mercury
Temperature
fahrenheit
F
centigrade
C
(F-32) 1.8
(1.8 x C) +32
pound force
ft lb
Newton-meter
Nm
1.35582
0.737562
per foot
pound force
in lb
Newton-meter
Nm
0.113
8.850756
per inch
Velocity
miles/hour
mph
kilometers/hour
kph
1.6093
0.6214
Volume:
gallon (U.S.)
gal.
liter
l
3.7853
0.264179
liquid
gallon (Imp*)
gal.
liter
l
4.546
0.219976
displacement
in3
cubic inch
liter
l
0.01639
61.02545
in3
cm3
cubic inch
cubic
16.387
0.06102
centimeter
Weight (mass)
pounds (avoir.)
lb
kilograms
kg
0.4536
2.204623
Work
British Thermal
BTU
joules
j
1054.5
0.000948
Unit
British Thermal
BTU
kilowatt-hour
kw-hr
0.000293
3414
Unit
hp-hr
kilowatt-hour
kw-hr
0.746
1.341
hours
L-512
