TM 5-3810-307-24-1-2
Weight and Measures - Conversion Factors
FROM U.S.
FROM METRIC
QUANTITY
U.S. CUSTOMARY
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. foot
sq. meter
0.0929
10.764
g/kw-hr
608.277
0.001 645
lb/hp-hr
Fuel
pounds per
grams per
Consumption
kilowatt hour
hour
mpg
km/I
0.4251
2.352
Fuel
miles per
kilometers per
Performance
gallon
liter
I/km
2.3527
0.4251
gpm
liters per
gallons per
kilometer
mile
Force
pounds force
Ibf
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
psi
kilopascal
kPa
6.8948
0.145037
Pressure
pounds force per
sq. in
inches of mercury
in Hg
kilopascal
kPa
3.3769
0.29613
inches of water
in H20
kilopascal
kPa
0.2488
4.019299
mm Hg
25.40
0.039370
inches of mercury
in Hg
millimeters of
mercury
inches of water
in H20
mm H20
25.40
0.039370
millimeters of
water
bars
bars
kilopascals
kPa
100.001
0.00999
mm Hg
750.06
0.001333
bars
bars
millimeters of
mercury
F
C
(F-32) 1.8
(1.8 x C) +32
Temperature
Fahrenheit
Centigrade
Nm
ft lb
Newton-meter
1.35582
0.737562
pound force
per foot
Nm
in lb
Newton-meter
0.113
8.850756
pound force
per inch
Velocity
miles/hour
mph
kilometers/hour
kph
1.6093
0.6214
gallon (U.S.)
gal.
liter
I
3.7853
0.264179
Volume:
liquid
gallon (lmp*)
gal.
liter
I
4.546
0.219976
displacement
in3
cubic inch
liter
I
0.01639
61.02545
cm3
in3
16.387
0.06102
cubic inch
cubic
centimeter
Weight (mass)
pounds (avoir.)
lb
kilograms
kg
0.4536
2.204623
BTU
joules
j
1054.5
0.000948
Work
British Thermal
Unit
BTU
kilowatt-hour
kw-hr
0.000293
3414
British Thermal
Unit
hp-hr
kilowatt-hour
kw-hr
0.746
1.341
hours
