Conversion Factor Table
[Pages:1]Conversion Factor Table
Copyright ? by Jon Wittwer
Multiple
by
To Get
hp
inch
2.54
cm
hp
This can also be written as: 1 inch = 2.54 cm
hp
A acre ampere?hr (A?h)
?ngstr?m (?) atm (atmosphere)
43,560 3,600 1x10-10 1.01325
ft2 coulomb (C)
m bar
hp hp hp?hr
hp?hr
atm, std
76.0
cm of Hg
hp?hr
atm, std
760
mm of Hg at 0?C
in
atm, std
33.90
ft of water
in of Hg
atm, std
29.92
in of Hg at 30?F
in of Hg
atm, std atm, std
14.696 101.325
lbf/in2 abs (psia) kPa
in of Hg in of water
atm, std
atm, std atm, std
1.013x105
1.03323 14.696
Pa kgf / cm2 psia
in of water in of water
J J (joule)
B bar
0.9869
atm, std
J
bar
1x105
Pa
J
Btu
778.169
ft?lbf
J
Btu
1055.056
J
J
Btu
Btu
Btu Btu / hr Btu / hr
Btu / hr Btu / hr Btu / lbm
Btu / lbm Btu / lbm?R Btu / lbm??F Btu / lbmol?R
C cal (g-calorie)
cal cal (IT calorie) Calorie (Cal) cal / sec cm (centimeter) cm cP (centipoise)
cSt (centistokes) D degree
dyne
5.40395 2.928x10-4 1x10-5 1.055056 0.216 3.929x10-4 0.2931 2.326*
25,037 4.1868 4.1868 4.1868 3.968x10-3 1.560x10-6 4.1868 4.1868 4.1868 0.03281 0.3937 0.001 1x10-6 /180 10
psia?ft3
kWh
therm kJ / hr ft?lbf / sec
hp W kJ / kg ft2 / s2 kJ / kg?K kJ / kg??C kJ / kmol?K
Btu
hp?hr J kJ W (watt) ft in Pa?sec m2 / sec
J / s K kg (kilogram)
kg
kg kg / m3 kgf kip kip
kJ kJ kJ kJ
kJ / kg kJ / kg kJ / kg?K kJ / kg??C kJ / kg??C kJ / kg??C kJ / kg??C km km km/hr
radian
km/hr
?N (micronewton) km/hr
E eV (electronvolt) 1.602x10-19
J
kPa (kilopascal)
erg F ft (feet)
ft ft2 ft2 ft2
1x10-7
J
0.3048*
m
30.48
cm
2.2957x10-5
acre
144
in2
0.09290304*
m2
kPa kW kW kW kW kWh (kW-hour) kWh
ft3
7.481
gal (U.S.)
kWh
ft3
0.02832
m3
L L (liter)
ft3
28.317
L
L
ft3 / lbm
0.062428
m3 / kg
L
ft?lbf
1.285x10-3
Btu
L
ft?lbf
1.35582
J
L / s
ft?lbf
3.766x10-7
kWh
L / s
ft?lbf
1.35582
N?m
lbf (pound force)
ft?lbf
0.324
calorie (g-cal)
lbf
ft?lbf / sec ft / s2
G U.S. gallon (gal) gal
1.818x10-3 0.3048* 0.13368 3.7854
hp m / s2 ft3 L
lbf lbf / in2 (psi) lbf / in2 lbf / in2
gal
3.7854x10-3
m3
lbf / in2
gal gal (U.K.) gal (U.K.) gal / min (gpm) gamma (,) gauss gram (g) g / cm3
231 1.201
277.4
0.002228 1x10-9 1x10-4 2.205x10-3
1
in3 gal (U.S.) in3 ft3 / sec tesla (T)
T lbm
1 kg / L
lbm lbm lbm / in3 lbm / ft3 lbm / ft3 M m (meter) m m m2
g / cm3
1000
kg / m3
m2
g / cm3
62.428
lbm / ft3
m3
g / cm3
1.940
slug / ft3
m3
g / cm3
0.036127
lbm / in3
m3
H hectare
1x104
m2
m3
hectare hp (horsepower) hp
2.47104 42.41 0.7068
acres Btu / min Btu / sec
m3 / kg m / s
2544.5 745.70 0.74570 33,000 550 2544 1.98x106 2.68x106 2.54* 0.0334 13.60 3.387 0.0736
0.0361 0.002458 9.4782x10-4 6.2415x1018 0.73756 1 1x107 1 2.2046226 0.068522 1x10-3
0.062428 9.80665 1000 4448
1 1000 0.94782 737.56
1000 0.42992 0.23885 1 1 0.23885 0.23885 3280.8 0.6214 0.6214 0.2778 0.9113 9.8693x10-3
0.14504 3412.14 0.9478 737.56 1.341 3412.14 1.341 3600
0.03531
61.02 0.2642
0.001
2.119 15.85
32.174 4.44822 32.17
0.06805
2.307
2.036
6894.757 0.45359237* 0.031081
1728
0.016018
16.018 3.28083 1.0926 39.370
1550
10.764 1x106
35.315
264.17
1000
16.02 196.8
Btu / hr W (watt) kW ft?lbf / min ft?lbf / sec Btu
ft?lbf
J cm atm in of water kPa in of Hg lbf / in2 (psi) atm
Btu
eV ft?lbf N?m
ergs W lbm (pound mass) slug
metric ton lbm / ft3 newton (N) lbf N 1 kPa?m3 N?m Btu ft?lbf m2 / s2 Btu / lbm Btu / lbm??R kJ / kg?K J / g??C Btu / lbm??F Btu / lbm?R ft mi mi / hr (mph) m/s ft/s
atm lbf / in2 (psi) Btu / hr Btu / sec lbf?ft / sec hp Btu hp?hr kJ ft3 in3 gal (U.S.) m3 ft3 / min (cfm) gal / min (gpm) lbm?ft / s2 N poundals
atm
ft water
in Hg
Pa kg slug lbm / ft3 g / cm3 kg / m3 ft yard in in2 ft2 cm3 (cc) ft3
gal (U.S.)
L ft3 / lbm ft / min
m / s
3.60
km / h
m / s
3.2808
ft / s
m / s
2.237
mi / h (mph)
m / s2
3.2808
ft / s2
metric ton
1000
kg
mil
0.001
in
mi (mile)
5280
ft
mi
1.6093
km
mi2 (square mile) 640
acres
mph (mile/hour) 1.6093
km / hr
mph
88.0
ft / min (fpm)
mph
1.467
ft / s
mph
0.4470
m / s
micron
1x10-6
m
mm of Hg
1.316x10-3
atm
mm of Hg
0.1333
kPa
mm of water
9.678x10-5
atm
N N (newton)
1
kg?m / s2
N
1x105
dyne
?N (microN)
0.1
dyne
N
0.22481
lbf
N?m
0.7376
ft?lbf
N?m
1
J
P Pa (pascal)
1
N / m2
Pa
1.4504x10-4
lbf / in2 (psia)
Pa
0.020886
lbf / ft2
Pa
9.869x10-6
atm
Pa?s
10
poise
psi (pounds per square inch) --- see lbf / in2
R radian
180/
degree
S short ton
2000
lbm
short ton
907.1847
kg
slug
32.174
lbm
slug
14.5939
kg
slug / ft3
0.5154
g / cm3
stokes
1x10-4
m2 / s
T therm
1x105
Btu
ton of refrigeration 200
Btu / min
W W (watt)
3.4121
Btu / hr
W
0.7376
ft?lbf / sec
W
1.341x10-3
hp
W
1
J / s
W / cm2
1x104
W / m2
W / cm3
1x106
W / m3
W / m2
0.3171
Btu / (h?ft2)
W / m3
0.09665
Btu / (h?ft3)
W / m??C
1
W / m?K
W / m??C
0.57782
Btu / (h?ft??F)
W / (m2??C)
1
W / (m2?K)
W / (m2??C)
0.17612
Btu / (h?ft2??F)
weber / m2
10,000
gauss
* The exact conversion between metric and English.
TEMPERATURE T(K) = T(?C) + 273.15 T(R) = T(?F) + 459.67 T(?F) = 1.8 T(?C) + 32
SOME IMPORTANT CONSTANTS
Atomic Mass Unit (u) = 1.66054x10-27 kg
Avogadro's number (NA) = 6.02213x1023 particles/mol
Boltzmann's constant (kB)= 1.38065x10-23 J / K
electron charge (e)
= -1.6022x10-19 C
electron mass (me)
= 9.10939x10-31 kg
proton mass (mp)
= 1.6726x10-27 kg
Gas Constant (R)
= 8314 J / kmol?K
Gravitational Constant (G)= 6.672x10-11 N?m2 / kg2
Gravity (mean)
= 9.8067 (9.81) m / s2
Planck's constant (h) = 6.6260x10-34 J?s
Speed of Light (c)
= 2.99792458x108 m/s (exact)
SI PREFIXES yocto (10-24), zepto (10-21), atto (10-18), femto (10-15), pico (10-12), nano (10-9), micro (10-6), milli (10-3), centi (10-2), deci (10-1), deka (101), hecto (102), kilo (103), mega (106), giga (109), tera (1012), peta (1015), exa (1018), zetta (1021), yotta (1024)
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