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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