Metric conversion chart.

   To Convert ...            To ...          Multiply by ...
    U.S. System           Metric System

Length

mil                    millimeter            0.0254
inch                   millimeter            25.4
inch                   centimeter            2.54
foot                   centimeter            30.48
foot                   meter                 0.3048
yard                   meter                 0.9144

Area

[inch.sup.2]           [millimeter.sup.2]    645.16
[inch.sup.2]           [centimeter.sup.2]    6.4516
[foot.sup.2]           [centimeter.sup.2]    929.03
[foot.sup.2]           [meter.sup.2]         0.0929
[yard.sup.2]           [meter.sup.2]         0.8361

Volume

[inch.sup.3]           [centimeter.sup.3]    16.3871
fluid ounce            [centimeter.sup.3]    29.5735
quart (liquid)         [decimeter.sup.3]
                         (liter)             0.9464
gallon (U.S.)          [decimeter.sup.3]
                         (liter)             3.7854
gallon (U.S.)          [meter.sup.3]         0.0038
[foot.sup.3]           [decimeter.sup.3]     28.3169
[foot.sup.3]           [meter.sup.3]         0.0283
[yard.sup.3]           [meter.sup.3]         0.7646
[in.sup.3]/lb          [m.sup.3]/kg          0.000036
[ft.sup.3]/lb          [m.sup.3]/kg          0.0624

Mass

ounce (avdp.)          gram                  28.3495
pound                  gram                  453.5924
pound                  kilogram              0.4536
pound                  metric ton            0.00045
U.S. ton (short)       metric ton            0.9072

Force

lbf                    N                     4.448

Density

lb/[in.sup.3]          kg/[m.sup.3]          27,680
lb/[ft.sup.3]          g/[cm.sup.3]          0.0160
lb/[ft.sup.3]          kg/[m.sup.3]          16.0185
lb/[in.sup.3]          g/[cm.sup.3]          27.68

Temperature

in/(in * [degrees]F)   m/(m  * [degrees]C)   1.80
[degrees]F             [degrees]C            ([degrees]F -
                                               32)/(1.8)
[degrees]F             K                     ([degrees]F +
                                               459.67)/(1.8)
Pressure

psi                    kPa                   6.8948
psi                    MPa                   0.00689
psi                    GPa                   0.00000689
psi                    bar                   0.0689

Energy and Power

ft * lbf               J                     1.3558
in * lbf               J                     0.113
ft * lbf/in            J/m                   53.4
ft * lbf/in            J/cm                  0.534
ft * lbf/[in.sup.2]    kJ/[m.sup.2]          2.103
kW                     metric horsepower     1.3596
U.S. horsepower        kW                    0.7457
[Btu.sup.a]            J                     1055.10
[Btu.sup.a]            W * h                 0.2931
[Btu.sup.a] * in/
  (h * [ft.sup.2]
  * [degrees]F)        W/(m * K)             0.1442
[Btu.sup.a]/lb         kJ/kg                 2.326
[Btu.sup.a]/(lb *
  [degrees]F)          J/(kg * [degrees]C    4187
V/mil                  MV/m                  0.0394

Output

lb/min                 g/s                   7.560
lb/h                   kg/h                  0.4536

Velocity

in/min                 cm/s                  0.0423
ft/s                   m/s                   0.3048

Viscosity

poise                  Pa * s                0.1

  To Convert ...             To ...            Multiply by ...
   Metric System          U.S. System

Length

millimeter            mil                    39.37
millimeter            inch                   0.0394
centimeter            inch                   0.3937
centimeter            foot                   0.0328
meter                 foot                   3.2808
meter                 yard                   1.0936

Area

[millimeter.sup.2]    [inch.sup.2]           0.0016
[centimeter.sup.2]    [inch.sup.2]           0.155
[centimeter.sup.2]    [foot.sup.2]           0.0011
[meter.sup.2]         [foot.sup.2]           10.7639
[meter.sup.2]         [yard.sup.2]           1.1960

Volume

[centimeter.sup.3]    [inch.sup.3]           0.061
[centimeter.sup.3]    fluid ounce            0.0338
[decimeter.sup.3]
  (liter)             quart (liquid)         1.0567
[decimeter.sup.3]
  (liter)             gallon (U.S.)          0.2642
[meter.sup.3]         gallon (U.S.)          264.17
[decimeter.sup.3]     [foot.sup.3]           0.0353
[meter.sup.3]         [foot.sup.3]           35.3147
[meter.sup.3]         [yard.sup.3]           1.3079
[m.sup.3]/kg          [in.sup.3]/lb          27,680
[m.sup.3]/kg          [ft.sup.3]/lb          16.018

Mass

gram                  ounce (avdp.)          0.03527
gram                  pound                  0.0022
kilogram              pound                  2.2046
metric ton            pound                  2204.6
metric ton            U.S. ton (short)       1.1023

Force

N                     lbf                    0.225

kg/[m.sup.3]          lb/[in.sup.3]          0.000036
g/[cm.sup.3]          lb/[ft.sup.3]          62.43
kg/[m.sup.3]          lb/[ft.sup.3]          0.0624
g/[cm.sup.3]          lb/[in.sup.3]          0.03613

Temperature

m/(m  * [degrees]C)   in/(in * [degrees]F)   0.556
[degrees]C            [degrees]F             1.8([degrees]C + 32
K                     [degrees]F             1.8K - 459.67

Pressure

kPa                   psi                    0.145
MPa                   psi                    145
GPa                   psi                    145,038
bar                   psi                    14.51

Energy and Power

J                     ft * lbf               0.7376
J                     in * lbf               8.850
J/m                   ft * lbf/in            0.0187
J/cm                  ft * lbf/in            1.87
kJ/[m.sup.2]          ft * lbf/[in.sup.2]    0.4755
metric horsepower     kW                     0.7355
kW                    U.S. horsepower        1.3419
J                     [Btu.sup.a]            0.00095
W * h                 [Btu.sup.a]            3.412
W/(m * K)             [Btu.sup.a] * in/
                        (h * [ft.sup.2]
                        * [degrees]F)        6.933
kJ/kg                 [Btu.sup.a]/lb         0.4299
J/(kg * [degrees]C    [Btu.sup.a]/(lb *      0.000239
                        [degrees]F)
MV/m                  V/mil                  25.4

Output

g/s                   lb/min                 0.1323
kg/h                  lb/h                   2.2046

Velocity

cm/s                  in/min                 23.6220
m/s                   ft/s                   3.2808

Viscosity

Pa * s                poise                  10

(a) International table

Standard Metric Symbols

A     ampere
bar   bar
cd    candela
C     celsius (a)
g     gram
h     hour
Hz    hertz
J     joule
K     kelvin
kg    kilogram
L     liter
m     meter
N     newton
Pa.   pascal
S     siemens
s     second
t     metric ton
V     volt
W     watt

       Metric Prefixes (b)

Numerical Value   Term    Symbol

 10               deca      da
 [10.sup.2]       hecto     h
 [10.sup.3]       kilo      k
 [10.sup.6]       mega      M
 [10.sup.9]       giga      G
 [10.sup.12]      tera      T
 [10.sup.-1]      deci      d
 [10.sup.-2]      centi     c
 [10.sup.-3]      milli     m
 [10.sup.-6]      micro     p
 [10.sup.-9]      nano      n
 [10.sup.-12]     pico      p

(a) Formerly called Centigrade

(b) These prefixes may be used with all units