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Saturday, December 25, 2010

Conversion Factors

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To convert from                       To                                  Multiply by
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Btus                                          Calorie-grams               251.996
                                                  Ergs                              1.054 x 10^10
                                                  Foot-pounds                 777.649
                                                  Hp-hours                       0.000393
                                                  Joules                           1054.35
                                                  Kilowatthours              0.000293
                                                  Wattseconds                 1054.35


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Ergs                                          Dyne-centimeters          1.0
                                                 Electronvolts                 6.242 x 10^11
                                                 Foot-pounds                  7.376 x 10^-8
                                                 Joules                             1 x 10^-7
                                                 Kilowatthours                2.777 x 10^-14


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Electronvolts                          Ergs                                1.60209 x 10^-12

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Foot-pounds                           Dynes-centimeters           1.3558 x 10^7
                                                Ergs                                 1.3558 x 10^7
                                                Horsepower-hours          5.05 x 10^-7
                                                Joules                              1.3558
                                                Newton-meters                1.3558

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Joules                                                 Btu                                  0.000948
                                                 Ergs                                1 x 10^7
                                                 Foot-pounds                   0.7376
                                                 Horsepower-hours         3.725 x 10^-7
                                                 Kilowatthours                 2.777 x 10^-7
                                                 Wattseconds                    1.0

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Centimeters                             Angstrom units             1 x 10^8
                                                 Feet                               0.0328
                                                 Inches                            0.3937
                                                                Meters                         0.01
                                                 Miles (statute)              6.214 x 10^-6
                                                 Millimeters                   10

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Feet                                        Centimeters                     30.48
                                              Meters                              0.3048

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Inches                                    Angstrom units                2.54 x 10^8
                                              Centimeters                      2.54
                                              Feet                                   0.0833
                                             Meters                                0.0254

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Meters                                               Angstrom units                 1 x 10^10
                                             Centimeters                       100
                                             Feet                                    3.2808
                                             Inches                                 39.370
                                             Miles (statute)                    0.000621


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Miles (statute)                    Feet                                     5280
                                            Kilometers                          1.609
                                                        Meters                                  1609.344

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Circular mils                           Square centimeters       5.067 x 10^-6
                                                 Square inches               7.854 x 10^-7

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Cubic inches                           Cubic centimeters        16.387
                                                Gallons (U.S. liquid)      0.00433

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Cubic meters                          Cubic feet                      35.315

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Gallons (U.S. liquid)             Cubic inches                   231
                                                Liters                               3.785
                                                Ounces                            128
                                                Pints                                 8


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Liters                                      Cubic centimeters           1000.028
                                                Cubic inches                   61.025
                                                Gallons (U.S. liquid)      0.2642
                                                Ounces (U.S. liquid)       33.815
                                                Quarts (U.S. liquid)        1.0567


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Quarts (U.S. liquid)               Cubic centimeters            946.353
                                                Cubic inches                    57.75
                                                Gallons (U.S. liquid)      0.25
                                                Liters                               0.9463
                                                Pints (U.S. liquid)           2
                                                Ounces (U.S. liquid)      32


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Days                                        Hours                             24
                                                Minutes                         1440
                                                              Seconds                         86,400

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Hours                                                    Seconds                            3600

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Years                                      Days                                365
                                               Hours                              8760

                                               Minutes                           525,600
                                                          Seconds                           3.1536 x 10^7

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Dynes                                     Gallons (U.S. liquid)      264.172
                                                           Newtons                          0.00001
                                                          Pounds                             2.248 x 10^-6

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Foot-candles                        Lumens/square foot        1.0
                                              Lumens/square meter     10.764

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Lumens                                 Candle power (spher.)       0.0796

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Lumens/square centimeter     Lamberts                          1.0 

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Lumens/square foot               Foot-candles                      1.0

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Gauss                                      Maxwells/square centimeter    1.0
                                                 Lines/square centimeter           1.0
                                                 Lines/square inch                      6.4516

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Lines/square centimeter          Gauss                                         1.0

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Lines/square inch                    Gauss                                         0.1550 
                                                Webers/square inch                    1 x 10^-8 

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Lines                                        Maxwells                                    1.0

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Maxwells                                Lines                                            1.0
                                               Webers                                          1 x 10^-8

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Webers                                    Lines                                             1 x 10^8
                                                Maxwells                                       1 x 10^8

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Gilberts                                    Ampere-turns                                 0.7958

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Oersteds                                   Ampere-turns/inch                         2.0212
                                                 Ampere-turns/meter                        79.577
                                                 Gilberts/centimeter                          1.0

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Grams                                      Dynes                                              980.665
                                                 Ounces                                            0.0353
                                                 Pounds                                            0.0022

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Kilograms                                Dynes                                             980.665
                                                Ounces                                            35.2 
                                                Pounds                                             2.2

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Slugs                                             Kilograms                                    14.5939
                                                Pounds                                           32.1740

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Horsepower                            Btus/hour                                        2547.16
                                                Ergs/second                                     7.46 x 10^9
                                                Foot-pounds/second                       550.221
                                                Joules/second                                  746
                                                Watts                                                746

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Watts                                     Btus/hour                                          3.4144
                                              Ergs/second                                       1 x 10^7
                                              Horsepower                                       0.00134
                                              Joules/second                                    1.0

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Miles/hour                           Kilometers/hour                                1.609344

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Newton-meters                    Dyne-centimeters                              1 x 10^7
                                              Kilogram-meters                               0.10197

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Radians                                Degrees                                               57.2958

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