11/15/03

Hit Counter Hits

cover Desk Ref (2nd Edition; Shirt Pocket...

 Measure for Measure

Handyman In-Your-Pocket cover

  Pocket Partner cover

Units resemble sports officials: the only time you really pay attention to them is when something stupid happens.---Steve Mirsky in Scientific American, August 2000, p. 96.

Tip on using tables:                                                                             

 To convert the opposite direction use the reciprocal of "Multiply by" or just divide by.

Area, Distance, Capacitance, Conductance, Computer data, Electrical Current, Electrical Charge, Electrical Potential,  Electrical Resistance, Energy, Flux of light, Heat Transfer, Inductance, Intensity of light, Luminance, magnetomotive force, Mass, Power, Pressure, Resistivity, Sound Intensity, Specific Energy, Test instrument, Volume, Viscosity , Work

Abbreviations and symbols used in tables

Capacitance                                   Top of Page

 From                                   TO                                  Multiply By

farads abfarads 1 x 10-9
farads farads (Int) 1.00049
farads microfarads 1 x 106
farads statfarads 8.98758 x 1011
farads (Int) farads 0.9995
     

Computer Data                                   Top of Page

 From                                   TO                                  Multiply By

bits bytes 0.125
bits nibbles 0.25
bytes bits 8
bytes nibbles 2

 

Conductance                                   Top of Page

 From                                   TO                                  Multiply By

abmhos Megamhos 1000
abmhos mhos 1 x10-9
abmhos statmhos 8.98758 x1020
     

Electrical Charge                                   Top of Page

 From                                   TO                                  Multiply By

abcoulombs ampere hours 0.00278
abcoulombs coulombs 10
abcoulombs electronic charges 6.24196 x1019
abcoulombs Faradays (chem) 1.03638 x10-4
abcoulombs statcoulombs 2.99793 x1010
ampere-hours abcoulombs 360
ampere-hours coulombs 3600
ampere-hours faradays (Chem) 0.3731
     

Electrical Current                                   Top of Page

 From                                   TO                                  Multiply By

abamperes amperes 10
abamperes Faradays/sec (chem) 1.03638 x 10-4
amperes statamperes 2.99793 x1010
amperes abamperes 0.01
amperes amperes (Int) 1.00016
amperes coulombs/sec 1
amperes Faradays/sec (Chem) 1.03638 x 10-5
amperes statamperes 2.99793 x 109
amperes (Int) amperes 0.99984
amperes biot 10
biot amperes 0.10
     
     

Electrical Potential                                   Top of Page

 From                                   TO                                  Multiply By

abvolts microvolts 0.01
abvolts millivolts 1 x 10-5
abvolts volts 1 x 10-8

Electrical Resistance               Top of Page

 From                                   TO                                  Multiply By

abohms Megohms 1000
abohms microhms 0.001
abohms ohms 1 x10-9
     

Energy                                   Top of Page

 From                                   TO                                  Multiply By

BTU BTU (Int Steam Tab) 0.99935
BTU BTU (mean) 0.99856
BTU BTU @ 60oF 0.99969
BTU cal, gm 251.996
BTU cal, gm (Int Steam Tab) 251.831
BTU cal, gm (Int Steam Tab) 251.634
BTU cal, gm @ 20oC 252.122
BTU ergs 1.0543 x 1010
BTU foot-poundals 25020.1
BTU foot-pounds 777.649
BTU gram-cm 1.0751 x 107
BTU Hp-hours 0.00039
BTU joules 1054.35
BTU joules (Int) 1054.18
BTU kg-calories 0.2520
BTU kw-hours 0.00029287
BTU kw-hours (Int) 0.00029283
BTU liter-atm 10.4053
BTU Therm 0.00001
BTU watt-seconds 1054.35
BTU watt-second (Int) 1054.18
BTU (Int steam table) BTU 1.00065
BTU (mean) BTU 1.00144
BTU @ 60oF BTU 1.00031
Calories, gm BTU 0.003968
Calories, gm BTU (Int steam table) 0.003966
Calories, gm BTU (mean) 0.00396
Calories, gm BTU @ 60oF 0.00397
Calories, gm Calories, gm Int steam tab 0.99935
Calories, gm Calories, gm (mean) 0.99856
Calories, gm Calories, gm @ 20oC 1.00050
Calories, gm cu cm-atm 41.2929
Calories, gm cu ft-atm 0.00146
Calories, gm ergs 4.184 x 107
Calories, gm foot-poundals 99.2878
Calories, gm foot-pounds 3.08596
Calories, gm gram-cm 42664.9
Calories, gm Hp-hours 1.558 x 10-6
Calories, gm joules 4.184
Calories, gm joules (int) 4.1833
Calories, gm kg-meters 0.42665
Calories, gm kw-hours 1.162 x 10-6
Calories, gm liter-atm 0.04129
Calories, gm watt-hours 0.00116
Calories, gm watt-hours (Int) 0.001162
Calories, gm watt-seconds 4.184
Calories, gm (mean) BTU 0.00397
Calories, gm (mean) Calories, gm 1.00144
Calories, gm @ 20oC BTU 0.00397
Calories, gm @ 20oC Calories, gm 0.99949
Calories, kg BTU 3.96832
Calories, kg BTU (Int steam table) 3.99573
Calories, kg BTU (mean) 3.96262
Calories, kg BTU @ 60oF 3.96709
Calories, kg calories, gm 1000
Calories, kg Calories, kg (mean) 0.99856
Calories, kg Calories, kg @20oC 1.0005
Calories, kg cu cm-atm 41292.9
Calories, kg ergs 4.184 x 1010
Calories, kg foot-poundals 99287
Calories, kg foot-pounds 3085.96
Calories, kg gram-cm 4.266 x 107
Calories, kg Hp-hours 0.00156
Calories, kg joules 4184
Calories, kg kw-hours 0.00116
Calories, kg liter-atm 41.292
Calories, kg watt-hours 1.1622
Calories, kg (mean) BTU 3.974
Calories, kg (mean) calories, gm 1001.4
     

Flux of Light                                   Top of Page

 From                                   TO                                  Multiply By

candle power lumens 12.566
     

 

Heat Transfer                                   Top of Page

 From                                   TO                                  Multiply By

BTU/sq ft/min watts/sq in 0.1221
     

 

Inductance                                   Top of Page

 From                                   TO                                  Multiply By

abhenries henries 1 x10-9
     

Intensity of light                                   Top of Page

 From                                   TO                                  Multiply By

bougie decimales candles (Int) 1.0
candles (English) candles (Int) 1.04
candles (German) candles (Int) 1.05
candles (Int) candles (English) 0.96
candles (Int) candles (German) 0.95
candles (Int) candles (pentane) 1.00
candles (Int) carcel units 0.104
candles (Int) hefner units 1.11
candles (Int) lumens/steradian 1

Luminance                                   Top of Page

 From                                   TO                                  Multiply By

candles/sq cm candles/sq in 6.452
candles/sq cm candles/sq meter 10000
candles/sq cm foot-lamberts 2918
candles/sq cm lamberts 3.1416
candles/sq in candles/sq cm 0.155
candles/sq in candles/sq ft 144
candles/sq in foot-lamberts 452.39
candles/sq in lamberts 0.4869
     

 

Magnetomotive force                                   Top of Page

 From                                   TO                                  Multiply By

ampere-turns gilberts 1.25664
     

 

Mass                                   Top of Page

  From                                   TO                                  Multiply By

Baht (Thailand) grams 15
bekah (Old Testament) grams 5*
bekah (Old Testament) shekel (Old Testament) 0.5
daltons (Chem) grams 1.66 x 10-24
daltons (Phys) grams 1.659 x 10-24
drachma (Ancient Greece) obolos (Ancient Greece) 6
gamma microgram 1
obolos (Ancient Greece) grams .5*
obolos (Greece) grams 0.1
ounces (advp) drams (advp) 16
uncia (Ancient Rome) obolus (Ancient Rome) 48
     
     
     

Power                                   Top of Page

 From                                   TO                                  Multiply By

boiler Horse power kilowatts 9.8095
boiler horse power BTU/hour 33 471
BTU/hour calorie-kg/hr 0.252
BTU/hour ergs/sec 2.92875 x 106
BTU/hour foot-pounds/hr 777.649
BTU/hour gram-calorie/sec 0.0700
BTU/hour horsepower-hours 0.00039
BTU/hour kilowatts 0.00029
BTU/hour watts 0.29287
BTU/min foot-pounds/sec 12.96
BTU/min horsepower 0.02356
BTU/min kilowatts 0.01757
BTU/min watts 17.5725
calories, gm/hr BTU/hr 0.00397
calories, gm/hr ergs/sec 11622
calories, gm/hr watts 0.00116
calories, kg/hr watts 1.1622
calories, gm/min BTU/min 0.00397
calories, gm/min ergs/sec 697333
calories, gm/min watts 0.0697
calories, kg/min watts 69.733
calories, gm/sec BTU/sec 0.00397
calories, gm/sec foot-pounds/sec 3.086
calories, gm/sec horsepower 0.0056
calories, gm/sec watts 4.184
calories, gm/sec Planck's constant 6.315 x 1033

 

Resistivity                                   Top of Page

 From                                   TO                                  Multiply By

abohm-cm ohm-cm 10 x 10-9
     

Sound Intensity                                   Top of Page

 From                                   TO                                  Multiply By

bels decibels 10
decibels bels .1

Specific Energy                     Top of Page

 From                                   TO                                  Multiply By

BTU/pound cal, gm/gram 0.55555
BTU/pound foot-pounds/pound 777.649
BTU/pound joules/gram 2.3244
calories, gm/gm BTU/pound 1.8
calories, gm/gm foot-pounds/lb 1399.8
calories, gm/gm joules/gram 4.184
     

Test Instrument                                   Top of Page

 From                                   TO                                  Multiply By

abvolts/cm (O scope) volts/cm (O scope) 1 x 10-8
abvolts/cm (O scope) volts/inch (O scope) 2.54 x 10-8

 

Viscosity                                   Top of Page

 From                                   TO                                  Multiply By

     
     

Work                                   Top of Page

 From                                   TO                                  Multiply By

 

Abbreviations and symbols used in tables

                                   Top of Page

* Factors with this symbol are approximate
abs Absolute
advp avoirdupois
Brit British
chem Chemical
Col Colonial
Int International
Obs Obsolete

 

This site was last updated 01/09/03