Unit Conversion Factors

Atomic and Physical Constants

Avogadro's Number = 6.023E23 atoms per mole
Planck's Constant = 6.624E-27 erg seconds
Velocity of Light (c) = 3E10 centimeters per second = 186,000 miles per second
Light Year (1) = 9.47E15 meters per year
Electronic charge on one electron = 1.6E-19 coulombs
One Atomic Mass Unit (Carbon-12 scale) = 1.66E-27 kilograms
One Atomic Mass Unit (Carbon-12 scale) = 931 MeV
Electron Rest Mass = 9.1E-28 grams
Energy Equivalent of One Electron = 511 keV
Atomic Weight of One Electron = 0.000548 atomic mass units
Atomic Weight of One Proton  = 1 atomic mass unit
Ratio of Proton Mass to Electron Mass = 1836
Atomic Weight of One Neutron = 1 atomic mass unit
Atomic Mass of an Alpha Particle = 4 atomic mass units
Base of Natural Logarithms = 2.71828
Pi = 3.1415926535 . . . etc.

Energy

1 rad (or rem) = 0.01 joules per kilogram
1 gray (or sievert) = 1 joule per kilogram
1 rad = 6.24E7 MeV per gram
1 rad = 100 ergs per gram
1 electron volt = 1.6E-12 ergs
1 electron volt = 1.6E-19 joules
1 electron volt = 0.001 keV
1 electron volt = 1E-6 MeV
1 erg = 1E-7 joules
1 erg = 6.24E5 MeV
1 erg = 6.24E11 electron volts
1 MeV = 1.6E-6 ergs
1 joule = 1E7 ergs

Energy Product

1 MGOe = 1E6 Gs.OE
1 OE = 1 g = 79.6 A/meter
1 MGOe = 7.96 mWs per cubic centimeter
1 MGOe = 7.96 kJ per cubic meter

Electrical

1 watt = 1 joule per second

Field

1 Oersted = 0.795 Amp/cm
1 Oersted = 1 gram
1 Amp/meter = 0.01 Amp/cm
1 kAmp/meter = 12.56 Oersteds

Fission

1 watt = 3.121E10 fissions per second

Fluid Flow Rates

1 liter per minute = 15.85 gallons per hour
1 cubic foot per second = 448.8 gallons per minute
1 cubic foot per minute = 472 cubic centimeters per second
1 cubic centimeter per second = 3.60 liters per hour

Flux

1 Maxwell = 1E-8 Webers
1 Maxwell = 1E-8 volt-seconds

Induction or Flux Density

1 Gauss = 1E-4 Tesla
1 Gauss = 1E-6 Volt-seconds per square centimeter

Length and Area

1 centimeter = 0.3937 inches
1 meter = 100 centimeters
1 meter = 3.28 feet
1 square meter = 10.76 square feet
1 acre = 4047 square meters

Miscellaneous

1 radian = 57.296 degrees

Power

1 watt = 1E7 ergs per second
1 kilowatt = 6.243E15 MeV per second

Pressure

1 atmosphere = 760 millimeters of mercury (at 0 C)
1 atmosphere = 29.921 inches of mercury (at 0 C)

Radiation

1 rad = 1,000 millirad
1 rad = 0.01 gray 1 rem = 0.01 sievert
1 rem = 1,000 millirem
1 rem = 1,000,000 microrem
1 Roengten = 0.876 rads (in air)
1 gray = 100 rad
1 sievert = 100 rem
1 curie = 1,000,000,000,000 picocurie
1 curie = 37,000,000,000 becquerel
1 megacurie = 1,000,000 curies
1 kilocurie = 1,000 curies
1 curie = 1,000,000,000 nanocuries
1 curie = 1,000,000 microcuries
1 curie = 1,000 millicuries
1 curie = 37,000,000,000 disintegrations per second 1 curie = 2,200,000,000,000 disintegrations per minute
1 millicurie = 37,000,000 disintegrations per second
1 millicurie = 2,200,000,000 disintegrations per minute
1 microcurie = 37,000 disintegrations per second
1 microcurie = 2,200,000 disintegrations per minute
1 nanocurie = 37 disintegrations per second
1 nanocurie = 2,200 disintegrations per minute
1 picocurie = 0.037 disintegrations per second
1 picocurie = 2.22 disintegrations per minute
1 becquerel = 1 disintegration per second
1 becquerel = 2.7E-11 curies
1 becquerel = 27 picocuries

Temperature

C = (F-32) x 5/9
F = (9/5 x C) + 32
0 K = 0 C - 273.16

Time

1 day = 86,400 seconds
1 day = 1440 minutes
1 year = 3.1536E7 seconds (based on 1 year being equal to 365 days)
1 year = 5.256E5 minutes
1 year = 8.760E3 hours

Volume and Mass

1 liter = 1000 milliliters
1 gallon = 3.785 liters
1 cubic meter = 35.31 cubic feet
1 pound = 453.59 grams
1 kilogram = 1000 grams
1 metric ton = 1000 kilograms
1 millimeter = 0.1 centimeter
1 inch = 2.54 centimeters
1 foot = 30.48 centimeters
1 meter = 39.37 inches
1 meter = 0.001 kilometers
1 mile = 1.61 kilometers
1 kilometer = 0.62 miles
1 square meter = 10,000 square centimeters
1 hectare = 100 square meters
1 hectare = 2.471 acres
1 barn = 1E-24 cm2
1 cubic centimeter = 1 milliliter
1 liter = 1,000 milliliters
1 cubic meter = 1E6 cubic centimeters
1 cubic meter = 35.314 cubic feet
1 cubic meter = 1,000 liters
1 cubic foot = 7.481 gallons
1 cubic foot = 28.32 liters
1 gallon = 3.785 liters
1 dpm/m3 = 0.4505 pCi/m3
1 µCi/cm3 = 2.22E12 dpm/m3
1 µCi/cm3 = 2.22E9 dpm/liter
1 milligram = 0.001 grams
1 gram = 0.001 kilograms
1 kilogram = 2.2 pounds
1 pound = 453.6 grams

1 Kg = 1.22ltr (Aprox) Depending upon the gravity

1ft = 12 in
1 in = 2.54 cm
1ft = 12 * 2.54 = 30.48 cm

 

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