So you finally learned what rems are and next thing you know you read a reference to Sieverts. Is this some plot to keep you uninformed?? Do you feel a case of conversion aversion coming on? Don’t fear — IEER’s Conversion Table can help you. In this case, you would simply scroll down to the word “Sievert” to find that it equals 1/100th of a rem. (You can use the “find” feature in your Web browser to find the terms more quickly.) This table also converts pounds to grams, yards to meters and picocuries to becquerels, and lots more! Happy converting!

table of Unit Conversions
Unit Conversion Practice Worksheet.
If you have and you want multiply by
air, dry (m3) grams 1185
americium-241 (curies) americium-241 (grams) 0.286
americium-241 (grams) americium-241 (curies) 3.49
Angstrom centimeters 10-8
barrels (55 gal.) cubic feet 7.35243
barrels (55 gal.) cubic meters 0.20820
barrels (US liquid) gallons (US) 31.5
becquerels curies 27 x 10-12
Btu joules 1054.35
calories joules 4.18400
Celsius Fahrenheit multiply by 1.8 and add 32
centimeters inches 0.39370
centimeters meters 0.01
centimeters microns 10 000
centimeters yards 0.01094
curies becquerels 37 x 109
curies picocuries 1012
ergs joules 10-7
dpm curies 4.5 x 10-13
gallons liters 3.79
grains grams 0.06480
grams ounces 0.03527
hours years 0.0001141
inches centimeters 2.54
inches feet 0.083
inches miles 1.58×10-5
in. mercury atmospheres 0.03342
joules Btu 9.48451×10-4
joules ergs 107
joules tons TNT 2.38095×10-10
joules Watt-hours 0.00027
joules Watt-seconds 1
joules/second Watts 1
kilograms pounds 2.20462
kilometers miles 0.62137
liters cubic centimeters 1 000
liters cubic feet 0.03532
liters cubic meters 0.001
liters gallons (US) 0.26418
liters quarts 1.05672
meters centimeters 100
meters feet 3.28084
meters yards 1.09361
microCi/gram picoCi/gram 106
microCi/km2
dpm/100 cm2
0.022
microCi/m2
dpm/100 cm2
2.2 x 104
micrograms/m3
(weight in air)
ppm (volume) 0.0241/molecular weight
microns Angstrom 10 000
microns centimeters 0.0001
miles centimeters 160 934.4
miles kilometers 1.609344
milliliters fluid ounces 0.0338
millimeters centimeters 0.1
nanoCi./m2
dpm/100m2
22.22
nanograms/gram ppb (parts/bil) 1
nanograms/liter ppb 0.001
ounces (US fluid) cubic centimeters 29.57373
ounces (US fluid) milliliters 29.57373
percent ppm 10 000
picocuries becquerels 0.037
picocuries curies 10-12
picoCi./gram dpm/gram 2.22
plutonium-238 (curies) plutonium-238 (grams) 0.054
plutonium-238 (grams) plutonium-238 (curies) 18.6
plutonium-239 (curies) plutonium-239 (grams) 15
plutonium-239 (grams) plutonium-239 (curies) 0.067
plutonium-240 (curies) plutonium-240 (grams) 4.11
plutonium-240 (grams) plutonium-240 (curies) 0.24
plutonium-241 (curies) plutonium-241 (grams) 0.0083
plutonium-241 (grams) plutonium-241 (curies) 121.2
pounds grams 453.59237
pounds kilograms 0.45359
power energy time
ppb nanograms/gram 1
ppb nanograms/liter 1 000
ppb ppm 0.001
ppm grains/gallon 0.0584
ppm percent 0.0001
ppm ppb 1 000
quarts liters 0.94633
rems Sieverts 0.01
seconds years 3.171 x 10-8
Sieverts rems 100
square centimeters square feet 0.00108
square feet square centimeters 929.0304
square feet square meters 0.09290
square meters square feet 10.76391
square miles acres 640
therms Btu 100 000
tons TNT Btu 3 983 500
tons TNT joules 4.2 x 109
tons (metric) pounds 2204.6226
U-234 (curies) U-234 (grams) 154.4
U-234 (grams) U-234 (curies) 6.48 x 10-3
U-238 (curies) U-238 (grams) 2.81 x 106
U-238 (grams) U-238 (curies) 3.56 x 10-7
Watt-hours Btu 3.41443
Watt-hours joules 3 600
Watts Btu/hour 3.41443
Watts joules/second 1
Watts-seconds joules 1
yards centimeters 91.44
yards meters 0.9144
years hours 8760
years seconds 31.54 x 106