Dosage Formulas and Conversions

Volume

60 minims = 1 dram = 5cc = 1tsp

4 drams = 0.5 ounces = 1tbsp

8 drams = 1 ounce

16 ounces = 1pt.

32 ounces = 1qt.

Weight

60 grains = 1dram 1/60 grain = 1mg

8 drams = 1 ounce 15 grains = 1g

12 ounces = 1 lb. 2.2 lbs. = 1kg

Household to Apothecary

1tsp = 1 dram

1tsp = 60 gtts (drops)

3tsp = 0.5 ounce

1tbsp = 0.5 ounce

Household /Apothecary to Metric

1tsp=5cc 1fl.dram=4cc

3tsp=1tbsp 4drams=0.5oz

15cc=1tbsp

1tbsp=0.5oz or 15cc     8drams=2tbsp(1oz) 30cc=2tbsp(1oz)

2tbsp=1oz or 30cc

1cc=16minims

1pt.=16oz or 480cc

500cc=0.5L or 1pt.

1qt=32oz or 960cc    1000cc=1L or 1qt.

 

 

Temperature Conversion

C to F            (C X 1.8) + 32 = F

F to C           (F - 32) X 0.56 = C

 

 

IV Calculations

Cal Factor for mg/min

Cal Factor = (amt of drug in mg) / (cc solution) / (60 min/hr)

mg/min = Cal factor X Rate on IV pump

 

Cal Factor for mcg/kg/min

(amt of drug in mg) X (1000) / (cc solution) / (60) / (wt in kg)

mcg/kg/min = Cal Factor X Rate on IV pump

 

 

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