Conversion Chart PDF

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Conversion chart for dosage calc...

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Texas A&M University-Corpus Christi College of Nursing and Health Sciences NURS 4628 – Care of the Adult II

Conversion Chart The metric system is the preferred system for medication administration and is used exclusively in the United States Pharmacopeia. The basic units are multiplied and divided by a multiple of 10 to form the entire system.

Abbreviations The following are the preferred abbreviations in order to minimize medication errors Metric System Kilogram: kg Gram: g Milligram: mg Microgram: mcg Kiloliter: kL Liter: L Milliliter: mL Centimeter: cm

Apothecary System Grains: gr Ounce: oz Fluid ounce: fl oz

Household Measures Drop: gtt Teaspoon: tsp Tablespoon: tbsp Cup: c Pint: pt Quart: qt Gallon: gal Pound: lb

Equivalency measures 1 drop = 0.0167 mL 1 tsp. = 5 mL 1 tbsp. = 15 mL 1 cup = 8 fl oz = 240 mL 1 pt. = 2 cups = 16 oz = 480 mL 1 qt = 2 pt. = 4 cups = 32 oz = 960 ml 1 gal = 4 qt = 8 pt. = 16 cups = 128 oz = 3840 mL 1 gr = 60 mg

Note: a) 1 oz is 30 (mL if it is liquid, g if it is solid

1 oz = 30 g 1 fl oz = 30 mL 1 inch = 2.54 cm 1 foot = 30 cm 1 kg = 2.2 lbs 1 kg = 1000 g 1 g = 1000 mg 1 mg = 1000 mcg 1 L = 1000 mL

Microdrip Tubing 60 gtts/mL Macrodrip Tubing will be supplied can be 10, 12, 15, 18, or 20 gtts/mL

b) 1 L is 1000 mL but 1qt is 960 mL

Conversions in the metric system Converting from kg to g to mg to mcg is done in terms of 1000 which means that: 1 kg = 1000 g 1 g = 1000 mg 1 mg = 1000 mcg The same works for the measures of volume 1kL = 1000 L 1 L = 1000 mL 1 mL= 1000 mcL When converting from kg to g, from g to mg and from mg to mcg in decimals, move the decimal point 3 places to the right. Example: 7.5 g = 7500 mg When converting from mcg to mg, from mg to g and from g to kg in decimals, move the decimal point 3 places to the left. Example: 650 mcg = 0.65 mg From larger unit to smaller unit move decimal point 3 places to the right (= multiplying by 1000) From smaller unit to larger unit move decimal point 3 places to the left (= dividing by 1000)

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