HOSA medical math conversions

1 teaspoon (tsp) in mL

5 mL

1 tablespoon (tbsp) in teaspoons

3 tsp

1 tablespoon (tbsp) in mL

15 mL

1 fluid ounce (fl oz) in tablespoons

2 tbsp

1 fluid ounce (fl oz) in mL

30 mL

1 cup in fluid ounces

8 fl oz

1 cup in mL

240 mL

1 pint (pt) in cups

2 cups

1 pint (pt) in mL

480 mL

1 quart (qt) in pints

2 pints

1 quart (qt) in mL

960 mL

1 kilogram (kg) in pounds

2.2 lbs

1 pound (lb) in kg

0.454 kg (or divide lbs by 2.2)

1 grain (gr) in mg

60 mg

1 dram (dr) in grains

60 grains

1 dram (dr) in mL

4 mL

1 minim (m) in drops (gtt)

1 drop (gtt)

1 minim (m) in mL

0.06 mL

Apothecary Notation Order

Unit comes BEFORE the Roman numeral (e.g. gr v = 5 grains)

gr x in milligrams

600 mg (10 grains x 60 mg)