Abbreviations for measures
gal or gals = gallons g = gram
O, pt or pts = pints kg = kilogram (1,000g)
oz or ozs = ounces mg = milligram (1/1,000g)
fl.oz = fluid ounces mcg or µg = microgram (1/1,000,000g)
lb or lbs = pounds L or l = litre (or liter in US)
st = stones cl = centilitre (1/100 L)
gtts = drops ml = millilitre (1/1000 L)
iu = international units µl = microlitre (1/1,000,000 L)
m or min = minims meq or mEq = Milliequivalent
hr = hour m = metre (or meter in US)
min = minutes mm = millimetre (1/1,000 m)
sec = seconds cc or cu.cm = cubic centimetres (1/1,000 L)
ft = foot or feet dr = dram or drachm
gr = grains sc = scruple
t or tsp = teaspoon T or tbsp = tablespoon
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UK/US Liquid Metric Conversions
1 gallon (gal)(US) = 3785 ml 1 gallon (UK) = 4546 ml
1 pint (pt)(US) = 473.18 ml 1 pint (UK) = 568.26 ml
16 fluid ounces (US) = 473.18 ml 20 fluid ounces (UK) = 568.26 ml
8 fluid ounces (US) = 236.59 ml 10 fluid ounces (UK) = 284.13 ml
4 fluid ounces (US) = 118.29 ml 5 fluid ounces (UK) = 142.07 ml
1 fluid ounce (fl.oz)(US) = 29.57 ml 1 fluid ounce (UK) = 28.41 ml
1cc = 1g = 1ml (approx) 1 teaspoon = 5 ml (approx)
10 minims = 0.616 ml 1 tablespoon = 15 ml (approx)
15 to 16 drops ( gtts ) = 1 cc = 1ml 1 drop = 1 minim approx
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Solid Metric Conversions
1 pound (avoirdupois) = 453.592 g 1/2 grain = 30 mg
1 pound (apothecary) = 373.242 g 1/4 grain = 15 mg
1 ounce (avoirdupois) = 28.35 g 1/8 grain = 8 mg
1 ounce (apothecary) = 31.10 g 1/12 grain = 5 mg
15 grains = 1 g 1/100 grain = 600 mcg
10 grains = 600 mg 1/150 grain = 400 mcg
7 1/2 grains = 500 mg 1/200 grain = 300 mcg
5 grains = 300 mg 1/250 grain = 250 mcg
1 1/2 grains = 100 mg 1/300 grain = 200 mcg
1 grain = 64.79891 mg 1 kilogram = 2.2 pounds
1 pound = 0.45 kilograms (kg) 1 stone (14 pounds) = 6.35 kg
1000 mcg = 300 to 7000 iu (below) 1000 mcg = 1 mg
1 scruple = 1.2 g 1 drachm = 28.8 g
Avoirdupois - a system of weights based on a pound of 16 ounces or 7000 grains.
Apothecary - a pharmacist, a druggist
