Page 19 - A Guide to Dosage Form 1

HOUSEHOLD MEASURES AND METRIC LENGTH

HOUSEHOLD MEASURES
1 foot (ft) = 12 in

1 inch (in) = 2.54 cm
1 meter (m) = 100 cm = 39.4 in
= 3.283 ft

HOUSEHOLD MEASURES AND METRIC VOLUME

HOUSEHOLD MEASURES
1 teaspoonful (tsp) = 5 mL

1 tablespoonful = 3 tsp = 15 mL
(tbs)
1 glassful = 8 fl. oz = 240 mL

1 fluid ounce = 2 tbs = 30 mL

APOTHECARY AND AVOIRDUPOIS

The apothecary measurement uses grain (gr), scruple (s), drachm (dr), ounce (oz) and pound (lb).
The avoirdupois measurement uses ounce (oz), pound (lb) and ton. Most of these measurements
have been replaced by the modern technique – the metrics, but some remains and are still being
used until current time. Those remains are listed in the table below.

WEIGHT MEASURES
1 ounce (oz) = 28.35 g

1 pound (lb) = 454 g
1 kg = 2.2 lb
1 ton = 907.2 kg = 2000 lb