US Apothecaries' Weight Units Converter

From:	To:
pound [lb apoth.] ounce [oz apoth.] drachm [dr apoth.] scruple [scr apoth.] grain [gr apoth.]	pound [lb apoth.] ounce [oz apoth.] drachm [dr apoth.] scruple [scr apoth.] grain [gr apoth.]
1 \(\left[\mathrm{lb apoth.}\right] = 0.3732417216 [kg]\)

As with the UK units, these are now completely obsolete and their use is prohibited by the American Pharmacopoeia (USP).