Previous Page...   Printer Version Science Constants - Avoirdupois Ounce Symbol: oz avdp oz (av.) oz Value: 2.834952313 × 10-2 kg 0.0625 lb (av.) 16 drachms (av.) Category: - Units of Mass Description: The ounce is still a legal unit of weight in America, but has since been replaced by the SI kilogram elsewhere.   [ H O M E ] [ S C I E N C E ] [ M A T H S ] [ A S T R O N O M Y ] [ Download ] [ Shop ] [ Contact ] [ About ]