Ounces to Catties (Hong Kong) (oz to catty)

1 ounce equals 0.046875 catties (Hong Kong) exactly.

1 ounce = 0.046875 catties (Hong Kong)

How to convert ounces to catties (Hong Kong)

To convert ounces to catties (Hong Kong), multiply the number of ounces by 0.046875. This factor is exact. To go the other way, multiply catties (Hong Kong) by 21.33333333 (rounded).

catties (Hong Kong) = ounces × 0.046875

Example: 10 ounces = 0.46875 catties (Hong Kong).

About these units

Ounce (oz)

US & ImperialCurrent unit

One sixteenth of a pound, exactly 28.349523125 g. Used for food, mail and consumer goods in the US and UK.

A twelfth part is what ounce originally meant. It comes from the Roman uncia, one twelfth of the Roman pound, a word that also gave English the inch. The abbreviation oz does not come from English at all but from the Italian onza or oncia. Over the centuries many regions and trades used different ounces: the English Tower ounce of 29.16 g was abolished by Henry VIII in 1527, and the Dutch ons was redefined as exactly 100 g in 1820.

The avoirdupois ounce used for everyday goods is one sixteenth of a pound, exactly 28.349523125 g or 437.5 grains, the standard in the US and under the UK imperial system. It is not the same as the troy ounce for precious metals, and neither is the fluid ounce, which measures volume. Ounces still describe portions such as steaks and burgers, and they show up in unexpected places: fabric is graded by weight per area, so a 16 oz denim is a heavy cloth, and the copper on a circuit board is specified in ounces, where 1 oz is roughly 34.7 micrometres thick.

1 ounce = 0.02834952313 kilograms (approximately).

Sources: Wikipedia: Ounce; NIST Guide to the SI, Appendix B.8 (mass conversions)

Catty (Hong Kong) (catty)

ChineseTraditional unit (still used in some regions)

Exactly 1⅓ pounds (about 604.79 g). The legal Hong Kong catty, used in markets.

Kati, the Malay word behind catty, reached English through traders along the South China coast, and the Hong Kong version is the one most travellers meet in wet markets today. In 1884 Hong Kong law tied the catty to British weights as exactly one and one third avoirdupois pounds. With the pound taken as 0.45359265 kg, that gives 604.78982 g, the figure used here, which is a little over 600 g.

The Hong Kong catty is 16 taels and 100 of them make a picul of about 60.48 kg. That makes it heavier than the 500 g jin of mainland China, where the market system was redefined in 1930 and again in 1959 to ten liang per jin. Chinese weights themselves have wandered, from about 250 g in the Pre-Qin period to about 590 g under the Ming and Qing, with 16 liang per jin throughout. Vegetables, meat and herbs in Hong Kong are still often sold by the catty, and shops in Malaysia and Singapore use almost the same value, 604.79 g and 604.8 g respectively.

1 catty (Hong Kong) = 0.6047898267 kilograms (approximately).

Sources: Wikipedia: Catty; Wikipedia: Chinese units of measurement; Wikipedia: Hong Kong units of measurement

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