How many grams a catty?

During the Qin and Han dynasties, a catty was 256 grams; During the Eastern Han and Wei Jin Dynasties, a catty was 224 grams; During the Sui, Tang and Northern Song Dynasties, a catty was 640 grams; During the Southern Song Dynasty and the Ming and Qing Dynasties, it was 600 grams per catty.

In Han and Tang Dynasties, one stone = 120 Jin, one Jin = 16 Liang, and one Liang =24 baht (one Liang in Song Dynasty = 10 yuan), which was used in Ming and Qing Dynasties. From the beginning of the concept of "gold" to the end of the Republic of China, the "gold" in past dynasties was 16, not today's 10. With the weight of "Jin", it is easy to calculate the weight of "two" and divide it by 16.

1, Qin and Western Han Dynasties, 1 kg = 16 Liang = 16* 16 g =256 g.

2. During the Eastern Han and Wei Dynasties, 1 kg = 16 beam = 16* 14 g =224 g.

3. During the Sui, Tang and Northern Song Dynasties, 1 kg = 16 Liang =16 * 40g = 640g.

4. During the Southern Song Dynasty and the Ming and Qing Dynasties, 1 kg = 16 Liang = 16 * 37.5g = 600g.

Extended data:

The source of 500 grams per catty

The current system of 12 1 kg (500g, 0.5kg) began in the late 1950s and was initiated by Mr. Jiang, a native of Wenzhou at that time. After the suggestion of 12 1 kg was put forward, it quickly got the attention of the Central Administration for Industry and Commerce.

From 65438 to 0958, the Central Administration for Industry and Commerce began to carry out the comprehensive reform of weighing instruments nationwide on the basis of pilot projects in many places across the country, and 12 scales were widely used. Subsequently, the central government awarded Jiang the certificate of "China Weighing Instrument Reform Consultant".

Jiang is a pioneer of weighing instrument reform, which has historical and practical significance and is deeply loved by people. In the spring of 2003, when Mr. Jiang died, a pair of couplets was particularly eye-catching, which read: "A catty is changed to twelve Liang, and a catty is twelve Liang. Being a man and doing accounts are the same thing. One billion people, one billion people, it's unusual to be willing to do it. "

Baidu Encyclopedia-One Jin