# How many grams is an ounce of gold and how much is a gold bar?

At present, it is customary to use gram as the gold measurement unit in China. Although the metric system is adopted in China, this gold measurement unit in China is different from the customary measurement unit "ounces" agreed in the international market. How many grams is an ounce of gold? How much is a gold bar? This article will give you an answer.

1、 How many grams is an ounce of gold
An ounce of gold is equal to 31.103481g, not only gold, but also other precious metals such as platinum, silver and palladium. "Ounce" is the international common gold measurement unit. An ounce is about one or two of China's old weights and measures (16 Liang is a catty). The gold received by banks under the old system of weights and measures should be converted to 1.0047 ounces according to the old system. In other words, the old system of 1 liang is slightly more than 1 ounce. Now the new system of weights and measures, an ounce is equal to 31.1035 grams, which is equal to 0.622 liang of the market weight system.
An ounce is both a unit of weight and a unit of length.
In the unit of length, 1oz represents the thickness of the copper foil of the PCB is about 36um, which is derived from the thickness formed by spreading the pure copper with the density of 8.9g/cm ^ 3 to the area of 1 square foot (= 144 inches).
Ounces is an English unit of measurement with the symbol ounce or oz. As a unit of weight, it is also called English Liang.
In terms of gold trading, the ounce is the international common gold measurement unit. As the main unit on the international trading board, the ounce is equivalent to the status of "gram" in China. However, it is not like China. No matter what it is like, one catty is one catty, and one gram is one gram. Because ounces are also units of length, foreign ounces are weighed with different objects, and the weight of one ounce volume is different, which is generally classified by industry. For example, 1 oz gold = 31.1034768 g, and 1 oz woven fabric = 28.375 G. The weight will be different. After scientific calculation, there are standard data on how many grams of gold is equal to per ounce.
In the measurement of spot gold, the weight unit used is troy ounces, that is, one ounce can be converted into 31.1035 grams. For example, the current price of spot gold is 1072.06 U.S. dollars. If you want to convert it into grams, it is:
1072.06/31.1035 = 34.4675 USD / g ≈ 34.47 USD / g
If you want to convert the US dollar unit into RMB, you need to multiply it by the exchange rate of USD to RMB. For example, the current exchange rate is 1 USD = 6.4581 RMB yuan, then:
4675 USD / g = 34.4675 * 6.4581 = 222.5946 yuan / g ≈ 222.59 yuan / g.

2、 How much is a gold bar
A standard bar weighs 116.64 grams (3.746 ounces). There is no uniform regulation on the weight of gold bars. When the gold bars are circulated in the gold exchange or market, the standard weight specifications of standard gold bars are 10g, 30g, 50g, 100g, 300g, 500g and 1000g respectively, and the quality of gold is 99.99%.
For the current popular gold bars in the market, there are 2 ounces, 5 ounces and 10 ounces. According to today's sales price of 8043.37 yuan / ounce, the gold bars are worth 16086.74 yuan, 40171.85 yuan and 80433.70 yuan respectively.
As for the standard gold bars of Western Han Dynasty, which are also popular in the market, they weigh 10 ounces and are worth 80433.70 yuan at the latest selling price of 8043.37 yuan / ounce.
I'd like to share with you today how many grams of gold an ounce is and how much a gold bar costs.

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