What Is a Gold Ounce (Oz)? Converting 1 Gold Ounce to Chi, Luong, and Grams

Ounce is a familiar unit of measurement in many Western countries, especially in the field of gold, silver, and platinum jewelry. However, in Vietnam, this unit of measurement is not yet widely known and used, so many people still do not clearly understand ounces. So what is an ounce, 1 ounce of gold when converted into lượng, chỉ, and cây, what would it be? Let's find out through the article below!

What is 1 ounce of gold?

A gold ounce is a Western tael, transliterated into Vietnamese as “aoxơ”, abbreviated as oz. Depending on the field, this unit may be written differently such as: ons, unze, once. It is commonly used in the UK and the US to measure volume, mass, and the weight of gold. 

Ounce is a common unit of measurement worldwide

This is a unit of measurement commonly used around the world. Currently, there are 5 different types of oz:

• Metric ounce: This unit is abbreviated as ons and is used to measure distance.
• Apothecaries' ounce: Abbreviated as U+2125 and used by pharmacists. However, this unit is no longer used today.
• Maria Theresa ounce: A type of ounce used in Ethiopia – a country in Africa – and some European countries.
• International avoirdupois ounce: Abbreviated as oz, this is the most commonly used unit in the United States and is a common unit of weight. 1 international avoirdupois ounce ~ 28.35 grams.
• International troy ounce: Also called the Western tael (different from the Vietnamese tael (lạng)), abbreviated as ozzt. The troy ounce is often used to weigh gold, silver, and platinum.

During the development of measurement systems, the ounce has become an important part of the system of measurement.

How many chỉ, lượng, grams, and kg is 1 ounce of gold equal to?

1 ounce of gold is equivalent to approximately 31.1035 grams, about 8.29 chỉ, about 0.829 lượng and about 0.0311 kg. This conversion is based on the "troy ounce" unit commonly used in the international market to price gold, while the Vietnamese market uses the units "chỉ" and "lượng". 

Specifically:

• 1 ounce of gold ≈ 31.1035 grams of gold 
• 1 ounce of gold ≈ 8.29 chỉ of gold (because 1 chỉ = 3.75 grams, so 31.1035 / 3.75 ≈ 8.29) 
• 1 ounce of gold ≈ 0.829 lượng of gold (because 1 lượng = 10 chỉ, so 8.29 / 10 ≈ 0.829) 
• 1 ounce of gold ≈ 0.0311 kg of gold 

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How many USD is 1 ounce of gold worth?

1 ounce of gold is worth about more than 4,000 USD, but the exact figure changes with daily market fluctuations, because the gold price (XAU/USD) often fluctuates. Currently, as of 8/10/2025, 1 ounce of gold is approximately 4,027.8 USD

However, because the world gold price changes continuously, similar to the USD price, it is very difficult to calculate exactly how many USD 1 ounce equals. This conversion is quite complicated and you need guidance from experienced people with high banking expertise and professionalism. And the price will be based on many different market factors:

• Current demand for gold in the market.
• Gold and USD prices at the time of conversion.
• Interest rates for gold savings deposits.
• The inflation rate of the country.
• Monetary policy by country. 

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Notes when buying gold in ounce form

When buying and selling gold in the world market, the ounce is the unit used for transactions. Some notes if buying gold by ounce:

• First, you should convert the number of gold ounces into units such as chỉ, lượng, or cây of gold so that it is easier to estimate. From there, you can more easily decide what value is suitable for you to buy.
• The gold price will be calculated based on the number of gold ounces, so you cannot track gold price fluctuations in Vietnam, but must follow fluctuations in the global gold market. World gold prices will be lower than domestic gold prices because domestic gold reserves are still quite limited.
• Not only do you need to convert ounces into Vietnamese measurement units, but you also need to convert according to currency units. For example, when you buy gold in the US, the gold price will be calculated in USD (USD/ounce). Therefore, you should also convert it into Vietnamese currency because exchange rates and transaction fees may affect the final price you have to pay.
• Taxes and regulations in the country where you buy gold. For example, if you buy gold in the US, there will be taxes applied to gold import and export. So to be sure, you should learn about the local regulations on gold and what tax rates will apply during the purchase process.
• Abroad, there are many forms of gold trading such as: gold certificates, gold exchanges, or gold futures contracts,… This gives you more options for gold investment, and the gold price will still be calculated based on the ounce unit.

Thus, the ounce is a unit of measurement that has been used for a very long time, from ancient times until now. To make transactions easier, we should also know 1 ounce of gold when converted into the units lượng, chỉ, and cây. This helps you understand better and be able to invest in gold in ounce form more effectively. Above is the information that Jemmia shared, hopefully it will help you gain a more general overview.

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