Vietnam Gold Calculator
Calculate the VND value of gold by weight (phân, chỉ, lượng/cây, gram) and purity using the live world gold price, and convert between Vietnamese and metric gold units.
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9999 gold (24K, 99.99%)
Chỉ (đồng cân)
$
Vietnamese gold unit reference table
| Unit | Weight | Conversion |
|---|---|---|
| 1 phân | 0.375 g | = 1/10 chỉ |
| 1 chỉ (đồng cân) | 3.75 g | = 10 phân = 1/10 lượng |
| 1 lượng (cây) | 37.5 g | = 10 chỉ = 100 phân |
| 1 troy ounce | 31.1035 g | ≈ 0.8294 lượng |
| 1 kg | 1,000 g | ≈ 26.667 lượng = 266.67 chỉ |
| 1 lượng | 37.5 g | ≈ 1.20565 troy ounce |
This calculator is for informational purposes only. It does not constitute financial advice.
Vietnamese gold calculator. Convert chi, luong and cay to grams, troy ounces and dollar value.
A Vietnamese gold calculator converts chi, luong (cay) and phan into grams and troy ounces and estimates their value at the live world gold price. You choose the purity — from 9999 down to 10K — and a unit, and it returns the gram weight, the price per chi, the price per luong and the total value, with the world price fetched automatically.
What Are Vietnamese Gold Units (Chi, Luong, Cay)?
In Vietnam, gold is weighed in a traditional system that looks nothing like grams or troy ounces on the surface, yet maps onto them exactly. One chỉ (written "chi" in English, and sometimes called a đồng cân) is 3.75 grams. Ten chỉ make one lượng — the unit most people mean when they say a Vietnamese "tael", and the same thing southern Vietnamese call a cây — which is exactly 37.5 grams. A phân is one-tenth of a chỉ, or 0.375 grams (you will see it rounded to 0.38 g in casual sources). So the whole ladder is decimal: 1 lượng = 10 chỉ = 100 phân = 37.5 g.
Because the world gold market quotes prices per troy ounce (31.1035 g), the single number that connects a Vietnamese gold holding to the global spot price is 1 lượng ≈ 1.20565 troy ounces, and 1 chỉ ≈ 0.12057 troy ounces. That ratio is why one lượng of pure gold is worth a little more than one troy ounce at any given spot price, and it is the bridge this calculator uses to turn Vietnamese units into a world-price value.
"Tael" is where most English-language sources go wrong. The word covers several different weights across Asia, and they are not interchangeable. The Vietnamese lượng and the Taiwanese tael are both exactly 37.5 g, but the Hong Kong tael is 37.429 g and the mainland-Chinese liǎng is 50 g under the modern metric system. Even Wikipedia's Vietnamese-units page lists the lượng at 37.8 g in its general weight table and at 37.5 g in the precious-metals row, without explaining the gap. For gold bought, sold, saved or inherited in Vietnam, the correct figure is 37.5 g — the weight stamped on every SJC and PNJ bar and the reason bullion dealers list a Vietnamese "một lượng" bar as 1.2057 troy ounces of .9999 gold.
Vietnamese gold also carries a purity label, tuổi vàng, measured on a ten-point "age" scale. Vàng 9999 ("four nines", 99.99% pure, 24K) is the investment standard — the soft, deep-yellow pure gold that Vietnamese savers call vàng ta. Alloyed gold — vàng tây — is harder and cheaper: 18K is 75% gold, 14K about 58.3%, 10K about 41.7%. Purity multiplies straight into value, so one chỉ of 18K is worth about three-quarters of one chỉ of 9999 at the very same weight. This is the step most foreign buyers miss when they price a ring against the headline "gold price".
The calculator runs in two modes. Value mode estimates what the gold content is worth at the current world spot price for the weight and purity you choose, showing the price per chi, price per luong and a total that can include a workmanship fee. Converter mode turns any amount between phân, chỉ, lượng, gram and troy ounce with no price needed, so it works even when the market is closed. One caveat the tool states plainly: the value it shows is the intrinsic, world-price value of the metal. Inside Vietnam, the SJC gold bar trades at a State-Bank-controlled premium — historically around 15 to 20 million VND per lượng above the world price, and at times far more — because of the SJC supply monopoly that operated under Decree 24 until Vietnam moved to end it with Decree 232 in 2025. Treat the number here as the world-price benchmark, then check sjc.com.vn or pnj.com.vn for the domestic quote before you buy or sell.
Vietnamese Gold Unit Conversion Table (Grams and Troy Ounces)
| Unit | Grams | Chi | Lượng (cây) | Troy ounces |
|---|---|---|---|---|
| 1 phân | 0.375 g | 0.1 chi | 0.01 lượng | 0.01206 oz |
| 1 chỉ (đồng cân) | 3.75 g | 1 chi | 0.1 lượng | 0.12057 oz |
| 1 lượng (1 cây) | 37.5 g | 10 chi | 1 lượng | 1.20565 oz |
| 1 troy ounce | 31.1035 g | 8.2943 chi | 0.82943 lượng | 1 oz |
| 1 kg | 1,000 g | 266.67 chi | 26.667 lượng | 32.1507 oz |
| 1 Hong Kong tael | 37.429 g | 9.981 chi | 0.9981 lượng | 1.20337 oz |
How to Use the Vietnamese Gold Calculator
The tool has two modes. Pick the one that matches what you want to know, then enter your numbers — you never type in a gold price.
Value mode — estimate what gold is worth:
1. Choose the purity (tuổi vàng): 9999 (24K), 999, 22K/916, 18K/750, 14K/585 or 10K/416.
2. Choose a unit (phân, chỉ, lượng/cây or gram) and enter the amount — for example 2 chỉ or 1 lượng.
3. If you are pricing jewelry or a ring, add the workmanship fee (optional).
4. Read the results: estimated value, price per 1 chỉ, price per 1 lượng and the total including any fee.
The 24K price per gram is pulled automatically from the world spot price (XAU) and shown only for reference — you cannot and do not need to enter it yourself.
Converter mode — convert weight, no price required:
1. Choose the source unit (phân, chỉ, lượng/cây, gram or troy ounce).
2. Enter the amount you want to convert.
3. The tool instantly shows the equivalent in every other unit.
One thing to keep in mind: the value shown is the intrinsic worth of the metal at the world price. A real Vietnamese shop quote adds the domestic SJC premium, the dealer's buy/sell spread, and — for jewelry — the making charge. Use the tool's figure as your benchmark, then compare it against the live quotes at sjc.com.vn or pnj.com.vn.
Worked Vietnamese Gold Examples
How much is 1 chỉ of 9999 gold worth?
Suppose the world 24K price is 130 US dollars per gram (a round figure for illustration only — not today's price; the live tool fills in the current spot). One chỉ of vàng 9999 weighs 3.75 grams, so the value is 3.75 × 130 × 0.9999 ≈ 487 US dollars.
That is the intrinsic, world-price value of the gold. At a Vietnamese shop the ticket price for the same chỉ is higher, because it adds the domestic SJC premium and the dealer's margin, and the shop will buy it back for less than it sells.
1 chỉ across purities (why 18K is not 9999)
The same chỉ (3.75 g) is worth very different amounts depending on tuổi vàng. Using the 130 US dollars per gram illustration:
| Purity | Factor | Value of 1 chỉ |
|---|---|---|
| 9999 (24K) | 0.9999 | ≈ $487 |
| 22K / 916 | 0.916 | ≈ $447 |
| 18K / 750 | 0.75 | ≈ $366 |
| 14K / 585 | 0.583 | ≈ $284 |
| 10K / 416 | 0.417 | ≈ $203 |
More pure gold means more value at the same weight. This is exactly why a chỉ of vàng tây (18K, 14K) always costs less than a chỉ of vàng ta (9999) even though they weigh the same — and why you must set the purity before you trust any value.
1 lượng of gold to grams, troy ounces and dollars
One lượng — one cây — of vàng 9999 is 37.5 grams. In world-market terms that is 37.5 ÷ 31.1035 ≈ 1.20565 troy ounces, so a lượng of pure gold is worth just over one troy ounce of spot gold.
At the 130 US dollars per gram illustration, the metal value is 37.5 × 130 × 0.9999 ≈ 4,875 US dollars. Because a lượng is ten chỉ, the price per chỉ is simply one-tenth of that. This is the fastest way to sanity-check a Vietnamese quote: convert the lượng to troy ounces, multiply by the world spot price you can look up anywhere, and see how far the domestic price sits above it.
Convert 5 chỉ to grams and troy ounces
You have 5 chỉ of gold and want the metric weight. Use converter mode: 5 × 3.75 = 18.75 grams, which is 0.5 lượng (half a cây) and 18.75 ÷ 31.1035 ≈ 0.6028 troy ounces.
This conversion needs no price, so the result never changes with the market. It is the quick bridge between a Vietnamese holding and a world spot price quoted per troy ounce — 18.75 g of 9999 at 130 US dollars per gram would be worth about 2,437 US dollars.
Vietnamese lượng vs Hong Kong tael on a "1 tael" bar
This is the trap in cross-border gold listings. A Vietnamese "1 lượng" bar is 37.5 g (1.20565 oz). A Hong Kong "1 tael" bar is 37.429 g (1.20337 oz). The difference is 0.071 g — small, but at 130 US dollars per gram it is about 9 US dollars per bar, and it compounds across a multi-tael purchase.
Some international gold-price pages quietly price Vietnamese gold using the Hong Kong tael weight, which understates a true lượng by that 0.071 g. When you value Vietnamese gold, always anchor to 37.5 g per lượng — the figure this calculator uses and the weight actually stamped on SJC and PNJ bars.
Pricing a plain 9999 ring with a workmanship fee
A plain 9999 ring weighing 1 chỉ (3.75 g) has a metal value of about 487 US dollars at the 130 US dollars per gram illustration. If the shop charges a small making fee — say 8 US dollars for a simple ring — the total you pay is roughly 495 US dollars.
The key point: that making charge is not returned when you sell. A dealer pays you for the gold content only, so a plain ring or bar keeps more of its value than an ornate piece with a large workmanship fee. If your goal is saving rather than wearing, weight and purity are what you are really buying.
Common Mistakes When Valuing Vietnamese Gold
- Thinking "cây" and "lượng" are different units. They are the same weight — 37.5 g, 10 chỉ. "Cây" is simply the everyday word in southern Vietnam, while "lượng" (or "lạng") is more common in the north.
- Using the wrong tael weight. The Vietnamese lượng is 37.5 g, not the Hong Kong tael's 37.429 g and not the muddled 37.8 g that some conversion tables print. Mainland China's modern liǎng is a completely different 50 g. For Vietnamese gold, always use 37.5 g per lượng.
- Ignoring purity. Pricing an 18K or 14K piece as if it were 9999 overstates its value by a third or more. Always apply the tuổi vàng factor — 0.75 for 18K, 0.583 for 14K, 0.417 for 10K — before you trust a number.
- Confusing the troy ounce with the everyday ounce. Gold is quoted per troy ounce (31.1035 g), which is about 9.7% heavier than the avoirdupois ounce (28.35 g) used for food. Using the wrong ounce throws off every value.
- Treating the world-price value as the shop price. The domestic SJC bar sells at a State-Bank-controlled premium over the world price, dealers keep a buy/sell spread, and jewelry adds a making charge. The tool gives the metal's world-price benchmark, not the counter price.
- Forgetting that workmanship is not refunded. When you buy a ring or chain you pay for gold plus the making fee, but on resale the dealer pays for the gold only. For pure saving, plain 9999 rings or bars lose the least.
Tips for Buying, Saving and Valuing Vietnamese Gold
- For saving or investment, prefer 9999 in plain rings (vàng nhẫn trơn) or bars. They carry almost no making charge and stay close to spot, so you recover more when you sell than with ornate jewelry.
- Memorize the ladder so you can estimate in your head: 1 lượng = 10 chỉ = 100 phân = 37.5 g, and 1 chỉ = 3.75 g. Halve or divide by ten and you can price most amounts without a calculator.
- Anchor to the world price with one ratio: 1 lượng ≈ 1.20565 troy ounces. When the spot price per ounce rises, Vietnamese prices usually follow — but the USD/VND exchange rate matters too, so a weaker dong can push local prices up even when world gold is flat.
- Compare the SJC bar against a 9999 ring before you buy. Both are 99.99% gold, but the SJC bar often carries an extra premium as a state-controlled brand; at times the gap between them runs to millions of dong per lượng.
- Use the tool's value as a benchmark, not a quote. Note the world-price figure, then add the current domestic premium and the shop's making charge to reach what you will actually pay — and expect a lower number when you sell.
- Keep the receipt, packaging and brand seal (SJC, PNJ, DOJI, Bảo Tín Minh Châu). Branded gold with intact paperwork is bought back at a better price than unmarked pieces.
- Travelers and expats: shop where locals shop rather than at mall brand counters, ask to see the piece weighed in front of you, and price it by weight and purity first so a large "design" markup cannot hide in the total.
Vietnamese Gold Terms Explained
Chỉ (đồng cân)
The most common Vietnamese gold unit, equal to 3.75 grams — one-tenth of a lượng and ten phân. In English it is written "chi" and it is the unit retail gold is usually priced in.
Lượng (cây, lạng)
The largest common Vietnamese gold unit, equal to 37.5 grams = 10 chỉ = 100 phân ≈ 1.20565 troy ounces. "Cây" is the southern name and "lạng" a northern variant; all three mean the same weight.
Phân
The small unit used for jewelry and fractional amounts, equal to 0.375 grams — one-tenth of a chỉ. Often rounded to 0.38 g in casual sources.
Tuổi vàng
Vietnamese gold purity, expressed on a ten-"age" scale. Vàng 9999 (24K) is 99.99% pure (10 tuổi); 18K is 7.5 tuổi (75%); 14K about 5.83 tuổi (58.3%). Conversion: tuổi = karat ÷ 24 × 10.
Vàng ta and vàng tây
Vàng ta is near-pure gold (9999, 24K) — soft, deep-yellow, favored for saving. Vàng tây is alloyed gold (18K, 14K, 10K) — harder and cheaper, used mainly for jewelry.
SJC bar and vàng nhẫn
Both are 99.99% gold, but the SJC gold bar (vàng miếng) is a state-controlled brand that often trades at a higher premium, while vàng nhẫn (plain rings) tracks the world price more closely and is easier to trade.
Troy ounce
The international unit for quoting precious-metal prices, equal to 31.1035 grams — about 9.7% heavier than the everyday avoirdupois ounce (28.35 g). One Vietnamese lượng ≈ 1.20565 troy ounces.
Tael
The English word for the East Asian "liang" weight. It is not one fixed value: the Vietnamese and Taiwanese tael are 37.5 g, the Hong Kong tael is 37.429 g, and the modern mainland-Chinese liǎng is 50 g. For Vietnamese gold, "tael" means the 37.5 g lượng.
Vietnamese Gold — Frequently Asked Questions
How many grams is 1 chỉ of gold?
One chỉ of gold is 3.75 grams. From there, 1 lượng (1 cây) is 10 chỉ, or 37.5 grams, and 1 phân is one-tenth of a chỉ, or 0.375 grams.
How many grams and troy ounces is 1 lượng (cây) of gold?
One lượng — the same weight as one cây — is 37.5 grams, which is about 1.20565 troy ounces. It equals 10 chỉ and 100 phân.
How many chỉ are in 1 cây of gold?
There are 10 chỉ in 1 cây. Cây and lượng are the same unit (37.5 grams), so 1 cây = 1 lượng = 10 chỉ = 100 phân.
Is a Vietnamese lượng the same as a Hong Kong or Chinese tael?
No, and this is a common source of error. The Vietnamese lượng is exactly 37.5 grams (the same as the Taiwanese tael). The Hong Kong tael is slightly lighter at 37.429 grams, and the modern mainland-Chinese liǎng is 50 grams. When you value Vietnamese gold, use 37.5 grams per lượng — the weight stamped on SJC and PNJ bars — otherwise a tael-based tool will understate your gold.
How much is a lượng of gold worth?
Multiply the weight in grams by the world 24K price per gram and by the purity: value = 37.5 × price per gram × purity. For pure vàng 9999 that is 37.5 × price × 0.9999. Because a lượng is about 1.20565 troy ounces, its world-price value is just over the spot price of one troy ounce of gold. The calculator does this automatically at the live price; inside Vietnam the shop price will be higher because of the domestic premium.
What does 9999, 18K or tuổi vàng mean?
Tuổi vàng is the purity of the gold. Vàng 9999 is 99.99% pure gold (24K), the standard for saving and investment. 18K is 75% gold, 14K about 58.3%, and 10K about 41.7%, with the rest being harder alloy metals. Purity feeds straight into value, so one chỉ of 18K is worth roughly three-quarters of one chỉ of 9999 at the same weight.
Why is the tool's value different from the price at a Vietnamese gold shop?
The calculator shows the intrinsic value of the gold at the world spot price. A shop quote is different for three reasons: the SJC bar carries a State-Bank-controlled domestic premium (historically around 15 to 20 million VND per lượng, and sometimes much more) because of the SJC supply monopoly that operated under Decree 24 until Decree 232 unwound it in 2025; dealers keep a spread between their buy and sell prices; and jewelry adds a workmanship charge. Use the tool as a world-price benchmark, then confirm the live quote at sjc.com.vn or pnj.com.vn.
Can I use this to value gold jewelry I inherited or was gifted?
Yes, as an estimate. Weigh the piece (or read the chỉ/lượng amount from its hallmark), set the matching purity, and the tool gives the world-price value of the gold content. Remember that a jeweler buys back the gold only, not the original making charge, and that ornate pieces recover less than plain rings or bars. For a firm figure, take it to a reputable shop to be weighed and tested.
Is this Vietnamese gold calculator free?
Yes. The calculator is free and needs no account. You pick the purity, unit and amount; the 24K world price is updated automatically for the value mode, and the unit converter works even without a price.
How accurate is it, and where does the gold price come from?
The unit conversions use fixed constants (1 chỉ = 3.75 g, 1 lượng = 37.5 g), so they are exact. The value mode uses the international 24K gold spot price (XAU), refreshed automatically, which can differ from the SJC or PNJ quote inside Vietnam. Treat the value as a world-price reference and check the domestic price before you trade.