Gold Price Calculator for Sri Lanka - Pavan, Grams, Karat, Making Charge and Wastage
Type the weight of a piece of gold jewellery in pavan or grams, its karat, the price your jeweller quotes, and the making charge and wastage.
Maintained by Hirantha Sandaruwan Lakshan. Rules checked 26 October 2026 against Wikipedia, Carat (purity): karat as parts fine per 24, and 22 karat as millesimal 916 and one more source.
About this tool
The tool gives the value of the gold, the extra charges and the final price, and shows how much pure gold is in the piece. It also converts between pavan and grams. It has no gold rate of its own: you type today's price, so the answer is only as current as the rate you use.
How it works
First the weight is turned into grams. A pavan (also called a sovereign in Sri Lanka) is a jewellers' trade unit, and the tool starts with 8 g for one pavan. You can change that box if your jeweller uses another figure. So 2.5 pavan is 2.5 x 8 = 20 g.
Next comes the price of one gram. If your rate is per pavan, it is divided by the grams in a pavan. Rates are usually quoted for one karat, often 22 karat or 24 karat, so the tool scales the rate by the karat of your piece: karat is the number of parts of pure gold out of 24, so 18 karat is 18/24 gold and costs 18/22 of the 22 karat price. Gold value is the grams multiplied by that price per gram.
Making charge and wastage are added on top. You choose how each is worked out: a percentage of the gold value, a rupee amount for each gram of the piece, or one fixed amount. Shops differ in how they charge, so the tool does not assume any rate. Each part is rounded to the cent and the final price is the gold value plus the making charge plus the wastage.
The pure gold figure is the weight of the piece multiplied by karat/24. This is a share by mass, so it ignores stones, enamel or solder. The tool does not add tax or VAT, hallmarking fees or discounts, and a jeweller may round differently. Treat the result as an estimate to compare with a shop's quote. Nothing you type leaves your browser.
Worked examples
One pavan of 22 karat with making 10% and wastage 5%
Rate Rs. 350,000 per pavan for 22 karat (an example figure, not today's rate). Gold value is Rs. 350,000. Making is 10% = Rs. 35,000 and wastage is 5% = Rs. 17,500. Final price: 350,000 + 35,000 + 17,500 = Rs. 402,500.
4 g of 22 karat from a 24 karat rate
A 24 karat rate of Rs. 400,000 per pavan is Rs. 50,000 per gram. For 22 karat that is 50,000 x 22/24 = Rs. 45,833.33 per gram, so 4 g has a gold value of Rs. 183,333.33. With making at Rs. 1,500 per gram (Rs. 6,000), the final price is Rs. 189,333.33.
10 g of 18 karat from a 22 karat rate
A 22 karat rate of Rs. 44,000 per gram gives 10 x 44,000 x 18/22 = Rs. 360,000 for the gold. The piece holds 10 x 18/24 = 7.5 g of pure gold.
Karat and pure gold share by mass
| Karat | Parts of gold in 24 | Gold share |
|---|---|---|
| 24 | 24 | 100% (pure) |
| 22 | 22 | 91.67% |
| 21 | 21 | 87.5% |
| 18 | 18 | 75% |
| 14 | 14 | 58.33% |
| 9 | 9 | 37.5% |
Frequently asked questions
How many grams are in one pavan?
The usual trade figure is 8 grams. It is a jewellers' convention, not an official unit of measurement, so the tool lets you change it. 2 pavan is 16 g and half a pavan is 4 g.
Is a sovereign the same as a pavan?
In Sri Lankan gold trade the two words are used for the same 8 g weight, and the tool treats them as one option. It is not about the gold coin of the same name, and the tool does not convert coins.
How is the price of gold jewellery worked out?
Multiply the weight in grams by the price per gram for its karat, then add the making charge and wastage. For 8 g at Rs. 43,750 per gram that is Rs. 350,000 before any extra charges.
What is a making charge and what is wastage?
The making charge pays for the work of producing the piece. Wastage allows for gold lost while making it. Both vary between shops and designs, so you type the figure your jeweller gives. The tool offers percentage, per gram and fixed amount.
How do I price an 18 karat piece from a 22 karat rate?
Multiply the 22 karat price by 18/22. If 22 karat is Rs. 44,000 per gram, 18 karat is 44,000 x 18/22 = Rs. 36,000 per gram. Pick the karat of the rate in the box that says which karat the price is for.
Why is the final price different from the shop's bill?
Shops may add tax, stone weight, certificate fees, or round in their own way, and their rate may change during the day. The tool leaves those out. Use it to check a quote, and confirm the rate and charges with the jeweller.
Does this tool give today's gold rate?
No. It has no live prices and sends nothing over the internet. The starting rate is only an example, so type the rate from your jeweller or a current price report.
Sources & references
Updated Oct 26, 2026