Gold calculator: value, zakat, scrap and jewellery
Gold calculator
Weight × unit × karat. The answer below is already worked out for an example; change any field to recalculate.
Units of weight
Metal value of one unit, by karat, in rand.
| Unit | 24k |
|---|---|
| gram1 g | 2,091.37 |
| Krugerrand 1 oz33.93 g | 70,960.23 |
| kilogram1000 g | 2,091,371.39 |
| troy ounce31.1035 g | 65,048.97 |
The gold calculator turns a weight you enter into the metal value behind it. Choose the unit your scale shows, then pick the karat that matches the stamp on the piece. The karat tells the calculator how much fine gold the item actually holds, so the same weight in a different karat gives a different result.
What each mode answers
- Value answers the simplest question: what is the gold in this piece worth at the current world price?
- Zakat answers whether your holdings reach the legal threshold and what a small share of them comes to.
- Scrap answers what a refiner or scrap buyer would treat as recoverable metal, which is not the same as the finished piece.
- Jewellery answers what the metal content of a finished item represents once making and design are set aside.
Why an offer comes in lower
A buyer's offer is always below the figure on the page. The gap covers refining losses, assay, handling, the buyer's margin and the risk of holding stock. That is normal trade practice, not a sign of a bad calculator.
Prices shown here are metal value calculated from the world price. They are not a shop quote, not an offer, and not a valuation of a specific piece. Use the result as a reference point before you talk to anyone.
How we calculate
We do not collect dealers’ prices. Every figure is worked out from the world price, the same way, on every page.
world price per troy ounce÷grams in an ounce×dollar rate×purity×grams in the unit
- World priceSpot gold in US dollars from an aggregated feed 1, recalculated every 10 minutes while the market is open.
- RateThe ZAR rate from central-bank reference data 2. It is a market reference rate, not an official fixing of your central bank.
- Purity and weightFixed constants with their source: see the unit pages. 22k counts as 916 parts gold in 1000.
- WeekendsNo trading, no recalculation: the last price before the close stays, marked “market closed”.
- HistoryThe history and the chart use one series only: daily reference fixings, converted at the rate of the same day. We never join them to the live figure.
Why a jeweller’s price is different
Shops add a making charge and their margin, and buy back for less than they sell. Our figure is the metal alone: the floor of a fair price, not the shop price.
Sources
Every figure on this site points here by its number.
- 1Price feedWorld spot price of gold and silver, aggregated feedthe world price, every 10 minutes while the market is open
- 2Central banksFrankfurter — central-bank reference ratesUSD → ZAR, updated daily; also the daily history
- 3StandardUnits of weight and finenessgrams in an ounce and in a gram