Gold Calculator Australia
Work out what your gold is worth in Australian dollars at the live spot price, in 9ct, 18ct, 22ct or 24ct, per gram or troy ounce. Build a list of pieces and check a cash-for-gold offer against the total.
Live gold price
/ troy ounce
Your list
Nothing added yet. Fill in a weight above and press Add to list to build up a total across several pieces.
How to use this calculator
- 1Check the live price at the top, and switch the currency if you need a different one.
- 2Weigh your item on a scale accurate to at least 0.1 g, then enter the weight and pick the matching unit.
- 3Select the purity. Most jewellery is hallmarked, so look for 375, 585, 750, 916 or 999, which map to 9K, 14K, 18K, 22K and 24K.
- 4Add each piece to the list to build a running total, then use the percentage box to check an offer against it.
How it works
Every calculation reduces to one line. Your weight is converted to grams, multiplied by the purity's fineness to get the pure gold content, then multiplied by the spot price per gram:
value = grams × fineness × (spot price per troy ounce ÷ 31.1034768)
The divisor is the exact number of grams in a troy ounce, the unit gold is quoted in worldwide. The spot price on this page refreshes automatically once a minute, and when it does, every row in your list and the total re-price themselves, so you never have to re-enter anything.
Spot is the price for immediate delivery of pure, wholesale-quantity gold. It is a benchmark, not a retail price: coins and bars sell above it and scrap is bought below it.
Frequently Asked Questions
What does karat actually mean?
Karat measures how much of an alloy is pure gold, out of 24 parts. 24K is essentially pure, 18K is 18 parts gold to 6 parts other metal (75%), 14K is 58.3%, and so on. The calculator multiplies your weight by that fraction, because only the gold content carries the spot price.
Why is a troy ounce different from a normal ounce?
Precious metals are traded in troy ounces, which are 31.1035 grams. The everyday (avoirdupois) ounce used for food is 28.3495 grams, about 10% lighter. Spot prices are always quoted per troy ounce, so mixing the two up overstates or understates value noticeably. Both units are in the dropdown.
Why would a dealer pay me less than this figure?
This is melt value: what the gold content is worth at spot. A buyer has to refine the metal, carry the price risk and make a margin, so offers usually land somewhere between 70% and 95% of melt depending on quantity and karat. That gap is exactly what the percentage tool below the list is for.
What is the percentage calculator for?
Enter the percentage a buyer has quoted (90%, 85%, whatever it is) and it shows the cash figure. By default it works from the total of your list, but you can pick a single item from the dropdown to check one piece on its own.
Do you store what I enter?
No. There is no account and nothing is sent to a server. Your list is kept in your own browser's local storage so it survives a page refresh and switching currency, and clearing it removes it for good.
Carats, ct and scrap gold in Australia
Australian jewellery is stamped in ct rather than K, but it means the same thing: 9ctis the 9K option in the purity dropdown, 18ct is 18K, and so on. The two you will see most often here are 9ct (stamped 375) and 18ct(stamped 750). Older British and European pieces that ended up in Australian jewellery boxes may be marked 375, 585 or 750 with no letters at all.
A full drawer of 9ct is usually worth less than people expect, because 9ct is only 37.5% gold, and the rest is copper and silver that a refiner pays nothing for. Weigh each piece and add it to the list separately if the karats differ; mixing a 9ct chain in with an 18ct ring and pricing the lot at one purity is the most common way to end up with a wrong number.
Cash-for-gold shops, pawnbrokers and scrap buyers work from this melt figure and pay a percentage of it, commonly 70% to 90%, with the better rates on larger, higher-karat lots. Put the percentage you have been quoted into the box above the list to see it in dollars before you agree to anything. Bullion runs the other way: Perth Mint bars and Kangaroo coins sell above spot, since the premium covers minting and distribution.
Gold trades internationally in US dollars, so the Australian dollar price on this page is the world spot price converted at the current AUD/USD rate. It can move on a quiet day in the gold market purely because the Australian dollar moved, which is worth remembering if you are timing a sale.
Disclaimer. Figures produced by this tool are indicative and for information only. They are not a valuation, an offer to buy or sell, or financial advice. Always confirm weight and purity with a professional before acting on a number.
This calculator in other currencies: US dollars · euros · Indian rupees