Gold Price Calculator UK: Value Your Gold by Weight and Carat
Enter a weight in grams, pick the carat, and this calculator returns what Mozeris pays for that gold today. The arithmetic is the one we use at the counter: weight × the purity of the carat × our published rate per gram. A hallmark of 375 is 9KT, 585 is 14KT, 750 is 18KT, 916 is 22KT and 999 is 24KT, so the mark inside a ring or on a clasp tag tells you which row to use. Weigh mixed carats separately, and convert first if your scales read troy ounces: one troy ounce is 31.1035 g. Purity is confirmed before any offer.
Ready to sell your gold?
Send us photos or bring it in for a free valuation. Once it is received and checked, we pay the same day.
How It Works
From calculation to payment in 4 simple steps
Calculate
Use the calculator above to estimate your gold's value
Send Photos
WhatsApp or email clear photos for a quick quote
Visit or Post
Bring items in person or use our insured postal service
Get Paid
Accept our offer and receive same-day bank transfer
Prefer to Send Photos First?
Use the form below. Tell us what you have, share photos, and we'll reply with a professional valuation, no obligation.
Understanding Gold Prices in the UK
What Affects Gold Prices?
- Global economic conditions - Uncertainty often drives gold prices higher
- Currency fluctuations - The GBP/USD exchange rate impacts UK gold prices
- Central bank policies - Interest rate decisions affect gold's appeal
- Supply and demand - Mining output and jewellery demand influence prices
Spot price and what we pay
The manual field (and our live feed) use the gold spot price in GBP per troy ounce. The “we pay per gram” column is your scrap payout Our price per gram is set daily from the live market. There is no separate “scrap vs good condition” scrap rate.
- Designer or branded jewellery, may be worth more than scrap after expert valuation
- Gemstones, diamonds and coloured stones are assessed separately
- Purity, we confirm the carat when we see the piece; the calculator assumes the hallmark carat you select
UK Gold Hallmarks Explained
British gold jewellery is legally required to carry hallmarks if it weighs more than 1 gram. These marks tell you the purity and origin of your gold.
| Karat | Purity | UK Hallmark | Common Use |
|---|---|---|---|
| 24KT | 99.9% | 999 | Investment bars, coins |
| 22KT | 91.7% | 916 / 22ct | Asian jewellery, sovereigns |
| 18KT | 75.0% | 750 | Fine jewellery, luxury watches |
| 14KT | 58.5% | 585 | European jewellery |
| 9KT | 37.5% | 375 | Most UK high street jewellery |
Tip: Look for hallmarks inside rings, on clasp tags, or on the back of pendants. A jeweller's loupe or magnifying glass helps spot these tiny marks.
Ready to Get a Quote?
Submit your details and our gold experts will be in touch with a firm offer, same day, no pressure.
Frequently Asked Questions
Common questions about selling gold in the UK
Our calculator uses the same live gold data sources and refresh logic as our Sell Your Gold page. Our price per gram is set daily from the live market.
Spot is the wholesale benchmark for pure gold. Scrap jewellery is paid as a share of the gold content in each carat; we use the same fixed formula as our Sell Your Gold and scrap gold price pages (live spot × purity × our standard payout per gram) so you see one clear number, not a range.
No - we test all items to determine exact purity. If you're unsure, just send photos and we'll provide an estimate. The final offer is confirmed after in-person testing.
Items with diamonds, sapphires, or other precious stones are valued separately. We assess both the gold content and the gemstones, often paying significantly more than scrap value for quality pieces with desirable stones.
Visit Us In Person
Free valuations at our Mayfair and Braintree locations