Old Gold Value Calculator
Estimate how much your old gold may be worth using its weight, purity and a reference gold rate. Add an optional deduction to model a specific exchange or buyer quote.
Loading reference gold rate
Preparing the old gold calculator…
1. Weight
Use the gold weight in grams. Non-gold stones or other materials should not be counted as gold weight.
2. Purity
Choose 24K, 22K, 20K, 18K or 14K so the reference 24K rate can be adjusted for the selected karat.
3. Deduction
Leave deduction at 0% for theoretical value, or enter a percentage to model a specific buyer or exchange quote.
How it works
From gold weight to estimated exchange value
The calculator first estimates the value of the gold content using the selected karat and the entered 24K rate. It then subtracts only the deduction percentage you choose.
Formula
Purity-adjusted rate = 24K rate × karat purity factor
Theoretical value = weight × purity-adjusted rate
Exchange estimate = theoretical value − deduction
Worked example
10g of 22K gold
This example uses a hypothetical rate and deduction only to explain the calculation. It is not a market or buyer quote.
Why an actual old gold quote can differ
A calculator can model weight, karat, rate and a deduction. It cannot physically test an ornament or know the exact terms a particular buyer will offer.
Physical purity
Actual purity may need to be established through an appropriate physical testing process.
Net gold weight
Stones, attachments and other non-gold material can affect the gold weight considered in a quote.
Buyer policy
Different jewellers, refiners or buyers may use different commercial terms and valuation processes.
Reference rate
A reference gold rate is not necessarily the same rate a particular buyer uses for an exchange transaction.
Gold Ledger does not prescribe a standard old-gold deduction. Use the deduction field only to test a known or hypothetical percentage. Compare actual offers and understand the buyer's valuation method before making a transaction.
Frequently asked questions
Old gold value FAQs
How is old gold value calculated?
Gold Ledger first estimates the theoretical gold value from the entered weight, purity and 24K reference rate. If you enter a deduction percentage, that amount is then subtracted to show an estimated exchange value.
Does Gold Ledger assume a standard deduction for old gold?
No. The calculator defaults to a 0% deduction. You can enter a deduction only when you want to model a specific buyer or exchange quote.
Why can a jeweller's old gold quote differ from this calculator?
An actual quote may depend on physical purity testing, net gold weight, stones or other non-gold material, buyer policies and transaction-specific terms. The calculator is an indicative mathematical estimate.
Does the calculator include the value of stones or diamonds?
No. The calculation models gold value from the gold weight and selected purity. Stones, diamonds and other non-gold materials should not be treated as gold weight.
Can I change the gold rate used in the calculation?
Yes. The calculator starts with Gold Ledger's current reference 24K rate when available, and you can override it to model another rate or a buyer quote.
What happens if I enter a 5% deduction?
The calculator subtracts 5% of the theoretical gold value. The remaining amount is shown as the estimated exchange value.
Is the estimated exchange value guaranteed?
No. It is an indicative estimate and not a guaranteed jeweller, refinery or buyer quote.
Which gold purities can I calculate?
The calculator supports 24K, 22K, 20K, 18K and 14K gold.
Continue calculating
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