LBMA fine-content range
350–430 troy ozMeasured weight and marked fineness
LBMA Good Delivery Gold Bar Value Calculator
Enter the bar's actual gross troy-ounce weight and marked fineness. This tool checks the LBMA minimum fineness and fine-gold-content range, then calculates theoretical value from the resulting fine ounces.
Spot per fine troy ounce
$4,186.98USD · per fine troy ounceData source Twelve Data quoteLast updated Oct 2, 2026, 5:30 AM UTCFX reference date 2026-10-02Status Latest validated provider value — timing follows the source
Minimum fineness
995.0‰Common description
About 400 oz; actual bars varySpecification and intent
A Good Delivery gold bar is not a fixed 400 ounces
LBMA describes a fine-gold content range of 350–430 troy ounces, minimum fineness 995.0, and a common weight near 400 ounces. The actual gross weight and assay vary by bar.
Interactive tool
Value a measured bar
Use the scale or bar-list gross weight and the stamped assay. A common 400 oz nominal value is not substituted for your measured input.
Use the measured or listed gross weight; do not assume a fixed 400 oz.
The LBMA minimum is 995.0‰.
Fine-gold content399.9600 troy ozDerived from your actual gross-weight and assay inputs.
Theoretical value · USD$1,674,626.02Current spot reference × calculated fine ounces.
Fine ounces = measured gross ounces × stamped fineness ÷ 1,000. LBMA's 350–430 fine-ounce range and minimum fineness are validation bounds, not a claim that your bar is certified. This calculator does not authenticate bars.
Calculation method
How the result is calculated
Fine troy ounces = gross troy ounces × fineness ÷ 1,000. Theoretical value = fine troy ounces × current Gold spot per troy ounce.
This is a calculator, not an LBMA certification or assay. Use verified bar marks and qualified weighing/assay records; the page cannot authenticate a refiner, serial number, or physical bar.
Evidence and references
Specification sources
Primary references where available
Information only, not investment advice. Theoretical metal value is not a dealer offer, retail price, jewelry appraisal, assay, or guaranteed sale price.