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London & New York Bullion & Structural Lab

LBMA Good Delivery 400-oz bars, COMEX futures contracts, numismatic coin grading formulas, and AISC / Eurocode structural engineering.

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🇬🇧 LBMA 400-oz & COMEX 100-oz Contract Bullion Calculator
Live Interactive Simulator
Fine Metal Mass
12,379 g
12.38 kg pure gold
Contract USD Value
$1,090,520
COMEX / LBMA Settlement
British Pounds (GBP)
£842,100
London Clearing Value
Physical Specification
398.0 Fine Oz
Assay: 995.0 / 1,000
⚡ Flagship Tools for London & New York (LBMA & COMEX)
🪙 LBMA Gold
LBMA 400-oz & COMEX Gold Bar Lab
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🏗️ AISC Steel
AISC W-Shape Steel Beam Deflection Lab
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🪙 Numismatics
Numismatic Coin Fineness & Weight Lab
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📊 Datasets
Open Scientific & Engineering Datasets
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📋 Regional Regulatory & Technical Benchmark Matrix
Currencies USD ($) & GBP (£) / Global Clearing Standards
Primary Bullion Units Fine Troy Ounces (oz t), 400-oz Bar, 100-oz Bar
Market Benchmarks LBMA Gold Price AM/PM & CME COMEX Futures
Engineering Standards AISC 360-16 (US) & Eurocode 3 (UK Annex)
❓ Frequently Asked Questions
What are the physical specifications of an LBMA Good Delivery gold bar?
A Good Delivery bar must weigh between 350 and 430 fine troy ounces (approx. 10.9 to 13.4 kg) with a minimum fineness of 995.0 parts per thousand (99.5%), stamped with refiner seal and serial number.
What is the contract size of a COMEX Gold Futures (GC) contract?
One standard COMEX Gold Futures contract represents 100 fine troy ounces of gold, deliverable in either one 100-oz bar or three 1-kilogram bars with minimum 99.5% purity.