About coinmeltchart.com
What this site is, how the numbers are worked out, and where the weights come from.
Updated
What the site is
coinmeltchart.com is a set of calculators and reference tables for the metal value of US coins: silver coins, junk silver bags counted by face value, and pre-1982 copper pennies. You enter the coins you have and a metal price, and the page shows the weight of metal and its value at that price. The home page calculator is the main tool.
It is maths only. The site does not buy or sell coins, does not take offers, and does not tell you whether to sell. Melt value is a reference point. Collector value can be higher, and a buyer usually pays less than melt.
How the numbers are worked out
Every figure is silver or copper content multiplied by a price. Weights and silver content are fixed constants listed on each page. The price is the number you type, because this site has no live price feed at present, and it never shows a price as live unless a feed is connected and its source and time are shown. Values are added up exactly and rounded to the cent once, at the end. The method is explained step by step in how to calculate silver melt value.
Data sources and credits
Silver weights and content per coin come from published melt tables and were cross-checked between two of them:
- NGC, Coin Melt Values.
- MetalCharts, Silver Coin Melt Values.
- Copper cent weight and copper share: APMEX, Money Metals Exchange and FindBullionPrices (links on the copper penny page).
The site does not use a downloaded dataset. The weight tables are typed from the sources above and checked by an automated test suite that recomputes each figure.
Corrections
If a weight, a year or a figure looks wrong, please tell us. See Contact. Related pages: Privacy Policy and Terms of Use.