What it does
A simple catalogue for a coin collection, or any other collection: banknotes, bullion, medals, stamps, cards or anything else you keep. For each item you can record the country, the year as it is written, the metal, weight and size, the grade, your own reference number, how many you have, what you paid, what you think it is worth now and where it is kept.
It adds up what you paid and your own values, and works out the metal (melt) value of every gold, silver or platinum item at today’s spot price. Nothing leaves your browser. Check a coin’s weight and size against the official figures with coin check, grade it with grade scale, and look for special serial numbers on your notes with serial checker.
How to use it
- Fill in the form and press Add to collection. Only the name is needed; leave anything else empty.
- Choose the Metal for coins and bars, and type the Weight, so the melt value can be worked out.
- Click a column heading to sort, or type in the search box to find an item.
- Press Edit to change an item, or ✕ to delete it.
- Tick Keep my collection on this device so the list is here next time, and press Export now and then to save a copy you control.
What each setting does
- Keep my collection on this device: saves the list in this browser only. Untick it to delete the saved copy.
- Export and Import: save the whole list as a .json file, and load it again on this or another device. Import adds items; it doesn’t replace what’s there.
- Download CSV: a spreadsheet of the list for Excel or Google Sheets.
- Print list: prints the totals and the items table, for an insurer or a family record.
- Currency and metal prices: the currency for all amounts, and today’s spot prices. Type your own price there if you prefer.
Worked example
Press Fill in an example. The list gets a 1921 Morgan dollar, three 1919 Indian silver rupees, a 1911 sovereign and a 10 rupee note with a solid serial. Paid in total: 40 + 30 + 600 + 5 = 675. Your values: 45 + 36 + 650 + 15 = 746, so the list is up 71. The melt value line adds up the silver and gold in the three coins at today’s prices.
FAQs
Is my collection uploaded anywhere? No. There are no accounts and no servers involved. The list lives in this page, and in this browser’s storage only if you tick the box. Clearing your browser data deletes it, so export a copy.
Where do I find a value for my coin? This tool doesn’t give collector prices. Price guides are copyrighted, and prices change. Type your own value from a recent sale, a dealer or a club, and the date you checked.
Can I use it for stamps or cards? Yes. Choose the type and leave the metal empty.
Where the numbers come from
- Melt values use the same daily spot prices as the Melt value tool (github.com/fawazahmed0/exchange-api, CC0). Alloy names and finenesses are general facts.
- No catalogue numbers or prices are included: references and values are the ones you type.
Standard scientific values, such as constants, atomic weights and melting points, are facts found in every textbook; we name where ours were checked. If you are an author or publisher and want a value, a credit or a table changed or removed, tell us and we will act quickly.
Last updated 2026-11-10.