Editorial policy

These are the rules we follow when we publish a calculator or an answer.

• What we publish. Calculators and short answers about US coins and bills. Every page shows the byline Coins Per Roll Editorial Team, a published date and an updated date. The updated date changes only when the content really changes.
• Sources. We use official sources: the U.S. Mint, the Bureau of Engraving and Printing. The source and the date we checked it are shown under every result. All pages we used are listed on Our sources.
• No invented numbers. A number appears only if an official page states it or if we calculate it from official figures and show the calculation. If there is no official figure, the page says so.
• No false credentials. We do not say a page is reviewed by an expert or fact-checked unless a named person did it.
• Advertising. The site may show advertising. Advertisers do not influence what we write.
• Updates and corrections. When an official page changes, or a reader or we find an error, we fix the page. See Corrections.
• Not financial advice. See the Disclaimer.