Frequently Asked Questions

Does CashSum store my data?

No. The amounts you enter stay only in your browser — nothing is sent to or saved on our servers.

Does it work without an internet connection?

Once the page has fully loaded, yes — the calculator itself runs locally in your browser.

Do I need to create an account?

No. CashSum is completely free to use and doesn't require any sign-up.

Which currencies are supported?

More than a dozen, including the Euro, US Dollar, British Pound, Brazilian Real, Japanese Yen, and several others — with local-language versions available for a number of them.

Is the information about each currency accurate?

We do our best to keep denominations and historical facts up to date and correct, but double-check anything that matters against an official source.

Can I use CashSum on my phone?

Yes, the calculator works well on both desktop and mobile browsers.