DocomintCurrency Converter
Convert between 20 major currencies using live, daily-updated exchange rates.
The one calculator in this catalog that isn't purely offline — everything else here runs entirely on formulas, but a currency conversion is only as good as its exchange rate, which changes daily. This fetches a live mid-market rate at the moment you convert, rather than a stale hardcoded table.
Example: Converting $100 USD to EUR at a live rate of roughly 0.92 returns about €92 — the mid-market rate shown here is typically a bit better than what a bank or card network actually applies, since those add their own markup on top.
How it works
- Enter an amount and choose the currencies to convert from and to
- Press Convert
- The converted amount and current exchange rate are fetched live and shown instantly
Frequently asked questions
Where do the exchange rates come from?
A free, publicly available exchange rate API (open.er-api.com), updated roughly once per day. Rates are fetched live at the moment you convert, not cached indefinitely.
Is this the rate I'll actually get at a bank or when using my card abroad?
No — this shows the mid-market rate (the rate banks trade at among themselves), which is usually better than what you'll get from a bank, card network, or currency exchange counter, since those add their own markup or fee on top.
Is my numbers uploaded anywhere?
No — Currency Converter runs entirely in your browser using JavaScript/WebAssembly. Your numbers is never sent to a server.