Convert between currencies using the European Central Bank's daily euro reference rates.
More tools · by niek.li
A quick, no-frills currency converter. Enter an amount, pick two currencies, and it converts using official reference rates. The arrow swaps the two currencies.
Data. Rates are the European Central Bank's euro reference rates, from the open-source Frankfurter API. This site fetches the day's rates through its own server once and caches them, so your browser only ever talks to niek.li — not a third party. The ECB publishes them once per working day, around 16:00 CET; on weekends and TARGET holidays the most recent values are shown. These are mid-market reference rates — the neutral midpoint of the market and a good benchmark. A bank, card or exchange will give you a slightly worse rate, and that gap is their margin, so treat this as the baseline to compare against rather than the exact amount you'll pay.
Privacy. Conversions happen entirely on your device, and the day's rates are cached locally so the tool keeps working offline. Nothing is stored on a server, and there are no accounts, tracking, or ads. See the full privacy page for what every tool sends and where.