Home/Currency Converter
Written by Jere Salmisto·Reviewed by CalcFi Editorial·Last verified: 2026-05-13
TL;DR: Free converter for 30+ currencies using mid-market rates from the European Central Bank (via Frankfurter), refreshed hourly. The number you see is the inter-bank rate — banks typically add a 1-3% spread, airport kiosks 5-10%. For tax filings, use the Treasury Reporting Rate of Exchange instead. Source: ECB / Frankfurter; last verified 2026-05-13.
Live FX

Currency converter with live rates.

30+ currencies, mid-market rates refreshed hourly from the European Central Bank via Frankfurter. Instant, free, no signup.

USD to EUR1.16%· FRED · Updated May 22, 2026Updated May 28, 2026

1 USD = 0.8593 EUR

Rates updated: 5/27/2026

0.86
€ EUR
1.00 $ USD
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How exchange rates work

Exchange rates reflect the value of one currency versus another in the global forex market — the largest financial market in the world, trillions traded daily. Rates move on supply and demand, with central bank policy and economic data as the biggest levers.

The rate you see here is the mid-market rate — the midpoint between bid and ask. When you actually exchange at a bank or airport, you'll get a rate 1–3% worse thanks to their spread. For large transfers, services like Wise typically offer near-mid-market rates with a transparent fee.

Frequently asked
What is an exchange rate?↓

An exchange rate is the price of one currency in terms of another, set by supply and demand in global forex markets. If USD/EUR is 0.92, one US dollar buys 0.92 euros.

Why do exchange rates change?↓

Interest rates, inflation, growth, geopolitics, and market sentiment move rates. Central bank decisions and major data releases cause the biggest daily moves.

How accurate are these rates?↓

Rates refresh hourly and represent mid-market rates. Banks typically add a 1–3% spread on consumer exchanges, so the rate you receive at the counter will be slightly worse.

Spot rate vs. forward rate?↓

The spot rate is today's rate for immediate transactions. A forward rate is a fixed future rate set today — businesses use forwards to lock in cost of planned international payments.

How do I get the best exchange rate?↓

Compare providers, reference the mid-market rate here, and avoid dynamic currency conversion at ATMs. For large transfers, services like Wise and Revolut usually beat retail banks.

Most traded pairs?↓

USD/EUR, USD/JPY, and GBP/USD are the "majors" — tightest spreads, highest liquidity. Emerging market currencies carry wider spreads and higher volatility.

Where does CalcFi source exchange rates?↓

Frankfurter — a free, open-source API that mirrors the European Central Bank reference rates. The ECB publishes daily reference rates at ~16:00 CET, so values on this page refresh hourly to track the latest publication.

Why do banks give worse rates?↓

Banks build a spread into the rate to cover currency-risk inventory and earn margin. Typical retail spreads are 1-3% over mid-market; airport and tourist kiosks routinely charge 5-10%. The mid-market rate here is the wholesale price banks pay each other.

Can I use this for tax reporting?↓

Use it only as a reference. The IRS accepts year-end or transaction-date rates from a consistent published source. For year-end conversion of foreign-held assets, the Treasury Reporting Rate of Exchange is the most defensible source.

What is dynamic currency conversion (DCC)?↓

DCC is when an ATM or merchant abroad offers to charge you in your home currency instead of the local one. Always decline. The conversion rate baked into DCC is typically 5-10% worse than your card network would give you natively.

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