Overview
Currency conversion needs a rate. Unlike meters to feet, today's EUR/USD is not a constant. This tool uses a rate source to estimate what an amount is worth in another currency.
Estimates are not a bank quote. Spreads, fees, and weekend markets move the number you actually pay. For invoices, lock a rate in your contract instead of refreshing a webpage.
If rates fail to load, the page cannot invent a number. That is better than a stale hardcoded rate pretending to be live.