Convert any amount between 33 fiat currencies (live European Central Bank rates) AND major cryptocurrencies (BTC, ETH, USDC, SOL, ICP, CELO and more, live Coinbase spot rates) — fiat↔fiat, crypto↔fiat, and crypto↔crypto all work. Returns converted amount, exchange rate, inverse rate, rate date, and the rate source so agents can price, invoice, and compare across fiat and crypto without a paid forex/crypto API. Historical dates apply to fiat pairs only.