FreeForexAPI

Real-time foreign exchange rates for major currency pairs

Official docs outline

Extra Credit builds an outline of FreeForexAPI's docs the first time your work uses it. Until then, start at the official documentation.

ExchangeRate-API Free currency conversion
Exchangerate.dev Live & historical FX, 168 pairs back to 1999, Frankfurter-compatible, free 10k/mo
Exchangerate.host Foreign exchange & crypto rates API (keyless access ended 2023)
Exchangeratesapi.io Exchange rates with currency conversion
Fixer Exchange rates and currency conversion
Frankfurter Exchange rates, currency conversion and time series
Fulusly Exchange rates for 144 currencies with daily history back to the 1990s, English and Arabic
FXpeek Source-linked historical reference exchange rates with CSV, JSON and an MCP server
National Bank of Poland A collection of currency exchange rates (data in XML and JSON)
Nerkhsanj Iran free-market USD, EUR, CNY, gold and coin rates in toman, live and daily archive since 2010
paralelo.bo Bolivia parallel-market USD/BOB exchange rate, aggregated from P2P sources every 60s
Rate-API Hourly exchange rates for 160+ currencies in JSON, XML or CSV with free plan 2,500 requests/month