
Exchangerate.dev
ExchangeRate-API
Currencylayer
Fixer.io
BestExchangeRates
Exchangeratesapi.io
Freecurrencyapi.com
Open Exchange Rates
Currencyapi.com
Fixer.io
Exchangeratesapi.io
ExchangeRate-API
Freecurrencyapi.com
Currencylayer
BestExchangeRates
Open Exchange Rates
exchangerate.dev is a free foreign-exchange rates API built for developers who need reliable rates without signup friction. The free tier includes 10,000 calls/month with no credit card required, live rates for major currency pairs updating roughly every 60 seconds on trading days, and daily ECB/FRED reference rates for the remaining pairs. Full history goes back to 1999 across all 465 supported pairs.
Every plan, including free, gets the same data freshness. Paid tiers add throughput and commercial-use licensing: Basic is $10/mo for 100,000 calls/month, Pro is $30/mo for up to 1,000,000 calls/month. It also includes an MCP server and llms.txt for AI-agent integration, a batch /convert endpoint, and a /range endpoint for historical queries.
Every response is source-labeled, so you always know whether a given rate is live or daily-reference.
Exchangerate.dev
Currencyapi.comExchangeRate-API - An easy to use, free & reliable Exchange Rate API trusted by tens of thousands of developers since 2010!
Fixer.io - Fixer provides a free, simple, and lightweight API for current and historical foreign exchange rates and currency conversion. The API tracks rates published daily by the European Central Bank.
Currencylayer - Free and startup-friendly currency converter JSON API for real-time and historical exchange rates - reliable and accurate, supporting 168 world currencies.
Exchangeratesapi.io - Simple API for Global Currency Exchange Rates
BestExchangeRates - Compare FX and save when you send or spend abroad
Freecurrencyapi.com - Freecurrencyapi.com is a free, reliable & feature-complete currency exchange rates API. 32 world currencies & daily update rates.