Frankfurter API: Free Exchange Rates from the European Central Bank

Need currency exchange rates? Frankfurter API provides ECB data — free, no key, 30+ currencies.

Endpoints

Latest rates:

https://api.frankfurter.app/latest?from=USD&to=EUR,GBP,JPY

Historical:

https://api.frankfurter.app/2025-01-01?from=USD

Time series:

https://api.frankfurter.app/2025-01-01..2025-12-31?from=USD&to=EUR

Response

{"base":"USD","date":"2026-03-17","rates":{"EUR":0.867,"GBP":0.750,"JPY":158.95}}

Why Frankfurter?

• Free — no limits, no key
• ECB source — official European Central Bank data
• 30+ currencies supported
• Historical data back to 1999
• Time series for trend analysis

I built an Exchange Rate Scraper on Apify — search knotless_cadence exchange-rate.