Frankfurter API

Frankfurter is a free, open-source exchange rate API. The public API lives at https://api.frankfurter.dev — no API key, no signup, no monthly quota (only abuse-prevention rate limiting). It tracks daily reference rates from 84 central banks covering 201 currencies, with history back to 1948.

Use the v2 API (/v2/...) documented below. The older v1 API still works; see references/v1-api.md only if you must maintain existing v1 code.