Frankfurter
Open sourceFree, open-source exchange rates API sourced from European Central Bank data.
Visit website frankfurter.dev
Overview
Frankfurter is a free, open-source exchange rates API built on European Central Bank reference rates. It requires no API key and applies no rate limit on the public instance.
Endpoints cover the latest rates, a specific historical date, and time series. The service can be self-hosted. ECB reference rates publish once per working day, and are intended for display, conversion, and reporting rather than for settling trades.
Common use cases
- Convert between currencies using ECB reference rates
- Fetch a historical rate for a given date
- Chart an exchange rate time series
- Self-host a rates endpoint with no API key
Key features
- Free exchange rates with no API key required
- Sourced from European Central Bank reference rates
- Historical and time-series endpoints
- Fully open source and self-hostable
- No rate limits on the public instance
- Simple, stable endpoint contract
Sources and evidence
FintechToolkit records the source behind core directory claims. This profile’s sources were last captured on . Validate time-sensitive commercial, regulatory, and availability details directly with the provider.
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