Exchange Rates APIFree REST Service
Foreign currency exchange rates and reliable conversion endpoints
Developer Workbench & Live ConsoleKey Required
Test real endpoints directly, inspect live JSON, or copy implementation code.
An external API key is required to authenticate requests with Exchange Rates API. Allowance: 250 req/month.
ISO 13616 IBAN & BIC/SWIFT Validator
Validate international bank account numbers (IBAN) across 70+ countries with MOD 97-10 math and SWIFT/BIC parsing.
Test and interact with this service in your browser using our ISO 13616 IBAN & BIC/SWIFT Validator tool.
Frequently Asked Questions (FAQ)
Technical and integration answers for Exchange Rates API.
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Exchange Rates API Limitations & Free Alternatives
Capped at just 250 requests/month (~8 calls/day), locked base currency (EUR only), and restricted historical conversion endpoints.
Frankfurter, ExchangeIt, and FreeAPI ECB Converter deliver unlimited live and historical forex rates with zero API keys.
Official European Central Bank rates, unrestricted base currency (USD, TRY, EUR), and historical series.
Keyless real-time and historical conversion across 350+ fiat and crypto currencies since 1996.
Sub-15ms edge cross-rate currency converter powered by official ECB reference feeds.
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