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Exchange Rates API vs IBAN Validation API

Same instrument, two spec sheets — measured, not claimed.

APIExchange Rates APIHEALTHY88IBAN Validation APIHEALTHY90
Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms810861
P95 · ms41622151
Authnonenone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Exchange Rates API vs IBAN Validation API: common questions

Which is more reliable, Exchange Rates API or IBAN Validation API?

Both are neck-and-neck — Exchange Rates API and IBAN Validation API each measure 100% uptime over 90 days on our probe schedule. Reliability here is verified from our own scheduled checks; use the 30-day bars above to see which has been steadier lately.

Which is faster, Exchange Rates API or IBAN Validation API?

Exchange Rates API has the lower median latency in our checks — Exchange Rates API responds in 810 ms versus IBAN Validation API at 861 ms (P50). Tail latency (P95) is in the table above; for most workloads the median is the number that shapes how the API feels.

Do Exchange Rates API and IBAN Validation API need an API key?

Neither needs a paid key — Exchange Rates API is callable with no signup, and IBAN Validation API is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Exchange Rates API and IBAN Validation API from the browser?

Yes — both Exchange Rates API and IBAN Validation API send CORS headers over HTTPS, so front-end code can fetch either directly with no backend proxy. That makes them easy to swap in a client-side app while you compare responses.

Are Exchange Rates API and IBAN Validation API free for commercial use?

Exchange Rates API has unclear commercial terms, and IBAN Validation API has unclear commercial terms. We track service terms and the data license as separate fields — see the Commercial use and Data license rows above, and confirm both before shipping either in a paid product.