Exchangerate.dev vs Fixer
Same instrument, two spec sheets — measured, not claimed.
Exchangerate.dev vs Fixer: common questions
Which is more reliable, Exchangerate.dev or Fixer?
On our scheduled checks, Fixer leads on measured uptime — Exchangerate.dev at 71.6% versus Fixer at 99.02% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.
Which is faster, Exchangerate.dev or Fixer?
Exchangerate.dev has the lower median latency in our checks — Exchangerate.dev responds in 336 ms versus Fixer at 481 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 Exchangerate.dev and Fixer need an API key?
Exchangerate.dev needs no key, while Fixer requires a free API key. If you want to start calling without signup, reach for Exchangerate.dev first.
Can I call Exchangerate.dev and Fixer from the browser?
Yes — both Exchangerate.dev and Fixer 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 Exchangerate.dev and Fixer free for commercial use?
Exchangerate.dev has unclear commercial terms, and Fixer 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.