Head to head

Frankfurter vs ExchangeRate-API

Both are free currency conversion APIs. Both were called live on 23 Oct 2026. Here is what actually differs — and which one you should pick.

⚡ Quick answer: Frankfurter. No key, no monthly cap to babysit, honest ECB data. ExchangeRate-API only makes sense if you need exotic pairs Frankfurter does not carry.

Frankfurter 👑

Free currency exchange rates, updated daily from the European Central Bank. No key ever.

Status✅ Live-verified 23 Oct 2026
Health scoreB · 84/100
Needs a key?No — call it now
Browser CORSYes
Response time1799 ms (our check)
ReliabilityLive in 2 of last 2 weekly checks (100%)
Free limitsFree, no key, no limits stated
CategoryFinance & Crypto
Full review & playground →
VS

ExchangeRate-API

Simple, reliable currency conversion rates with a painless free key.

Status🔑 Free key required
Health scoreC · 55/100
Needs a key?Yes, free signup
Browser CORSYes
Free limitsFree tier: 1,500 req/month
CategoryFinance & Crypto
Full review & playground →

⚖️ The verdict

Frankfurter. No key, no monthly cap to babysit, honest ECB data. ExchangeRate-API only makes sense if you need exotic pairs Frankfurter does not carry.

Done