Fixer.io API
ECB-sourced real-time forex rates for 170+ currencies
Freemium
✓ Verified
🇪🇺 European
Fixer.io sources exchange rate data from the European Central Bank and financial institutions, providing real-time forex data for 170+ world currencies with updates every 60 seconds on paid plans. The free tier is limited (EUR base currency, 100 requests/month) but sufficient for testing. Popular for European businesses needing ECB-sourced rates for accounting and invoicing compliance. Part of the APILayer family alongside Currencylayer. Paid plans start at €9.99/month for 10,000 monthly requests.
API Details
Auth Method
API Key
Pricing Model
Freemium
Free Tier
Yes — 100 requests/month, EUR base only
Rate Limit
Plan-based
Format
REST / JSON
Versioning
v1
SLA / Uptime
99.9%
Compliance
GDPR
Geographic Restrictions
Global (170+ currencies)
Last Verified
2026-02-20
Categories
Frequently Asked Questions
Fixer.io has a free tier with EUR-based rates (no other base currencies), 1,000 requests per month, hourly updates, and no HTTPS on the free plan. Paid plans start at u20ac9.99/month for any base currency and HTTPS access. For production applications, the Basic plan or above is typically needed.
Fixer.io covers 170 world currencies including all major and most minor currencies. Data is sourced from the European Central Bank (ECB) for European currencies and various financial institutions for others. ECB-sourced rates are highly reliable for EUR-based applications.
The free plan updates hourly. The Basic plan ($9.99/month) updates every 60 minutes. The Professional plan updates every 10 minutes. The Enterprise plan offers real-time updates (1-minute frequency). For most commercial applications, hourly updates are entirely sufficient.
Yes u2014 this is a common use case. Use the /convert endpoint to convert amounts between currencies using current rates, or use the /historical endpoint to convert using rates on a specific date (important for accounting accuracy). Fixer.io is popular for SaaS billing, invoice generation, and e-commerce currency display.