The Rates API

Free exchange rates API. No key, no limits.

Current and historical reference rates from the European Central Bank for 30 currencies, every working day since 1999.

Read the docs View on GitHub
GET https://theratesapi.com/api/latest?symbols=USD,GBP,JPY 
{
  "date": "2026-10-16",
  "base": "EUR",
  "rates": {
    "GBP": 0.84385,
    "JPY": 177.82,
    "USD": 1.1253
  }
}

Two endpoints. That's the whole API.

GET /api/latest

The newest rates the ECB has published.

GET /api/2025-06-02

Rates for any day since 1999. Weekends and holidays return the previous working day.

Add ?base=USD to change the base and ?symbols=GBP,JPY to filter. Read the full reference.

GET https://theratesapi.com/api/latest?base=USD&symbols=EUR
curl "https://theratesapi.com/api/latest?base=USD&symbols=EUR"
const res = await fetch('https://theratesapi.com/api/latest?base=USD&symbols=EUR')
const data = await res.json()
import requests

data = requests.get('https://theratesapi.com/api/latest?base=USD&symbols=EUR').json()