Exchange rate API integration guides

Quick start: your first request in two minutes

1. Get an API key. Create a free account and copy the key from your dashboard.

2. Make a request. Every endpoint is a GET request to https://api.fxapi.com/v1/ with the key in the apikey header:

curl -G "https://api.fxapi.com/v1/latest" \
  -d base_currency=EUR \
  -d currencies=USD,GBP,JPY \
  -H "apikey: $FXAPI_KEY"

3. Read the response.

{
  "meta": { "last_updated_at": "2026-10-08T09:31:00Z" },
  "data": {
    "USD": { "code": "USD", "value": 1.0924 },
    "GBP": { "code": "GBP", "value": 0.8348 },
    "JPY": { "code": "JPY", "value": 163.41 }
  }
}

Values are illustrative. meta.last_updated_at is the UTC timestamp of the data. data is keyed by currency code, and each value is the amount of that currency for one unit of the base currency – here, one euro. Leave out currencies to receive all 190+ currencies in a single call, and set base_currency to any supported code. The same request works from any language – Python, Node.js, PHP, Go, Ruby, C#, Java or Rust – and from Google Sheets or Excel, as the guides on this page show.

4. Go further. Add date=YYYY-MM-DD to /v1/historical for any day back to 1999, use /v1/convert for converted amounts, or /v1/average for monthly averages. Errors use standard status codes – 401 invalid key, 403 not in plan, 422 invalid parameters, 429 limit reached. The guides above show how to handle each one in your stack; the full reference is in the API documentation.

Frequently asked questions