Pricing

Pay per usage

Currency Exchange Rate Tracker — Live Rates & Change

Get current exchange rates for a base currency against a list of others, plus the percent change over a chosen number of days. Official ECB reference rates, for finance and international ops teams.

Pricing

Pay per usage

Rating

0.0

(0)

Developer

Timothy Kelvin

Actor stats

Bookmarked

Total users

Monthly active users

3 days ago

Last modified

Input

{
  "baseCurrency": "USD",
  "targetCurrencies": "EUR,GBP,JPY",
  "daysBack": 7
}

Field	Type	Description
`baseCurrency`	string	Three-letter ISO currency code to convert from. Default `"USD"`.
`targetCurrencies`	string (optional)	Comma-separated three-letter currency codes. Leave blank for all available currencies.
`daysBack`	number	Compute percent change versus the rate this many days ago. Default `7`, max `90`.

Output

One record per currency:

{
  "baseCurrency": "USD",
  "currency": "EUR",
  "currentRate": 0.86453,
  "currentDate": "2026-08-14",
  "comparisonRate": 0.8707,
  "comparisonDate": "2026-07-31",
  "percentChange": -0.7085
}

comparisonDate may differ slightly from an exact daysBack offset — forex markets are closed on weekends and ECB holidays, so the nearest prior trading day is used automatically.

A request is billed once regardless of how many target currencies are returned.

How it works

Direct calls to the Frankfurter API (api.frankfurter.dev), which re-serves the European Central Bank's daily reference rates. No proxy, no key, no scraping — free for commercial use, open source (MIT).

Pricing note

Billed per request, not per currency returned — one charge whether you check 1 currency or all of them.

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