Currency Exchange APIs let you add currency exchange capabilities without building from scratch. Every entry below is profiled with trust signals — pricing model, authentication requirements, CORS support, rate limits, and live uptime checks — so you can compare options and pick production-safe choices instead of guessing from a link list.
| API | Pricing | Auth | CORS | Health | |
|---|---|---|---|---|---|
| 1Forge Forex currency market data | Freemium | API Key | Yes | Profile | |
| 1Forge Finance APIs API Stock and Forex Data and Realtime Quotes | Free | Unknown | Yes | Profile | |
| API for the Settlement Currency Rate converter API This API provides a range of functions to get back currency conversion rates and amounts based on current Mastercard currency conversion values. | Unknown | Unknown | Yes | Profile | |
| AWS DataExchange API Official AWS DataExchange service API exposed through AWS SDKs and service API references. | Paid | API Key | Yes | Profile | |
| Amdoren Free currency API with over 150 currencies | Free | API Key | No | Profile | |
| Bank of Russia Exchange rates and currency conversion | Free | No | No | Profile | |
| Convert Currency to Multiple Currencies Convert currencies from a source currency to multiple target currencies. | Freemium | API Key | No | Profile | |
| Currency-api Free Currency Exchange Rates API with 150+ Currencies & No Rate Limits | Free | No | No | Profile | |
| CurrencyFreaks Provides current and historical currency exchange rates with free plan 1K requests/month | Freemium | API Key | Yes | Profile | |
| CurrencyScoop Real-time and historical currency rates JSON API | Freemium | API Key | No | Profile | |
| Currencyapi Currency Conversion API and cryptocurrency prices, updated minutely | Freemium | API Key | No | Profile | |
| Currencylayer API Exchange rates and currency conversion | Paid | API Key | Unknown | Profile | |
| Czech National Bank A collection of exchange rates | Free | No | Yes | Profile | |
| Economia.Awesome Portuguese free currency prices and conversion with no rate limits | Free | No | No | Profile | |
| ExchangeRate-API Free currency conversion | Freemium | API Key | No | Profile | |
| Exchangerate.dev API Live & historical FX, 168 pairs back to 1999, Frankfurter-compatible, free 10k/mo | Free | API Key | Unknown | Profile | |
| Exchangerate.host Free foreign exchange & crypto rates API | Free | API Key | No | Profile | |
| Exchangeratesapi.io API Exchange rates with currency conversion | Paid | API Key | Yes | Profile | |
| Fixer API Exchange rates and currency conversion | Paid | API Key | Unknown | Profile | |
| Frankfurter Exchange rates, currency conversion and time series | Free | No | Yes | Profile | |
| FxFeed.io Foreign exchange rates, currency conversion and time series data | Freemium | API Key | Yes | Profile | |
| FxRatesAPI Real-time exchange rates, historical rates and currency conversion | Freemium | API Key | Yes | Profile | |
| Google Ad Exchange Buyer API II Official Google Ad Exchange Buyer API II REST API (v2beta1) discovered via Google APIs Discovery Service. | Unknown | Unknown | Yes | Profile | |
| IP geolocation API Abstract IP geolocation API allows developers to retrieve the region, country and city behind any IP worldwide. The API covers the geolocation of IPv4 and IPv6 addresses in 180+ countries worldwide. Extra information can | Unknown | API Key | Yes | Profile | |
| Interzoid Convert Currency Rate API This API enables you to convert an amount of one currency into another currency using current foreign exchange rates. | Unknown | Unknown | Yes | Profile | |
| Manyapis Exchange rates and currency conversion with free plan 50 requests/day | Freemium | API Key | No | Profile | |
| MetalpriceAPI Real-time and historical exchange rates and currency conversion API | Freemium | API Key | No | Profile | |
| National Bank of Poland A collection of currency exchange rates (data in XML and JSON) | Free | No | No | Profile | |
| PowerTools Developer API Apptigent PowerTools Developer Edition is a powerful suite of API endpoints for custom applications running on any stack. Manipulate text, modify collections, format dates and times, convert currency, perform advanced ma | Unknown | Unknown | Yes | Profile | |
| RBA Exchange Rates API Real-time and historical Reserve Bank of Australia (RBA) exchange rates API | Free | API Key | Yes | Profile | |
| Sonar Trading API Currency Authority: Exchange Rate of 1453 country currencies and crypto currencies | Paid | Unknown | Yes | Profile | |
| Unirate Free Exchange Rates and Currency Conversion | Free | API Key | Yes | Profile | |
| VATComply.com Exchange rates, geolocation and VAT number validation | Free | No | Yes | Profile |
Start with pricing and auth: free tiers and no-auth APIs are fastest to prototype with. Then check CORS if your app calls the API from the browser, and health before you commit — a great API that's been down for a week will block your launch. Each profile below shows all of these signals plus rate limits where documented.