Currency Exchange APIs

Currency rates and conversion

17 APIs in this category
17
APIs listed
9
need no API key (53%)
8
CORS enabled (47%)
16
HTTPS (94%)

This directory lists 17 currency exchange APIs. 4 of them require no API key and support CORS, so you can call them directly from browser JavaScript with no backend and no sign-up. Every entry shows whether it needs authentication, serves over HTTPS and allows cross-origin requests, so you can pick one that fits your stack before you read a single doc page.

Showing 17 of 17 APIs

1Forge

Real-time forex and currency market data with exchange rate updates

Auth: apiKey HTTPS CORS: Unknown

Amdoren

Free currency API supporting over 150 global currencies

Auth: apiKey HTTPS CORS: Unknown

apilayer fixer.io

Reliable exchange rate and currency conversion API

Auth: apiKey HTTPS CORS: Unknown

Bank of Russia

Official exchange rates and currency conversion data from the Bank of Russia

Auth: No HTTPS CORS: Unknown

Currency-api

Free exchange rate API with 150+ currencies and no request limits

Auth: No HTTPS CORS: Yes

CurrencyFreaks

Current and historical exchange rates with free plan for 1K requests per month

Auth: apiKey HTTPS CORS: Yes

Currencylayer

Real-time exchange rates and currency conversion data API

Auth: apiKey HTTPS CORS: Unknown

CurrencyScoop

Real-time and historical foreign exchange rates in JSON format

Auth: apiKey HTTPS CORS: Yes

Czech National Bank

Official exchange rate data provided by the Czech National Bank

Auth: No HTTPS CORS: Unknown

Economia.Awesome

Portuguese open API for currency prices and conversion with no limits

Auth: No HTTPS CORS: Unknown

ExchangeRate-API

Free and easy-to-use currency conversion API

Auth: apiKey HTTPS CORS: Yes

Exchangerate.host

Free API for foreign exchange and cryptocurrency rates

Auth: No HTTPS CORS: Unknown

Exchangeratesapi.io

Exchange rate API for currency conversion and financial data

Auth: apiKey HTTPS CORS: Yes

Frankfurter

Open-source exchange rate and currency conversion API with time series support

Auth: No HTTPS CORS: Yes

FreeForexAPI

Real-time foreign exchange rate data for major currency pairs

Auth: No HTTPS CORS: No

National Bank of Poland

Official exchange rate data from the National Bank of Poland (XML and JSON)

Auth: No HTTPS CORS: Yes

VATComply.com

Exchange rates, geolocation, and VAT number validation API

Auth: No HTTPS CORS: Yes

Best Currency Exchange APIs for Developers

A currency exchange API allows developers to retrieve real-time exchange rates, perform currency conversions, and access historical forex data for over 150 world currencies. These APIs are essential for e-commerce, fintech, and international applications.

CodeHelper's curated currency exchange API collection includes APIs covering live rates, historical data, forex feeds, and multi-currency conversion services.

What to look for in a currency exchange API

  • Update frequency: Live trading apps need minute-by-minute rate updates, while e-commerce sites typically need hourly or daily refreshes.
  • Currency coverage: Ensure the API covers all currencies and exotic pairs your application requires.
  • Historical data: Time-series data lets you build currency trend charts and perform backtesting on conversion strategies.

How to use this API directory

  1. Browse the curated list of APIs below.
  2. Click any API to visit its documentation.
  3. Check the Auth column to understand what credentials you need.

Whether you are building a currency converter or a multi-currency e-commerce platform, this free curated API directory saves you hours of research.

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