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Currency Exchange APIs

Access foreign exchange (forex) rates, currency conversion services, and historical exchange rate data from central banks and financial institutions worldwide.

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Available APIs

1Forge

Forex currency market dataAuth: API Key | HTTPS: Yes | CORS: Unknown

Amdoren

Free currency API with over 150 currenciesAuth: API Key | HTTPS: Yes | CORS: Unknown

Fixer.io

Exchange rates and currency conversionAuth: API Key | HTTPS: No | CORS: Unknown

Bank of Russia

Exchange rates and currency conversionAuth: None | HTTPS: Yes | CORS: Unknown

Currency-api

Free Currency Exchange Rates API with 150+ Currencies & No Rate LimitsAuth: None | HTTPS: Yes | CORS: Yes

CurrencyFreaks

Provides current and historical currency exchange rates with free plan 1K requests/monthAuth: API Key | HTTPS: Yes | CORS: Yes

Currencylayer

Exchange rates and currency conversionAuth: API Key | HTTPS: Yes | CORS: Unknown

CurrencyScoop

Real-time and historical currency rates JSON APIAuth: API Key | HTTPS: Yes | CORS: Yes

Czech National Bank

A collection of exchange ratesAuth: None | HTTPS: Yes | CORS: Unknown

Economia.Awesome

Portuguese free currency prices and conversion with no rate limitsAuth: None | HTTPS: Yes | CORS: Unknown

ExchangeRate-API

Free currency conversionAuth: API Key | HTTPS: Yes | CORS: Yes

Exchangerate.host

Free foreign exchange & crypto rates APIAuth: None | HTTPS: Yes | CORS: Unknown

Exchangeratesapi.io

Exchange rates with currency conversionAuth: API Key | HTTPS: Yes | CORS: Yes

Frankfurter

Exchange rates, currency conversion and time seriesAuth: None | HTTPS: Yes | CORS: Yes

FreeForexAPI

Real-time foreign exchange rates for major currency pairsAuth: None | HTTPS: Yes | CORS: No

National Bank of Poland

A collection of currency exchange rates (data in XML and JSON)Auth: None | HTTPS: Yes | CORS: Yes

VATComply.com

Exchange rates, geolocation and VAT number validationAuth: None | HTTPS: Yes | CORS: Yes

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Use Cases

Currency exchange APIs are essential for:
  • E-commerce: Display prices in multiple currencies and process international payments
  • Travel Apps: Convert currencies for travelers and show local prices
  • Financial Apps: Track forex rates and build currency converters
  • Accounting Software: Handle multi-currency transactions and reporting
  • Investment Platforms: Monitor foreign exchange markets
  • Banking Applications: Provide real-time exchange rates to customers

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Key Features

Most currency exchange APIs provide:
  • Real-time Rates: Current exchange rates updated frequently throughout the day
  • Historical Data: Access to past exchange rates for analysis and reporting
  • Currency Conversion: Direct conversion between any two currencies
  • Time Series: Track rate changes over time
  • Multiple Currencies: Support for 150+ global currencies
  • Base Currency: Ability to set any currency as the base for calculations

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Getting Started

When choosing a currency exchange API:
  1. Check update frequency: How often are rates refreshed?
  2. Review coverage: Does it include all currencies you need?
  3. Understand pricing: Many offer free tiers with rate limits
  4. Verify data sources: Central banks provide the most reliable data
  5. Consider reliability: Look for APIs with high uptime guarantees
  6. Check historical data: How far back does historical data go?

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Free vs Paid Options

Free APIs (like Currency-api, Frankfurter, Exchangerate.host):
  • Great for personal projects and development
  • May have rate limits
  • Usually sufficient for basic currency conversion
Paid APIs (like Fixer.io, Currencylayer, CurrencyFreaks):
  • Higher rate limits
  • More frequent updates
  • Additional features like time series and fluctuation data
  • Better for production applications
  • Central Banks: Bank of Russia, Czech National Bank, National Bank of Poland
  • Financial Data: Fixer.io, Currencylayer, 1Forge
  • Open Source: Frankfurter, Currency-api
  • Regional: Economia.Awesome (Brazil), VATComply.com (Europe)