ExchangeRate-API

Overview

ExchangeRate-API offers a web service designed to deliver current and historical foreign exchange rate data for over 160 currencies worldwide. Established in 2010, the API provides developers with access to data points essential for applications ranging from e-commerce platforms needing to display prices in local currencies to financial applications requiring precise conversion figures. The service focuses on ease of integration through a RESTful interface that returns data in JSON format, making it compatible with a wide array of programming languages and environments.

The core functionality includes endpoints for retrieving the latest exchange rates against a specified base currency, accessing historical rates for a particular date, and performing direct currency conversions. This capability supports use cases such as dynamic pricing adjustments on global retail websites, calculating travel expenses in various denominations, and populating financial analysis tools with accurate market data. For instance, an e-commerce platform could use the API to automatically update product prices for international customers based on the current USD to EUR exchange rate, ensuring pricing accuracy without manual intervention. Developers can explore the available endpoints and parameters in the ExchangeRate-API Standard Requests documentation.

ExchangeRate-API provides a free tier that allows for 1,500 requests per month, enabling developers to prototype and test integrations before committing to a paid plan. Paid tiers scale up to enterprise solutions, offering higher request volumes and additional features. The API's design emphasizes simplicity, with clear documentation and code examples in popular languages like Python, JavaScript, and PHP, which helps streamline the development process for integrating currency exchange functionalities.

The service is particularly well-suited for applications where reliable and up-to-date currency information is critical but without the need for high-frequency trading data. This includes business intelligence dashboards, invoicing systems that handle international transactions, and mobile applications that offer currency conversion utilities. Compared to other financial data providers, ExchangeRate-API positions itself as a practical solution for developers seeking straightforward access to exchange rate data without extensive configuration or complex authentication mechanisms. For example, a travel application could utilize the API to show users the real-time cost of a hotel room in their home currency, enhancing the user experience by providing immediate financial context.

Key features

• Real-time Exchange Rates: Provides the latest exchange rates for over 160 global currencies, updated regularly to reflect market changes.
• Historical Data Access: Developers can retrieve past exchange rates for any specific date, useful for trend analysis, reporting, and historical transaction reconciliation.
• Currency Conversion API: Offers a direct conversion endpoint to calculate the equivalent amount between any two supported currencies based on the latest rates.
• JSON Format Responses: All API responses are delivered in a standardized JSON format, facilitating parsing and integration into web and mobile applications.
• Extensive Currency Support: Covers a broad range of international currencies, including major world currencies and many less common ones, expanding global application reach.
• Developer-Friendly Documentation: Clear and comprehensive documentation includes code examples in multiple programming languages, simplifying the integration process.
• Free Tier Availability: A free plan allows for initial development and testing with 1,500 requests per month, supporting small-scale projects.

Pricing

ExchangeRate-API offers a tiered pricing model, including a free tier and several paid plans designed to accommodate varying usage levels. Pricing tiers are based primarily on the number of API requests per month.

Pricing as of 2026-05-08. For the most current details, refer to the ExchangeRate-API pricing page.

Common integrations

ExchangeRate-API is designed for broad compatibility, allowing integration into various applications and platforms:

• E-commerce Platforms: Integrate into shopping carts and product display pages to show prices in customers' local currencies, improving international sales. Popular platforms like Shopify can benefit from custom app development that calls the API to update currency displays dynamically, as detailed in Shopify's currency settings documentation.
• Travel Booking Systems: Display costs for flights, hotels, and tours in user-selected currencies, enhancing the booking experience for travelers worldwide.
• Financial Dashboards: Incorporate real-time exchange rates into financial reporting tools and business intelligence dashboards for accurate global financial oversight.
• Currency Converters: Power standalone currency converter applications, both web-based and mobile, providing users with up-to-date conversion tools.
• Invoicing and Accounting Software: Automate multi-currency invoicing and expense tracking, ensuring financial accuracy for international transactions.
• Payment Gateways: While payment gateways like Stripe handle conversions internally, developers building custom payment flows might use ExchangeRate-API to display estimated conversion amounts to users before transaction finalization, complementing services like the Stripe Payment Intents API.

Alternatives

Developers seeking currency exchange rate APIs have several options:

• Open Exchange Rates: Offers a similar service with a focus on ease of use and a free plan.
• Fixer: Provides real-time and historical exchange rates, often used for financial applications.
• Currencyapi.com: Delivers current and historical currency exchange rates with a robust API for developers.

Getting started

To begin using ExchangeRate-API, you typically need to sign up for an API key and then make HTTP requests to the provided endpoints. Here's a basic example using Python's requests library to fetch the latest exchange rates:

import requests

API_KEY = 'YOUR_API_KEY' # Replace with your actual API key
BASE_CURRENCY = 'USD'
TARGET_CURRENCY = 'EUR'

# Fetch latest exchange rates
url_latest = f"https://v6.exchangerate-api.com/v6/{API_KEY}/latest/{BASE_CURRENCY}"
response_latest = requests.get(url_latest)
data_latest = response_latest.json()

if data_latest['result'] == 'success':
    print(f"Latest exchange rates for {BASE_CURRENCY}:")
    print(f"1 {BASE_CURRENCY} = {data_latest['conversion_rates'][TARGET_CURRENCY]} {TARGET_CURRENCY}")
else:
    print(f"Error fetching latest rates: {data_latest['error-type']}")

# Example: Fetch historical rates for a specific date (e.g., 2023-01-01)
year = 2023
month = 1
day = 1
url_historical = f"https://v6.exchangerate-api.com/v6/{API_KEY}/history/{BASE_CURRENCY}/{year}/{month}/{day}"
response_historical = requests.get(url_historical)
data_historical = response_historical.json()

if data_historical['result'] == 'success':
    print(f"\nHistorical exchange rates for {BASE_CURRENCY} on {year}-{month}-{day}:")
    print(f"1 {BASE_CURRENCY} = {data_historical['conversion_rates'][TARGET_CURRENCY]} {TARGET_CURRENCY}")
else:
    print(f"Error fetching historical rates: {data_historical['error-type']}")

# Example: Convert an amount
amount_to_convert = 100
url_convert = f"https://v6.exchangerate-api.com/v6/{API_KEY}/pair/{BASE_CURRENCY}/{TARGET_CURRENCY}/{amount_to_convert}"
response_convert = requests.get(url_convert)
data_convert = response_convert.json()

if data_convert['result'] == 'success':
    print(f"\n{amount_to_convert} {BASE_CURRENCY} = {data_convert['conversion_result']} {TARGET_CURRENCY}")
else:
    print(f"Error converting amount: {data_convert['error-type']}")

This Python script demonstrates how to retrieve the latest exchange rate for a base currency (USD) to a target currency (EUR), fetch historical rates for a specific date, and perform a direct currency conversion. You would replace 'YOUR_API_KEY' with the key obtained after signing up on the ExchangeRate-API homepage. The API provides clear error messages in its responses, as shown in the conditional checks within the code, which aids in debugging and robust error handling for your applications. Further examples and detailed endpoint specifications are available in the ExchangeRate-API documentation.