Currencylayer
Fixer.io
Open Exchange Rates
ExchangeRate-API
Currencyapi.com
Exchangeratesapi.io
Freecurrencyapi.com
BestExchangeRates
Exchangerate.dev
ExchangeRate-API
Fixer.io
BestExchangeRates
Currencyapi.com
Exchangeratesapi.io
Freecurrencyapi.com
Open Exchange Rates
Currencylayer provides a simple REST API with real-time and historical exchange rates for 168 world currencies, delivering currency pairs in universally usable JSON format - compatible with any of your applications.
Spot exchange rate data is retrieved from several major forex data providers in real-time, validated, processed and delivered hourly, every 10 minutes, or even within the 60-second market window.
Providing the most representative forex market value available ("midpoint" value) for every API request, the currencylayer API powers currency converters, mobile applications, financial software components and back-office systems all around the world.
exchangerate.dev is a free foreign-exchange rates API built for developers who need reliable rates without signup friction. The free tier includes 10,000 calls/month with no credit card required, live rates for major currency pairs updating roughly every 60 seconds on trading days, and daily ECB/FRED reference rates for the remaining pairs. Full history goes back to 1999 across all 465 supported pairs.
Every plan, including free, gets the same data freshness. Paid tiers add throughput and commercial-use licensing: Basic is $10/mo for 100,000 calls/month, Pro is $30/mo for up to 1,000,000 calls/month. It also includes an MCP server and llms.txt for AI-agent integration, a batch /convert endpoint, and a /range endpoint for historical queries.
Every response is source-labeled, so you always know whether a given rate is live or daily-reference.
Currencylayer
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Based on our record, Currencylayer seems to be more popular. It has been mentiond 3 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
CurrencyLayer: Provides free and premium plans with real-time and historical exchange rates. - Source: dev.to / over 1 year ago
Accurate and up-to-date exchange rate information is crucial for businesses, developers, and financial institutions alike. Whether you're building a financial application, running an e-commerce platform, or managing international investments, having access to reliable exchange rate data is essential. Fortunately, there are several free exchange rate APIs available, each offering a range of features and... - Source: dev.to / over 2 years ago
Currencylayer โ Reliable Exchange Rates and Currency Conversion for your Business, 1,000 API requests/month free. - Source: dev.to / over 2 years ago
Fixer.io - Fixer provides a free, simple, and lightweight API for current and historical foreign exchange rates and currency conversion. The API tracks rates published daily by the European Central Bank.
ExchangeRate-API - An easy to use, free & reliable Exchange Rate API trusted by tens of thousands of developers since 2010!
Open Exchange Rates - Free, hourly-updated exchange rates - a simple, accurate, open-source JSON API. Free for personal use, a bargain for everybody else.
BestExchangeRates - Compare FX and save when you send or spend abroad
Currencyapi.com - Currencyapi.com is a free, reliable & feature complete currency exchange rates API. 170+ world currencies & 60 second update rate.
Exchangeratesapi.io - Simple API for Global Currency Exchange Rates