Rate-API is a developer-first exchange-rates API. We give engineers a fast, dependable way to add currency conversion, historical rates and crypto prices to their products — without scraping pages, hard-coding values or wrestling with clunky integrations.
We believe exchange-rate data should be simple to consume, honest about its limits, and priced fairly. One API key, clear documentation, predictable rate limits, and responses you can model in minutes.
We offer 160+ world currencies refreshed hourly; conversion, currency pairs, historical rates and cryptocurrency prices; JSON, XML and CSV output with rate-limit headers and usage metering; and official SDKs for PHP, JavaScript and Python plus an MCP server for AI tools.
Our API is versioned so integrations keep working as we improve. Whether you’re shipping a side project on the free plan or running production fintech, the same reliable data is one request away.