Currencylayer
Delivers exchange rates and currency conversion via API key.
Read docs Updated 2026-06-16
What is Currencylayer?
Currencylayer is a finance API focused on exchange rates and currency conversion.
It supports developers and applications requiring currency data integration.
What you can build with Currencylayer
Real-time currency converter widget
Embed live exchange rates in web or mobile apps to let users instantly convert between 170+ currencies using the /convert endpoint.
E-commerce price localization
Dynamically adjust product prices in checkout flows based on the shopper's location by fetching current rates from the /live endpoint.
Financial reporting dashboard
Pull historical exchange rates via the /historical endpoint to generate accurate multi-currency revenue reports and charts.
Get started with Currencylayer
- 1Sign up at currencylayer.com and obtain your free API access key
- 2Review the documentation for available endpoints such as /live and /convert
- 3Construct an HTTPS GET request including your access_key parameter
- 4Parse the JSON response containing rates or converted amounts
- 5Implement error handling for invalid currencies or exceeded quotas
Currencylayer: pros & cons
Pros
- +Simple REST API with consistent JSON responses
- +Supports 170+ currencies with real-time updates
- +HTTPS only with API key authentication
- +Lightweight integration suitable for quick prototypes
Cons
- –Free tier limited to 250 requests per month
- –No built-in support for cryptocurrency rates
- –Historical data requires paid subscription
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A REST API service that delivers current and historical foreign exchange rates plus currency conversion functionality.
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