How to convert currencies in your app

Currency conversion is one of the most common tasks when building financial or e-commerce features. With Rate-API you can convert between any two of 160+ currencies in one call.

Direct conversion

The /convert endpoint takes a source currency, a target currency and an amount:

GET /api/v1/YOUR_API_KEY/convert?from=GBP&to=JPY&amount=250

Rates are computed against USD under the hood, so even pairs like GBP→JPY resolve correctly via cross-rates.

Caching

Rates update hourly, so you can safely cache responses for a few minutes to reduce request volume and stay well within your plan quota.

Handling precision

Use the precision query parameter to control the number of decimal places in the result.