Read docs Updated 2026-06-16
What is Fixer?
Fixer is an API that provides exchange rates and currency conversion functionality.
It is useful for finance applications and services that require currency data.
What you can build with Fixer
Build a real-time currency converter
Integrate live exchange rates into web or mobile apps to let users convert between currencies with up-to-date values from the API.
Display multi-currency pricing in e-commerce
Fetch rates to automatically show product prices in a visitor's local currency on checkout or product pages.
Power financial dashboards and reports
Pull historical and current rates to generate charts and summaries for expense tracking or investment monitoring tools.
Get started with Fixer
- 1Sign up on the Fixer website and obtain an API key
- 2Review the available endpoints and supported currencies in the documentation
- 3Construct a request URL including your API key as a query parameter
- 4Send the request via HTTP (note: no HTTPS support) and parse the JSON response
- 5Handle rate data in your application logic for conversion or display
Fixer: pros & cons
Pros
- +Simple API key authentication
- +Direct support for currency conversion calculations
- +Lightweight JSON responses for quick integration
- +Focused solely on exchange rate data
Cons
- –No HTTPS encryption on requests
- –API key sent in plain query parameters
- –Limited to exchange rates and conversion only
Did you find this helpful?
Frequently asked questions
Fixer is a finance API that provides current and historical exchange rates along with currency conversion functionality.
User reviews
Verified reviews from the community shape this listing's rating.
Loading reviews…
Similar APIs
Other finance & crypto options worth comparing.