National Bank of Poland

API

Free official currency exchange rates API (JSON/XML) from Poland’s central bank

Overview

The National Bank of Poland API offers access to official exchange rates for over 40 currencies against the Polish Złoty (PLN). Key endpoints include latest rates (single/multiple currencies), historical rate series, and daily averages. Responses support JSON and XML formats. Ideal for financial apps, currency conversion tools, economic reporting, or e-commerce platforms needing reliable PLN-based currency data. Maintained by Poland’s central bank, it ensures authoritative, up-to-date information for developers, businesses, and researchers.

Example Integration (JavaScript)

script.js JS


fetch('http://api.nbp.pl/en.html')
  .then(res => res.json())
  .then(data => console.log(data))
  .catch(err => console.error(err));

Key Features

RESTful
JSON & XML support
Official PLN rates
No API key required
Historical data access

Frequently Asked Questions

? Is National Bank of Poland API free to use?

Yes, the API is completely free for public use without subscription fees.

? Does it require an API Key?

No, the API does not require an API key for access to its core endpoints.

? What is the response format?

Responses are available in both JSON and XML; format can be specified via endpoint parameters.

Top Alternatives

European Central Bank API Search Google

ExchangeRate-API Compare

Fixer.io Search Google

Tool Info

Pricing Free

Category Currency Exchange

Platform Public API

Pros

⊕ Authoritative data source
⊕ Free to use
⊕ Multiple formats
⊕ Historical rate availability

Cons

⊖ Rate limits apply
⊖ Only PLN as base currency
⊖ Daily average updates (no real-time)