Narodowy Bank Polski Exchange Rate API

Official Narodowy Bank Polski rates for 10 Sept 2026: 1 USD = 3.7103 PLN, 1 EUR = 4.318 PLN. All 32 currencies published, history back to 2016. Free JSON API for tax, audits, and compliant invoicing.

Narodowy Bank Polski: every PLN rate the bank publishes, as JSON. 32 currencies, archive back to 2016, latest table free on every plan. Get your API key.

About Narodowy Bank Polski

Narodowy Bank Polski is Poland's central bank. Its Table A of average foreign currency rates is published each business day around 12:00 Warsaw time and is the legally mandated rate for Polish accounting, tax, and customs.

• Official website: nbp.pl
• Official rate publication: Exchange rates (Table A)

Quick start

One request for the pair you need — EUR to PLN at the official Narodowy Bank Polski rate:

curl "https://allratestoday.com/api/v1/central-bank/nbp/latest?source=EUR&target=PLN" \
  -H "Authorization: Bearer art_live_your_key"

Or the bank's full published table:

curl "https://allratestoday.com/api/v1/central-bank/nbp/latest" \
  -H "Authorization: Bearer art_live_your_key"

On paid plans, any historical date or a time series:

curl "https://allratestoday.com/api/v1/central-bank/nbp/history?source=EUR&target=PLN&from=2025-01-01" \
  -H "Authorization: Bearer art_live_your_key"

Latest published rates (2026-09-10)

Narodowy Bank Polski's newest published table, verbatim — the same rows the /latest endpoint returns at this moment. Values are PLN per 1 unit of each currency:

Download this table: Excel (.xlsx) CSV (paid plan required)

Base	Quote	Type	Rate
AUD	PLN	middle	2.6759
BRL	PLN	middle	0.7263
CAD	PLN	middle	2.6879
CHF	PLN	middle	4.5792
CLP	PLN	middle	0.004
CNY	PLN	middle	0.5533
CZK	PLN	middle	0.1781
DKK	PLN	middle	0.5777
EUR	PLN	middle	4.318
GBP	PLN	middle	5.03
HKD	PLN	middle	0.4732
HUF	PLN	middle	0.011874
IDR	PLN	middle	0.00021159
ILS	PLN	middle	1.2296
INR	PLN	middle	0.03888
ISK	PLN	middle	0.030887
JPY	PLN	middle	0.024151
KRW	PLN	middle	0.002765
MXN	PLN	middle	0.2194
MYR	PLN	middle	0.9125
NOK	PLN	middle	0.4024
NZD	PLN	middle	2.169
PHP	PLN	middle	0.0593
RON	PLN	middle	0.822
SEK	PLN	middle	0.3864
SGD	PLN	middle	2.9335
THB	PLN	middle	0.1127
TRY	PLN	middle	0.0763
UAH	PLN	middle	0.0832
USD	PLN	middle	3.7103
XDR	PLN	middle	5.0913
ZAR	PLN	middle	0.2309

Node.js / TypeScript client

A dedicated zero-dependency npm package wraps these endpoints — nbp-exchange-rate:

npm install nbp-exchange-rate

import { getRate } from 'nbp-exchange-rate';

const pair = await getRate('EUR', 'PLN', { apiKey: 'art_live_...' });
console.log(pair.rate, pair.rate_date);

Zero dependencies, TypeScript types included, and it runs anywhere fetch exists — Node 18+, Bun, Deno, and edge runtimes.

Full reference — installation, all four functions, response shapes, error codes: nbp-exchange-rate documentation.

Why use the official Narodowy Bank Polski rate?

A market rate is a moving target; the rate Narodowy Bank Polski publishes is a fixed, citable figure that stays put once printed — which is why invoicing, customs, audit evidence, and statutory accounting in Poland lean on it rather than on a live feed. Every response from this API carries the bank's own rate_date, and on days with no publication you get the most recent published table — the one compliance rules tell you to apply.

Pairs the bank doesn't print directly are resolved from its table (inverse or cross via PLN) and explicitly flagged "derived": true — so what the bank printed and what was computed are never confused.

Endpoints

• GET /api/v1/central-bank/nbp/latest — latest table or single pair (all plans)
• GET /api/v1/central-bank/nbp/{YYYY-MM-DD} — the table for any date (paid plans)
• GET /api/v1/central-bank/nbp/history — time series, up to 5,000 rows (paid plans)
• GET /api/v1/central-bank/nbp/availability — publication calendar: the dates the bank actually published (all plans)

Full parameter reference in the API documentation. Every request counts toward your plan's monthly quota — rates change once per business day, so caching a published table locally makes a small quota go far.

Frequently asked questions

Does an exchange rate API exist for Narodowy Bank Polski data?

Yes. This endpoint returns Narodowy Bank Polski's official daily figures as JSON; the newest table is free on every plan.

How often are the rates updated?

Narodowy Bank Polski publishes once per business day; the API ingests each new table shortly after publication (latest: 2026-09-10).

Are these really Narodowy Bank Polski's official figures?

Yes. Every value comes from Narodowy Bank Polski's own publication and is served unmodified, carrying the bank's publication date; computed pairs are explicitly flagged derived.

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