Narodowy Bank Polski Exchange Rate API

Official Narodowy Bank Polski rates for 11 Sept 2026: 1 USD = 3.7267 PLN, 1 EUR = 4.3228 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 (2026-09-11)

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	2.6712
BRL	PLN	middle	0.7309
CAD	PLN	middle	2.6916
CHF	PLN	middle	4.5768
CLP	PLN	middle	0.003956
CNY	PLN	middle	0.5555
CZK	PLN	middle	0.1784
DKK	PLN	middle	0.5783
EUR	PLN	middle	4.3228
GBP	PLN	middle	5.0332
HKD	PLN	middle	0.4752
HUF	PLN	middle	0.01188
IDR	PLN	middle	0.00021187
ILS	PLN	middle	1.2236
INR	PLN	middle	0.038964
ISK	PLN	middle	0.030877
JPY	PLN	middle	0.024183
KRW	PLN	middle	0.002776
MXN	PLN	middle	0.2197
MYR	PLN	middle	0.916
NOK	PLN	middle	0.4005
NZD	PLN	middle	2.1704
PHP	PLN	middle	0.0595
RON	PLN	middle	0.8225
SEK	PLN	middle	0.3848
SGD	PLN	middle	2.9396
THB	PLN	middle	0.1128
TRY	PLN	middle	0.0766
UAH	PLN	middle	0.0836
USD	PLN	middle	3.7267
XDR	PLN	middle	5.1113
ZAR	PLN	middle	0.2306

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: 2026-09-11).

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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