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Belarusian rubles to Polish zlotys today

1 BYN = 1.2318 PLN · Live mid-market rate

Convert BYN to PLN at the mid-market exchange rate. Access real-time rates via our /api/rate endpoint (free API key required) or the developer docs.

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PLN
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Mid-market rate
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Exchange Rate Trend

BYN → PLN
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BYN to PLN Conversion Table

Convert BYN to PLN

BYN PLN
Br1 zł1.23
Br5 zł6.16
Br10 zł12.32
Br25 zł30.79
Br50 zł61.59
Br100 zł123.18
Br500 zł615.90
Br1,000 zł1,231.79
Br5,000 zł6,158.95
Br10,000 zł12,317.90

Convert PLN to BYN

PLN BYN
zł1 Br0.8118
zł5 Br4.0591
zł10 Br8.1183
zł25 Br20.2957
zł50 Br40.5913
zł100 Br81.1827
zł500 Br405.9133
zł1,000 Br811.8267
zł5,000 Br4,059.1335
zł10,000 Br8,118.2669

About the Belarusian Ruble (BYN)

The Belarusian Ruble (BYN) is the official currency used in international trade and commerce.

Key Factors That Influence BYN

  • Central bank monetary policy
  • Economic indicators
  • Trade balance
  • Political stability
  • Global market conditions

About the Polish Zloty (PLN)

The Polish Zloty (PLN) is managed by Narodowy Bank Polski. As one of the EU's largest economies outside the Eurozone, Poland's currency reflects its growing economic importance.

Key Factors That Influence PLN

  • NBP monetary policy
  • EU fund inflows
  • Export performance
  • Inflation targeting
  • Political and EU relations

Understanding the BYN/PLN Exchange Rate

The BYN/PLN exchange rate tells you how many Polish zlotys you get for 1 Belarusian Ruble. This is the mid-market rate — the real exchange rate without any markup. It's the same rate used by Google Finance.

AllRatesToday provides this rate via a free REST API, updated every 60 seconds from institutional interbank market data. Integrate live BYN/PLN rates into your app with our official SDKs for JavaScript, Python, PHP, and React.

The exchange rate between BYN and PLN fluctuates based on supply and demand in the foreign exchange market. Economic data releases, central bank announcements, and geopolitical events can all cause significant movements in the rate.

Currency converter API for BYN to PLN

This converter is a thin layer over two APIs. Both return JSON, both take one HTTP call, and both have a free tier — no credit card.

Mid-market exchange rate API

The live interbank midpoint — the number shown above. It moves continuously and is refreshed every 60 seconds across 160 currencies. Use it for pricing, checkout, display and anything a customer sees. 

curl "https://allratestoday.com/api/v1/rates?source=BYN&target=PLN" \
  -H "Authorization: Bearer YOUR_API_KEY"

[{ "rate": 0.8643, "source": "BYN", "target": "PLN",
   "time": "2026-08-16T11:01:24+0000" }]
  • Several targets at once — target=PLN,GBP,JPY returns one row per pair in a single call.
  • Historical — /api/historical-rates for a date range, or ?time=YYYY-MM-DD for one past day.
  • Four formats — add ?format=csv, xml or xlsx to get a file instead of JSON.

Endpoint reference · Get a free key

Central bank rate API

The rate a named institution actually published for a given date, from 116 central banks and 3 tax authorities. Unlike a mid-market rate it never changes after publication, which is what tax filings, customs valuations and audits require. 

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

{ "bank": "ecb", "rate_date": "2026-08-14", "rate": 0.8643,
  "rate_type": "reference", "derived": false, "method": "published" }
  • Any past date — /central-bank/{bank}/2026-06-30. If the bank did not publish that day you get the most recent prior date, flagged.
  • Every bank at once — /api/v1/central-banks/rates returns all sources for one pair, so you can compare what each institution published.
  • Nothing is guessed — pairs a bank does not print are cross-computed from that bank's own table and returned with "derived": true and the method used. Banks are never mixed.

All 119 sources · Endpoint reference

Official SDKs

npm install @allratestoday/sdk · pip install allratestoday · composer require allratestoday/sdk

For AI agents

An MCP server — @allratestoday/mcp-server — lets Claude, Cursor and other MCP clients pull these rates directly, no glue code.

Free tier

300 requests, no credit card, no trial expiry. Paid plans start at €4.99/month for 5,000 requests a month.

Which one do you need? If a regulator, tax authority or auditor names the source, use the official rate — the two can differ by several percent on the same day. For everything a customer sees, use the mid-market rate. On weekends and holidays the official endpoints return the most recent published date, which is the figure compliance rules expect you to apply.

Official BYN and PLN Central Bank Rates

The rate on this page is the live mid-market rate. For tax filings, customs valuations, audits, and compliant invoicing you often need the official reference rate published by the central bank instead. AllRatesToday also serves published central-bank rates as JSON, with history and a free latest-rates tier.

National Bank of the Republic of Belarus official rates → Narodowy Bank Polski official rates → All central banks →

How BYN/PLN Exchange Rates Work

Exchange rates are determined by supply and demand in the global foreign exchange (forex) market, the largest financial market in the world with over $6 trillion traded daily.

Floating vs Fixed Rates: Most major currencies like BYN and PLN have floating exchange rates, meaning their value is determined by market forces. Some currencies are pegged to another currency (usually USD) at a fixed rate.

Bid and Ask Prices: In forex markets, currencies are quoted with a bid price (what buyers pay) and ask price (what sellers receive). The mid-market rate shown on this page is the midpoint between these two prices.

Rate Fluctuations: The BYN/PLN rate can change every second during trading hours. Major economic announcements, interest rate decisions, and geopolitical events can cause significant moves in either direction.

Frequently Asked Questions About BYN/PLN

How do I convert BYN to PLN?

To convert BYN to PLN: (1) Use the calculator above to see the live mid-market rate. (2) For programmatic access, call our API: GET /api/v1/rates?source=BYN&target=PLN. Current rate: 1 BYN = 1.2318 PLN. Get your free API key at allratestoday.com/register.

What is 1 BYN in PLN today?

1 BYN equals 1.2318 PLN as of today. This is the mid-market exchange rate, which is the real rate without any bank markup. Rates fluctuate constantly based on market conditions, so check back regularly for updates.

Is the BYN going up or down against PLN today?

The BYN/PLN exchange rate fluctuates throughout the day based on market conditions. Today's rate is 1 BYN = 1.2318 PLN. Check our historical chart above to see the trend over the past day, week, month, or year to understand whether BYN is strengthening or weakening against PLN.

What is the best time to buy PLN with BYN?

The best time to exchange BYN to PLN depends on market conditions. Generally, rates tend to be more favorable during overlapping trading hours between major financial centers (London, New York, Tokyo). Avoid exchanging during weekends or bank holidays when spreads may be wider. Use our historical chart to identify trends and consider setting up rate alerts.

Why is BYN falling or rising against PLN?

Exchange rates between BYN and PLN are influenced by: interest rate differentials between central banks, inflation rates, GDP and economic growth data, trade balances, political stability, and global market sentiment. Major announcements from the Federal Reserve, ECB, or other central banks can cause significant short-term movements in the BYN/PLN rate.

How can I get BYN/PLN rates in my app?

Use the AllRatesToday API: (1) Register for a free API key at allratestoday.com/register. (2) Call GET /api/v1/rates?source=BYN&target=PLN with your Bearer token. (3) Rates update every 60 seconds from institutional interbank market data. (4) Install our official SDK for JavaScript (npm), Python (PyPI), or PHP (Packagist) for even faster integration.

What is the mid-market rate for BYN/PLN?

The mid-market rate (also called the interbank rate) is the midpoint between buy and sell prices in global currency markets. The current mid-market rate is 1 BYN = 1.2318 PLN. This is the "real" exchange rate without any bank markup. AllRatesToday provides this rate via a free API, sourced from institutional interbank market data.

Other BYN conversions

Building BYN/PLN into software?

These rates come from the AllRatesToday API. If you need them in an application rather than on a page, these are the places to start: