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Old Belarusian Ruble (BYR) to Czech Koruna (CZK)

Convert old Belarusian rubles to Czech korunas at the live mid-market rate. Reverse: CZK to BYR

The Old Belarusian Ruble is no longer in use

Old Belarusian Ruble (BYR) was replaced by the Belarusian Ruble (BYN) in 2016. For today’s money, convert BYN to CZK.

1 Old Belarusian Ruble =

0.001108 CZK 0.00% today

1 BYR = 0.0011075 CZK · 1 CZK = 902.934 BYR

Mid-market rate, updated 08:17 UTC. Paid plans update as often as every 60 seconds. Get BYR→CZK rates via API

BYR to CZK over the last year

0.00060.00080.001Nov ’25Jan ’26Mar ’26May ’26Jul ’26Sep ’26
52-week high
0.0011097
52-week low
0.0006083
52-week average
0.0008308
Change over the year
+81.39%

Conversion tables

BYR to CZK
BYR CZK
1 BYR 0.001108 CZK
10 BYR 0.01108 CZK
100 BYR 0.1108 CZK
1,000 BYR 1.11 CZK
10,000 BYR 11.08 CZK
50,000 BYR 55.38 CZK
100,000 BYR 110.75 CZK
CZK to BYR
CZK BYR
1 CZK 903 BYR
10 CZK 9,029 BYR
100 CZK 90,293 BYR
1,000 CZK 902,934 BYR
10,000 CZK 9,029,344 BYR
50,000 CZK 45,146,722 BYR
100,000 CZK 90,293,443 BYR

Get BYR→CZK rates via API

The live rate, the rate on any past day or a whole range, for CZK and 170+ other currencies, as JSON. Free plan included. See the exchange rate API.

Get a free API key API documentation 
curl https://api.currencyapi.com/v3/latest \
  -G -d base_currency=BYR -d currencies=CZK \
  -H "apikey: YOUR-API-KEY"

# the rate on a past day
curl https://api.currencyapi.com/v3/historical \
  -G -d base_currency=BYR -d currencies=CZK \
  -d date=2025-10-04 \
  -H "apikey: YOUR-API-KEY"

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Questions about BYR to CZK

How much is 1 BYR in CZK?

1 Old Belarusian Ruble is 0.0011075 Czech korunas at the mid-market rate of 4 October 2026, 08:17 UTC, and 1 CZK is 902.934 BYR.

What was the BYR to CZK rate over the last year?

Over the last 52 weeks 1 BYR ranged from 0.00060833 to 0.00110971 CZK, 0.00083076 CZK on average.

Which exchange rate is this?

The mid-market rate: the midpoint between what currency markets pay and ask for BYR/CZK, without the margin a bank or card issuer adds, so the rate you are charged is usually a little worse.