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

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

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 CZK to BYN.

1 Czech Koruna =

903 BYR 0.00% today

1 CZK = 902.934 BYR · 1 BYR = 0.0011075 CZK

Mid-market rate, updated 09:48 UTC. Paid plans update as often as every 60 seconds. Get CZK→BYR rates via API

CZK to BYR over the last year

1,000.001,250.001,500.00Nov ’25Jan ’26Mar ’26May ’26Jul ’26Sep ’26
52-week high
1,643.83
52-week low
901.14
52-week average
1,261.92
Change over the year
−44.87%

Conversion tables

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 45,146,718 BYR
100,000 CZK 90,293,437 BYR
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

Get CZK→BYR rates via API

The live rate, the rate on any past day or a whole range, for BYR 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=CZK -d currencies=BYR \
  -H "apikey: YOUR-API-KEY"

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

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Questions about CZK to BYR

How much is 1 CZK in BYR?

1 Czech Koruna is 902.934 old Belarusian rubles at the mid-market rate of 4 October 2026, 09:48 UTC, and 1 BYR is 0.0011075 CZK.

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

Over the last 52 weeks 1 CZK ranged from 901.137 to 1,643.83 BYR, 1,261.92 BYR on average.

Which exchange rate is this?

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