Convert 1 Old Belarusian Ruble (BYR) to Optimism (OP)

Convert old Belarusian rubles to Optimism at the live mid-market rate. Reverse: OP 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 OP.

Amount

From

1 Old Belarusian Ruble =

0.0003856 OP +3.22% today

1 BYR = 0.00038555 OP · 1 OP = 2,593.67 BYR

Mid-market rate, updated 12:56 UTC. Paid plans update as often as every 60 seconds. Get BYR→OP rates via API

BYR to OP over the last year

52-week high: 0.00062094
52-week low: 0.00003887
52-week average: 0.00029423
Change over the year: +844.63%

Conversion tables

BYR to OP
BYR	OP
1 BYR	0.0003856 OP
10 BYR	0.003856 OP
100 BYR	0.03856 OP
1,000 BYR	0.3856 OP
10,000 BYR	3.85553300 OP
50,000 BYR	19.27766500 OP
100,000 BYR	38.55533000 OP

OP to BYR
OP	BYR
1 OP	2,594 BYR
10 OP	25,937 BYR
100 OP	259,367 BYR
1,000 OP	2,593,675 BYR
10,000 OP	25,936,748 BYR
50,000 OP	129,683,742 BYR
100,000 OP	259,367,484 BYR

Get BYR→OP rates via API

The live rate, the rate on any past day or a whole range, for OP 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=OP \
  -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=OP \
  -d date=2025-10-04 \
  -H "apikey: YOUR-API-KEY"

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Questions about BYR to OP

How much is 1 BYR in OP?

1 Old Belarusian Ruble is 0.0003856 Optimism at the mid-market rate of 4 October 2026, 12:56 UTC, when 1 BYR = 0.00038555 OP.

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

Over the last 52 weeks 1 BYR ranged from 0.00003887 to 0.00062094 OP, 0.00029423 OP on average.

Which exchange rate is this?

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