1. Currency converter
  2. BYR to MRO

Old Belarusian Ruble (BYR) to Old Mauritanian Ouguiya (MRO)

Convert old Belarusian rubles to old Mauritanian ouguiyas at the live mid-market rate. Reverse: MRO 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 MRO.

The Old Mauritanian Ouguiya is no longer in use

Old Mauritanian Ouguiya (MRO) was replaced by the Mauritanian Ouguiya (MRU) in 2018. For today’s money, convert BYR to MRU.

1 Old Belarusian Ruble =

0.01821 MRO 0.00% today

1 BYR = 0.0182143 MRO · 1 MRO = 54.902 BYR

Mid-market rate, updated 08:11 UTC. Paid plans update as often as every 60 seconds. Get BYR→MRO rates via API

BYR to MRO over the last year

0.010.01250.0150.0175Nov ’25Jan ’26Mar ’26May ’26Jul ’26Sep ’26
52-week high
0.018214
52-week low
0.010453
52-week average
0.014169
Change over the year
+72.65%

Conversion tables

BYR to MRO
BYR MRO
1 BYR 0.01821 MRO
10 BYR 0.1821 MRO
100 BYR 1.82 MRO
1,000 BYR 18.21 MRO
10,000 BYR 182.14 MRO
50,000 BYR 910.71 MRO
100,000 BYR 1,821.43 MRO
MRO to BYR
MRO BYR
1 MRO 55 BYR
10 MRO 549 BYR
100 MRO 5,490 BYR
1,000 MRO 54,902 BYR
10,000 MRO 549,020 BYR
50,000 MRO 2,745,099 BYR
100,000 MRO 5,490,199 BYR

Get BYR→MRO rates via API

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

Related conversions

Popular Old Belarusian Ruble conversions

Popular Old Mauritanian Ouguiya conversions

Questions about BYR to MRO

How much is 1 BYR in MRO?

1 Old Belarusian Ruble is 0.0182143 old Mauritanian ouguiyas at the mid-market rate of 4 October 2026, 08:11 UTC, and 1 MRO is 54.902 BYR.

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

Over the last 52 weeks 1 BYR ranged from 0.0104533 to 0.0182143 MRO, 0.0141689 MRO on average.

Which exchange rate is this?

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