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

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

1 Old Mauritanian Ouguiya =

0.008459 BYN 0.00% today

1 MRO = 0.00845939 BYN · 1 BYN = 118.212 MRO

Mid-market rate, updated 15:32 UTC. Paid plans update as often as every 60 seconds. Get MRO→BYN rates via API

MRO to BYN over the last year

0.0080.009Nov ’25Jan ’26Mar ’26May ’26Jul ’26Sep ’26
52-week high
0.0095664
52-week low
0.0076191
52-week average
0.0083565
Change over the year
−10.75%

Conversion tables

MRO to BYN
MRO BYN
1 MRO 0.008459 BYN
10 MRO 0.08459 BYN
100 MRO 0.8459 BYN
1,000 MRO 8.46 BYN
10,000 MRO 84.59 BYN
50,000 MRO 422.97 BYN
100,000 MRO 845.94 BYN
BYN to MRO
BYN MRO
1 BYN 118.21 MRO
10 BYN 1,182.12 MRO
100 BYN 11,821.19 MRO
1,000 BYN 118,211.85 MRO
10,000 BYN 1,182,118.51 MRO
50,000 BYN 5,910,592.55 MRO
100,000 BYN 11,821,185.10 MRO

Get MRO→BYN rates via API

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

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

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Questions about MRO to BYN

How much is 1 MRO in BYN?

1 Old Mauritanian Ouguiya is 0.00845939 Belarusian rubles at the mid-market rate of 4 October 2026, 15:32 UTC, and 1 BYN is 118.212 MRO.

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

Over the last 52 weeks 1 MRO ranged from 0.00761907 to 0.0095664 BYN, 0.00835654 BYN on average.

Which exchange rate is this?

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