Convert 1,000 Old Mauritanian Ouguiya (MRO) to Optimism (OP)

Convert old Mauritanian ouguiyas to Optimism at the live mid-market rate. Reverse: OP 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 OP.

Amount

From

1,000 old Mauritanian ouguiyas =

21.04313530 OP +2.61% today

1 MRO = 0.0210431 OP · 1 OP = 47.5214 MRO

Mid-market rate, updated 14:30 UTC. Paid plans update as often as every 60 seconds. Get MRO→OP rates via API

MRO to OP over the last year

52-week high: 0.034091
52-week low: 0.003697
52-week average: 0.019286
Change over the year: +443.92%

Conversion tables

MRO to OP
MRO	OP
1 MRO	0.02104 OP
10 MRO	0.2104 OP
100 MRO	2.10431353 OP
1,000 MRO	21.04313530 OP
10,000 MRO	210.43135300 OP
50,000 MRO	1,052.15676500 OP
100,000 MRO	2,104.31353000 OP

OP to MRO
OP	MRO
1 OP	47.52 MRO
10 OP	475.21 MRO
100 OP	4,752.14 MRO
1,000 OP	47,521.44 MRO
10,000 OP	475,214.36 MRO
50,000 OP	2,376,071.79 MRO
100,000 OP	4,752,143.57 MRO

Get MRO→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=MRO -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=MRO -d currencies=OP \
  -d date=2025-10-04 \
  -H "apikey: YOUR-API-KEY"

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Questions about MRO to OP

How much is 1,000 MRO in OP?

1,000 old Mauritanian ouguiyas is 21.04313530 Optimism at the mid-market rate of 4 October 2026, 14:30 UTC, when 1 MRO = 0.0210431 OP.

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

Over the last 52 weeks 1 MRO ranged from 0.00369697 to 0.0340907 OP, 0.0192859 OP on average.

Which exchange rate is this?

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