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Argentine Peso (ARS) to Old Mauritanian Ouguiya (MRO)

Convert Argentine pesos to old Mauritanian ouguiyas at the live mid-market rate. Reverse: MRO to ARS

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 ARS to MRU.

1 Argentine Peso =

0.2342 MRO 0.00% today

1 ARS = 0.234213 MRO · 1 MRO = 4.26962 ARS

Mid-market rate, updated 10:54 UTC. Paid plans update as often as every 60 seconds. Get ARS→MRO rates via API

ARS to MRO over the last year

0.240.250.26Nov ’25Jan ’26Mar ’26May ’26Jul ’26Sep ’26
52-week high
0.26475
52-week low
0.23410
52-week average
0.24775
Change over the year
−6.54%

Conversion tables

ARS to MRO
ARS MRO
1 ARS 0.2342 MRO
10 ARS 2.34 MRO
100 ARS 23.42 MRO
1,000 ARS 234.21 MRO
10,000 ARS 2,342.13 MRO
50,000 ARS 11,710.65 MRO
100,000 ARS 23,421.29 MRO
MRO to ARS
MRO ARS
1 MRO 4.27 ARS
10 MRO 42.70 ARS
100 MRO 426.96 ARS
1,000 MRO 4,269.62 ARS
10,000 MRO 42,696.19 ARS
50,000 MRO 213,480.94 ARS
100,000 MRO 426,961.88 ARS

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

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Questions about ARS to MRO

How much is 1 ARS in MRO?

1 Argentine Peso is 0.234213 old Mauritanian ouguiyas at the mid-market rate of 4 October 2026, 10:54 UTC, and 1 MRO is 4.26962 ARS.

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

Over the last 52 weeks 1 ARS ranged from 0.234097 to 0.264746 MRO, 0.24775 MRO on average.

Which exchange rate is this?

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