Convert 100 Old Mauritanian Ouguiya (MRO) to Costa Rican Colón (CRC)

Convert old Mauritanian ouguiyas to Costa Rican colóns at the live mid-market rate. Reverse: CRC 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 CRC.

Amount

From

100 old Mauritanian ouguiyas =

129 CRC −0.08% today

1 MRO = 1.28543 CRC · 1 CRC = 0.777948 MRO

Mid-market rate, updated 10:15 UTC. Paid plans update as often as every 60 seconds. Get MRO→CRC rates via API

MRO to CRC over the last year

52-week high: 1.4125
52-week low: 1.2503
52-week average: 1.3241
Change over the year: −9.00%

Conversion tables

MRO to CRC
MRO	CRC
1 MRO	1 CRC
10 MRO	13 CRC
100 MRO	129 CRC
1,000 MRO	1,285 CRC
10,000 MRO	12,854 CRC
50,000 MRO	64,272 CRC
100,000 MRO	128,543 CRC

CRC to MRO
CRC	MRO
1 CRC	0.7779 MRO
10 CRC	7.78 MRO
100 CRC	77.79 MRO
1,000 CRC	777.95 MRO
10,000 CRC	7,779.48 MRO
50,000 CRC	38,897.42 MRO
100,000 CRC	77,794.84 MRO

Get MRO→CRC rates via API

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

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Questions about MRO to CRC

How much is 100 MRO in CRC?

100 old Mauritanian ouguiyas is 129 Costa Rican colóns at the mid-market rate of 4 October 2026, 10:15 UTC, when 1 MRO = 1.28543 CRC.

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

Over the last 52 weeks 1 MRO ranged from 1.25031 to 1.41254 CRC, 1.32406 CRC on average.

Which exchange rate is this?

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