Arpent (Mauritius) to Ares: the quick answer
1 arpent-mu = 42.21 a
1 arpent (Mauritius) equals 42.21 ares
To convert arpent (Mauritius) to ares, multiply the value by 42.21. To go the other way, multiply ares by 0.0236911 to get arpent (Mauritius).