Square Arpents (Quebec) to Bigha (Uttar Pradesh / Bihar, Pucca): the quick answer
To convert square arpents (Quebec) to bigha (Uttar Pradesh / Bihar, pucca), multiply the value by 1.35171. To go the other way, multiply bigha (Uttar Pradesh / Bihar, pucca) by 0.739804 to get square arpents (Quebec).
↔ Convert bigha (Uttar Pradesh / Bihar, pucca) to square arpents (Quebec) instead