Square Miles to Mẫu (Northern Vietnam): the quick answer
1 mi² = 719.441 mẫu-b
1 square mile equals 719.441 mẫu (northern Vietnam)
To convert square miles to mẫu (northern Vietnam), multiply the value by 719.441. To go the other way, multiply mẫu (northern Vietnam) by 0.00138997 to get square miles.