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