Jō (Tatami Mats, Japan) to Square Kilometers: the quick answer
To convert jō (tatami mats, Japan) to square kilometers, multiply the value by 1.62 × 10⁻⁶. To go the other way, multiply square kilometers by 617,284 to get jō (tatami mats, Japan).
↔ Convert square kilometers to jō (tatami mats, Japan) instead