Chō (Japan) to Square Inches: the quick answer
1 chō = 15,371,900 in²
1 chō (Japan) equals 15,371,900 square inches
To convert chō (Japan) to square inches, multiply the value by 15,371,900. To go the other way, multiply square inches by 6.50536 × 10⁻⁸ to get chō (Japan).