Dunam (Donum) to Square Inches: the quick answer
1 dunam = 1,550,000 in²
1 dunam (donum) equals 1,550,000 square inches
To convert dunam (donum) to square inches, multiply the value by 1,550,000. To go the other way, multiply square inches by 6.4516 × 10⁻⁷ to get dunam (donum).