Square Mils to Square Centimeters: the quick answer
1 mil² = 6.4516 × 10⁻⁶ cm²
1 square mil equals 6.4516 × 10⁻⁶ square centimeters
To convert square mils to square centimeters, multiply the value by 6.4516 × 10⁻⁶. To go the other way, multiply square centimeters by 155,000 to get square mils.