Square Mils to Ares: the quick answer
1 mil² = 6.4516 × 10⁻¹² a
1 square mil equals 6.4516 × 10⁻¹² ares
To convert square mils to ares, multiply the value by 6.4516 × 10⁻¹². To go the other way, multiply ares by 155,000,000,000 to get square mils.