Ares to Square Micrometers: the quick answer
1 a = 100,000,000,000,000 µm²
1 are equals 100,000,000,000,000 square micrometers
To convert ares to square micrometers, multiply the value by 100,000,000,000,000. To go the other way, multiply square micrometers by 1 × 10⁻¹⁴ to get ares.