Square Meters to Square Micrometers: the quick answer
1 m² = 1,000,000,000,000 µm²
1 square meter equals 1,000,000,000,000 square micrometers
To convert square meters to square micrometers, multiply the value by 1,000,000,000,000. To go the other way, multiply square micrometers by 1 × 10⁻¹² to get square meters.