| 1 mm² = | 0.01 cm² |
| 1 mm² = | 0.00155 sq in |
| 1 mm² = | 0.0001 dm² |
| 1 mm² = | 0.0000108 sq ft |
| 1 mm² = | 0.00000120 sq yd |
| 1 mm² = | 0.000001 m² |
| 1 mm² = | 0.00000001 a |
| 1 mm² = | 0.000000000247 acre |
| 1 mm² = | 0.0000000001 ha |
| 1 mm² = | 0.000000000001 km² |
| 1 mm² = | 0.000000000000386 sq mi |