Area
Square millimetres to Square inches Converter
1 mm² = 0.001550 in²
0.00155 in²
1 mm² = 0.00155 in²
Square millimetres to Square inches conversion table
| Square millimetres (mm²) | Square inches (in²) |
|---|---|
| 1 | 0.001550 |
| 2 | 0.003100 |
| 5 | 0.007750 |
| 10 | 0.0155 |
| 25 | 0.03875 |
| 50 | 0.0775 |
| 100 | 0.155 |
| 250 | 0.387501 |
| 500 | 0.775002 |
| 1,000 | 1.55 |
How to convert square millimetres to square inches
Multiply the number of square millimetres by 0.001550 to get the equivalent in square inches. The full converter above handles decimals, negative values and the reverse direction automatically.
Need the other way? Convert square inches to square millimetres.
More square millimetres conversions
Square millimetres → Square centimetres
1 mm² = 0.01000 cm²
Square millimetres → Square metres
1 mm² = 0.000001000 m²
Square millimetres → Hectares
1 mm² = 1.000e-10 ha
Square millimetres → Square kilometres
1 mm² = 1.000e-12 km²
Square millimetres → Square feet
1 mm² = 0.00001076 ft²
Square millimetres → Square yards
1 mm² = 0.000001196 yd²
Square millimetres → Acres
1 mm² = 2.471e-10 ac
Square millimetres → Square miles
1 mm² = 3.861e-13 mi²