1 Square Millimeters to Square Inches
Convert 1 square millimeters (mm²) to square inches (in²) with formulas, examples, and conversion tables.
mm²
in²
1 mm² = 0.00155 in²
Full precision:0.00155 in²
Step-by-Step Solution
To convert 1 square millimeters to square inches, we divide by 645.16 because one square inch equals exactly 645.16 square millimeters.
1 square inch = 645.16 square millimeters
Since there are 645.16 square millimeters in every square inch, we divide our value by this factor:
1 ÷ 645.16 = 0.00155 square inches
So 1 square millimeters = 0.00155 square inches.
Quick check: 0.00155 × 645.16 = 1 square millimeters
Square Millimeters to Square Inches Conversion Table
| Square Millimeters | Square Inches |
|---|---|
| 1 mm² | 0.00155 in² |
| 2 mm² | 0.0031 in² |
| 3 mm² | 0.00465 in² |
| 4 mm² | 0.0062 in² |
| 5 mm² | 0.00775 in² |
| 10 mm² | 0.0155 in² |
| 20 mm² | 0.031 in² |
| 50 mm² | 0.0775 in² |
| 100 mm² | 0.155 in² |
1 Square Millimeters in Other Units
| Unit | 1 mm² = |
|---|---|
| Square Millimeters to Square Kilometers | 1e-12 km² |
| Square Millimeters to Hectares | 1e-10 ha |
| Square Millimeters to Square Meters | 0.000001 m² |
| Square Millimeters to Square Centimeters | 0.01 cm² |
| Square Millimeters to Square Miles | 3.861e-13 mi² |
| Square Millimeters to Acres | 2.4711e-10 ac |
| Square Millimeters to Square Yards | 0.0000012 yd² |
| Square Millimeters to Square Feet | 0.00001076 ft² |
| Square Millimeters to Square Inches | 0.00155 in² |
| Square Millimeters to Ares | 1e-8 a |
| Square Millimeters to Barns | 1e+22 b |