square millimeters to square inches
Convert square millimeter to square inch — instant, free, with the formula shown.
1 mm²=0.00155 in²
How to convert square millimeter to square inch
To convert square millimeter to square inch, multiply by 0.00155:
in² = mm² × 0.00155
For example, 10 mm² × 0.00155 = 0.0155 in².
mm² to in² conversion table
| square millimeters (mm²) | square inches (in²) |
|---|---|
| 1 mm² | 0.00155 in² |
| 2 mm² | 0.0031 in² |
| 5 mm² | 0.00775 in² |
| 10 mm² | 0.0155 in² |
| 25 mm² | 0.03875 in² |
| 50 mm² | 0.0775 in² |
| 100 mm² | 0.155 in² |
| 250 mm² | 0.387501 in² |
| 500 mm² | 0.775002 in² |
| 1000 mm² | 1.550003 in² |
Other square millimeter conversions
Convert to square inch from another unit
mm² to in² — frequently asked
How many square inches are in 1 square millimeter?
1 square millimeter = 0.00155 square inches (mm² × 0.00155 = in²).
What is the formula to convert square millimeter to square inch?
Multiply your square millimeter value by 0.00155 to get square inch.
How do I convert 10 square millimeters to square inches?
10 mm² = 0.0155 in². For 100 mm² the answer is 0.155 in². Use the calculator on this page for any other value.