Convert Square Millimeter to Square Inch (mm² to in²)

Square Meter (m²)
Square Kilometer (km²)
Square Centimeter (cm²)
Square Millimeter (mm²)
Square Foot (ft²)
Square Yard (yd²)
Square Inch (in²)
Square Mile (mi²)
Acre (ac)
Hectare (ha)
Square Rod (rd²)
Square Chain (ch²)
Rood (rood)
Township (twp)
Section (section)
Homestead (homestead)
Square Furlong (fur²)
Square Perch (perch²)
Square Pole (pole²)
Square Link (link²)
Square Guntha (guntha)
Square Bigha (bigha)
Square Katha (katha)
Square Chatak (chatak)
Square Dhur (dhur)
Square Kanal (kanal)
Square Marla (marla)
Square Sarsahi (sarsahi)
Square Gaj (gaj)
Square Yard (Indian) (yd²)
Square Foot (Indian) (ft²)
Square Inch (Indian) (in²)
Square Meter (m²)
Square Kilometer (km²)
Square Centimeter (cm²)
Square Millimeter (mm²)
Square Foot (ft²)
Square Yard (yd²)
Square Inch (in²)
Square Mile (mi²)
Acre (ac)
Hectare (ha)
Square Rod (rd²)
Square Chain (ch²)
Rood (rood)
Township (twp)
Section (section)
Homestead (homestead)
Square Furlong (fur²)
Square Perch (perch²)
Square Pole (pole²)
Square Link (link²)
Square Guntha (guntha)
Square Bigha (bigha)
Square Katha (katha)
Square Chatak (chatak)
Square Dhur (dhur)
Square Kanal (kanal)
Square Marla (marla)
Square Sarsahi (sarsahi)
Square Gaj (gaj)
Square Yard (Indian) (yd²)
Square Foot (Indian) (ft²)
Square Inch (Indian) (in²)
Convert Square Inch to Square Millimeter

1 square millimeter = 0.00155 square inch.

To convert square millimeter to square inch, multiply the value by 0.00155.

Example: 20 mm² = 0.031 in².

Square Millimeter to Square Inch conversion table

Square MillimeterSquare Inch
1 mm²0.00155 in²
2 mm²0.0031 in²
3 mm²0.00465 in²
4 mm²0.0062 in²
5 mm²0.00775 in²
10 mm²0.0155 in²
20 mm²0.031 in²
25 mm²0.03875 in²
50 mm²0.0775 in²
100 mm²0.155 in²
500 mm²0.775 in²
1,000 mm²1.55 in²

Related area conversions

Frequently asked questions

How many square inch are in a square millimeter?
There are 0.00155 square inch in 1 square millimeter.
How do I convert square millimeter to square inch?
To convert square millimeter to square inch, multiply the value by 0.00155.