nversion-website.Square inch conversions
The square inch conversion selector here selects the area/surface measurement unit to convert to starting from square inches (sq in). To make a conversion starting from a unit of area other than square inch, simply click on the "Reset" button.
About square inch
The square inch is a unit of area in the Imperial and US customary systems of units equal to 6.4516 × 10-4 square meter (1 sq in = 6.4516 × 10-4 m2), the standard derived unit of area in the International System of Units (SI).
One square inch (sq in) is also equal to 6.4516 square centimeters (cm2), or 645.16 square millimeters (mm2) or 6.4516 × 108 square micrometers (μm2) (units of area in the SI), or 1.273239 circular inches, or 7.71604938 × 10-4 square yards (sq yd) or 0.00694444444 square feet (sq ft), which are Imperial / US customary units of area.
The square inch (sq in) is an Imperial / US customary unit of area. The inch (in) is a unit of length in the Imperial and US customary systems of units. An area of 1.0 square inch is the area of a square that is 1.0 inch on each side.
The conversion formula between square inches and circular inches:
Square Inches = π/4 × Circular Inches
Symbol: sq in
Plural: square inches
Square inch conversions: a list with conversions from square inches to other (metric, imperial, or customary) area and surface measurement units is presented below.
- square inch to acre (sq in to ac)
- square inch to acre (US survey) (sq in to ac)
- square inch to are (sq in to a)
- square inch to carreau
- square inch to centiare (sq in to ca)
- square inch to circular inch (sq in to circ in)
- square inch to circular mil (sq in to cmil)
- square inch to decare (sq in to daa)
- square inch to dunam
- square inch to hectare (sq in to ha)
- square inch to mu
- square inch to ping
- square inch to pyong
- square inch to rood (sq in to ro)
- square inch to section
- square inch to square centimeter (sq in to sq cm)
- square inch to square chain (sq in to sq ch)
- square inch to square decameter (sq in to sq dam)
- square inch to square decimeter (sq in to sq dm)
- square inch to square foot (sq in to sq ft)
- square inch to square hectometer (sq in to sq hm)
- square inch to square kilometer (sq in to sq km)
- square inch to square meter (sq in to sq m)
- square inch to square micrometer (sq in to sq μm)
- square inch to square mil (sq in to sq mil)
- square inch to square mile (sq in to sq mi)
- square inch to square millimeter (sq in to sq mm)
- square inch to square nanometer (sq in to sq nm)
- square inch to square yard (sq in to sq yd)
- square inch to stremma