# Circular inch conversions

area conversions » circular inch conversionsThe circular inch conversion selector above selects the area/surface measurement unit to convert to starting from circular inches (circ in). To make a conversion starting from a unit of area other than circular inch, simply click on the "Reset" button.

## What is circular inch?

The **circular inch** is a unit of area in the Imperial and US customary systems of units
equal to 5.067075x10-4 square meters (1 circular inch = 5.067075x10-4
m2), the standard derived unit of area in the International System of Units (SI). It is also equal to 5.067075
square centimeters (cm2), or 506.7075 square millimeters (mm2), or
506.707.5x106 square micrometers (μm2) or 5.067075x1014 square nanometers (nm2) (units of area in the SI), or about 785,398.196 square mils,
or 0.785398196 square inches (sq in) or 0.00545415414 square feet (sq ft), which are Imperial / US customary units of area.

The circular inch is an Imperial / US customary unit of area. The inch is a unit of length in the Imperial and US customary systems of units. An area of 1.0 circular inch is the area of a circle that is 1.0 inch in diameter.

The conversion formula between square inches and circular inches:

Square Inches = π/4 × Circular Inches

The circular inch is used to specify the area of the cross section of a cable or wire.

*Symbol:*

circ in

*Plural:*

circular inches

## Circular inch conversions: direct links

A compehensive list with conversions from circular inches to other (metric, imperial, or customary) area and surface measurement units is presented below.

- circular inch to acre (circ in to ac)
- circular inch to acre (US survey) (circ in to ac)
- circular inch to are (circ in to a)
- circular inch to carreau
- circular inch to centiare (circ in to ca)
- circular inch to circular mil (circ in to cmil)
- circular inch to decare (circ in to daa)
- circular inch to dunam
- circular inch to hectare (circ in to ha)
- circular inch to mu
- circular inch to ping
- circular inch to pyong
- circular inch to rood (circ in to ro)
- circular inch to section
- circular inch to square centimeter (circ in to sq cm)
- circular inch to square chain (circ in to sq ch)
- circular inch to square decameter (circ in to sq dam)
- circular inch to square decimeter (circ in to sq dm)
- circular inch to square foot (circ in to sq ft)
- circular inch to square hectometer (circ in to sq hm)
- circular inch to square inch (circ in to sq in)
- circular inch to square kilometer (circ in to sq km)
- circular inch to square meter (circ in to sq m)
- circular inch to square micrometer (circ in to sq μm)
- circular inch to square mil (circ in to sq mil)
- circular inch to square mile (circ in to sq mi)
- circular inch to square millimeter (circ in to sq mm)
- circular inch to square nanometer (circ in to sq nm)
- circular inch to square yard (circ in to sq yd)
- circular inch to stremma