In geometry, the circumference (from Latin circumferēns 'carrying around, circling') is the perimeter of a circle or ellipse. The circumference is the arc length of the circle, as if it were opened up and straightened out to a line segment. [1]

Use this free circumference calculator to find the area, circumference and diameter of a circle.

circumference — / (AmE /sɝːˈkʌmfrəns/ – BrE /səˈkʌmfərəns/)/ — Bir çemberin çevre uzunluğunu veya dairesel bir şeyin etrafını dolaşan ölçüyü ifade eden teknik terimdir.

Defined as the minimum circumference taken at the distal shaft with a cloth tape following the contour of the bone.

The circumference of a circle is the distance around the boundary of the circle. It is the same as calculating the perimeter of any polygon such as triangle, square, and rectangle.

[ U ] Draw a circle 5 inches in circumference. A circumference is also the distance around the widest part of a round object, or a line enclosing a circular space.

The formula for circumference is based on the constant π (pi), which is an irrational number approximately equal to 3.14159. π is the ratio of the circumference to the diameter of any circle.

Circumference of a circle is the length of the boundary surrounding the circle. The Circumference of a circle is equal to twice the product of the numerical constant π and the radius 'r'.

In the work, the term "circumference" is used to mean the perimeter of a circle. However, some authors allow "circumference" to refer more generally to the distance or arc length around an arbitrary closed object (sometimes restricted to a closed plane figure such as a lamina).

Earth 's circumference is a measure of Earth's figure, approximately an oblate spheroid with an equatorial bulge (or planetary flattening) due to Earth's rotation.