Circumference of a 18 Inch Diameter Circle
What is the circumference of a circle with a diameter of 18 in? How far around is a circle that is 18 inches across?
Diameter
cm
Diameter
ft
in
Diameter
meters
Units
Circumference of a 18″ diameter circle
| 56.549 | inches |
| 4.7124 | feet |
| 4′ 8.549″ | feet and inches |
| 1.4363 | meters |
| 143.63 | centimeters |
results may be rounded
Circumference of a Circle Formula
The circumference of a circle is pi times its diameter.
Circumference = π * Diameter
Diameter of a Circle
The diameter of a circle is the distance from one edge to the other, passing through the center. It is twice the radius.