Circumference of a 18 Foot Diameter Circle

What is the circumference of a circle with a diameter of 18 ft? How far around is a circle that is 18 feet across?
Diameter
cm
Diameter
ft
in
Diameter
meters
Units
Circumference of a 18′ diameter circle
56.549feet
678.58inches
56′ 6.58″feet and inches
17.236meters
1,723.6centimeters
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.

Diameter
Circle Circumference by Diameter
results may be rounded
Diameter ft in m
18′0″ 56.55 678.6 17.24
18′1″ 56.81 681.7 17.32
18′2″ 57.07 684.9 17.40
18′3″ 57.33 688.0 17.48
18′4″ 57.60 691.2 17.56
18′5″ 57.86 694.3 17.64
18′6″ 58.12 697.4 17.71
18′7″ 58.38 700.6 17.79
18′8″ 58.64 703.7 17.87
18′9″ 58.90 706.9 17.95
18′10″ 59.17 710.0 18.03
18′11″ 59.43 713.1 18.11