Circumference of a 100 Centimeter Diameter Circle

What is the circumference of a circle with a diameter of 100 cm? How far around is a circle that is 100 centimeters across?

Diameter

meters

Units

Circumference of a 100cm diameter circle

results may be rounded

The circumference of a circle is pi times its diameter.

Circumference = π * Diameter

The diameter of a circle is the distance from one edge to the other, passing through the center. It is twice the radius.

Circle Circumference by Diameter

results may be rounded

Diameter	cm	in	ft
100.0 cm	314.2	123.7	10.31
100.1 cm	314.5	123.8	10.32
100.2 cm	314.8	123.9	10.33
100.3 cm	315.1	124.1	10.34
100.4 cm	315.4	124.2	10.35
100.5 cm	315.7	124.3	10.36
100.6 cm	316.0	124.4	10.37
100.7 cm	316.4	124.6	10.38
100.8 cm	316.7	124.7	10.39
100.9 cm	317.0	124.8	10.40
101.0 cm	317.3	124.9	10.41
101.1 cm	317.6	125.0	10.42
101.2 cm	317.9	125.2	10.43
101.3 cm	318.2	125.3	10.44
101.4 cm	318.6	125.4	10.45
101.5 cm	318.9	125.5	10.46
101.6 cm	319.2	125.7	10.47
101.7 cm	319.5	125.8	10.48
101.8 cm	319.8	125.9	10.49
101.9 cm	320.1	126.0	10.50
102.0 cm	320.4	126.2	10.51
102.1 cm	320.8	126.3	10.52
102.2 cm	321.1	126.4	10.53
102.3 cm	321.4	126.5	10.54
102.4 cm	321.7	126.7	10.55

Diameter	cm	in	ft
102.5 cm	322.0	126.8	10.56
102.6 cm	322.3	126.9	10.58
102.7 cm	322.6	127.0	10.59
102.8 cm	323.0	127.1	10.60
102.9 cm	323.3	127.3	10.61
103.0 cm	323.6	127.4	10.62
103.1 cm	323.9	127.5	10.63
103.2 cm	324.2	127.6	10.64
103.3 cm	324.5	127.8	10.65
103.4 cm	324.8	127.9	10.66
103.5 cm	325.2	128.0	10.67
103.6 cm	325.5	128.1	10.68
103.7 cm	325.8	128.3	10.69
103.8 cm	326.1	128.4	10.70
103.9 cm	326.4	128.5	10.71
104.0 cm	326.7	128.6	10.72
104.1 cm	327.0	128.8	10.73
104.2 cm	327.4	128.9	10.74
104.3 cm	327.7	129.0	10.75
104.4 cm	328.0	129.1	10.76
104.5 cm	328.3	129.3	10.77
104.6 cm	328.6	129.4	10.78
104.7 cm	328.9	129.5	10.79
104.8 cm	329.2	129.6	10.80
104.9 cm	329.6	129.7	10.81