Circumference of a 20 Centimeter Diameter Circle

What is the circumference of a circle with a diameter of 20 cm? How far around is a circle that is 20 centimeters across?

Diameter

meters

Units

Circumference of a 20cm 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
20.0 cm	62.83	24.74	2.061
20.1 cm	63.15	24.86	2.072
20.2 cm	63.46	24.98	2.082
20.3 cm	63.77	25.11	2.092
20.4 cm	64.09	25.23	2.103
20.5 cm	64.40	25.36	2.113
20.6 cm	64.72	25.48	2.123
20.7 cm	65.03	25.60	2.134
20.8 cm	65.35	25.73	2.144
20.9 cm	65.66	25.85	2.154
21.0 cm	65.97	25.97	2.164
21.1 cm	66.29	26.10	2.175
21.2 cm	66.60	26.22	2.185
21.3 cm	66.92	26.34	2.195
21.4 cm	67.23	26.47	2.206
21.5 cm	67.54	26.59	2.216
21.6 cm	67.86	26.72	2.226
21.7 cm	68.17	26.84	2.237
21.8 cm	68.49	26.96	2.247
21.9 cm	68.80	27.09	2.257
22.0 cm	69.12	27.21	2.268
22.1 cm	69.43	27.33	2.278
22.2 cm	69.74	27.46	2.288
22.3 cm	70.06	27.58	2.298
22.4 cm	70.37	27.71	2.309

Diameter	cm	in	ft
22.5 cm	70.69	27.83	2.319
22.6 cm	71.00	27.95	2.329
22.7 cm	71.31	28.08	2.340
22.8 cm	71.63	28.20	2.350
22.9 cm	71.94	28.32	2.360
23.0 cm	72.26	28.45	2.371
23.1 cm	72.57	28.57	2.381
23.2 cm	72.88	28.69	2.391
23.3 cm	73.20	28.82	2.402
23.4 cm	73.51	28.94	2.412
23.5 cm	73.83	29.07	2.422
23.6 cm	74.14	29.19	2.432
23.7 cm	74.46	29.31	2.443
23.8 cm	74.77	29.44	2.453
23.9 cm	75.08	29.56	2.463
24.0 cm	75.40	29.68	2.474
24.1 cm	75.71	29.81	2.484
24.2 cm	76.03	29.93	2.494
24.3 cm	76.34	30.06	2.505
24.4 cm	76.65	30.18	2.515
24.5 cm	76.97	30.30	2.525
24.6 cm	77.28	30.43	2.536
24.7 cm	77.60	30.55	2.546
24.8 cm	77.91	30.67	2.556
24.9 cm	78.23	30.80	2.566