Circumference of a 30 Centimeter Diameter Circle

What is the circumference of a circle with a diameter of 30 cm? How far around is a circle that is 30 centimeters across?

Diameter

meters

Units

Circumference of a 30cm 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
30.0 cm	94.25	37.11	3.092
30.1 cm	94.56	37.23	3.102
30.2 cm	94.88	37.35	3.113
30.3 cm	95.19	37.48	3.123
30.4 cm	95.50	37.60	3.133
30.5 cm	95.82	37.72	3.144
30.6 cm	96.13	37.85	3.154
30.7 cm	96.45	37.97	3.164
30.8 cm	96.76	38.09	3.175
30.9 cm	97.08	38.22	3.185
31.0 cm	97.39	38.34	3.195
31.1 cm	97.70	38.47	3.205
31.2 cm	98.02	38.59	3.216
31.3 cm	98.33	38.71	3.226
31.4 cm	98.65	38.84	3.236
31.5 cm	98.96	38.96	3.247
31.6 cm	99.27	39.08	3.257
31.7 cm	99.59	39.21	3.267
31.8 cm	99.90	39.33	3.278
31.9 cm	100.2	39.46	3.288
32.0 cm	100.5	39.58	3.298
32.1 cm	100.8	39.70	3.309
32.2 cm	101.2	39.83	3.319
32.3 cm	101.5	39.95	3.329
32.4 cm	101.8	40.07	3.339

Diameter	cm	in	ft
32.5 cm	102.1	40.20	3.350
32.6 cm	102.4	40.32	3.360
32.7 cm	102.7	40.44	3.370
32.8 cm	103.0	40.57	3.381
32.9 cm	103.4	40.69	3.391
33.0 cm	103.7	40.82	3.401
33.1 cm	104.0	40.94	3.412
33.2 cm	104.3	41.06	3.422
33.3 cm	104.6	41.19	3.432
33.4 cm	104.9	41.31	3.443
33.5 cm	105.2	41.43	3.453
33.6 cm	105.6	41.56	3.463
33.7 cm	105.9	41.68	3.473
33.8 cm	106.2	41.81	3.484
33.9 cm	106.5	41.93	3.494
34.0 cm	106.8	42.05	3.504
34.1 cm	107.1	42.18	3.515
34.2 cm	107.4	42.30	3.525
34.3 cm	107.8	42.42	3.535
34.4 cm	108.1	42.55	3.546
34.5 cm	108.4	42.67	3.556
34.6 cm	108.7	42.79	3.566
34.7 cm	109.0	42.92	3.577
34.8 cm	109.3	43.04	3.587
34.9 cm	109.6	43.17	3.597