Circles - Circumferences and Areas

Circumferences and areas of circles with diameters in inches. Calculate circle properties using diameter measurements.

Calculator

Inputs

Diameter (inches)

Results

Circumference-- inches

Area-- in²

Diameter (in)	Circumference (in)	Area (in²)
0.015625	0.049	0.00019
0.03125	0.098	0.00077
0.046875	0.147	0.0017
0.0625	0.196	0.0031
0.09375	0.295	0.0069
0.125	0.393	0.012
0.15625	0.491	0.019
0.1875	0.589	0.028
0.21875	0.687	0.038
0.25	0.785	0.049
0.28125	0.884	0.062
0.3125	0.982	0.077
0.34375	1.08	0.093
0.375	1.18	0.11
0.40625	1.28	0.13
0.4375	1.37	0.15
0.46875	1.47	0.17
0.5	1.57	0.2
0.53125	1.67	0.22
0.5625	1.77	0.25
0.59375	1.87	0.28
0.625	1.96	0.31
0.65625	2.06	0.34
0.6875	2.16	0.37
0.71875	2.26	0.41
0.75	2.36	0.44
0.78125	2.45	0.48
0.8125	2.55	0.52
0.84375	2.65	0.56
0.875	2.75	0.6
0.90625	2.85	0.65
0.9375	2.95	0.69
0.96875	3.04	0.74
1.0625	3.34	0.89
1.125	3.53	0.99
1.1875	3.73	1.11
1.25	3.93	1.23
1.3125	4.12	1.35
1.375	4.32	1.48
1.4375	4.52	1.62
1.5	4.71	1.77
1.5625	4.91	1.92
1.625	5.11	2.07
1.6875	5.3	2.24
1.75	5.5	2.41
1.8125	5.69	2.58
1.875	5.89	2.76
1.9375	6.09	2.95
2.0625	6.48	3.34
2.125	6.68	3.55
2.1875	6.87	3.76
2.25	7.07	3.98
2.3125	7.26	4.2
2.375	7.46	4.43
2.4375	7.66	4.67
2.5	7.85	4.91
2.5625	8.05	5.16
2.625	8.25	5.41
2.6875	8.44	5.67
2.75	8.64	5.94
2.8125	8.84	6.21
2.875	9.03	6.49
2.9375	9.23	6.78
3.0625	9.62	7.37
3.125	9.82	7.67
3.1875	10.01	7.98
3.25	10.21	8.3
3.3125	10.41	8.62
3.375	10.6	8.95
3.4375	10.8	9.28
3.5	11	9.62
3.5625	11.19	9.97
3.625	11.39	10.32
3.6875	11.58	10.68
3.75	11.78	11.04
3.8125	11.98	11.42
3.875	12.17	11.79
3.9375	12.37	12.18
4.125	12.96	13.36
4.1875	13.16	13.77
4.25	13.35	14.19
4.3125	13.55	14.61
4.375	13.74	15.03
4.4375	13.94	15.47
4.5	14.14	15.9
4.5625	14.33	16.35
4.625	14.53	16.8
4.6875	14.73	17.26
4.75	14.92	17.72
4.8125	15.12	18.19
4.875	15.32	18.67
4.9375	15.51	19.15
5.125	16.1	20.63
5.1875	16.3	21.14
5.25	16.49	21.65
5.3125	16.69	22.17
5.375	16.89	22.69
5.4375	17.08	23.22
5.5	17.28	23.76
5.5625	17.48	24.3
5.625	17.67	24.85
5.6875	17.87	25.41
5.75	18.06	25.97
5.8125	18.26	26.53
5.875	18.46	27.11
5.9375	18.65	27.69
6.125	19.24	29.46
6.25	19.63	30.68
6.375	20.03	31.92
6.5	20.42	33.18
6.625	20.81	34.47
6.75	21.21	35.78
6.875	21.6	37.12
7.125	22.38	39.87
7.25	22.78	41.28
7.375	23.17	42.72
7.5	23.56	44.18
7.625	23.95	45.66
7.75	24.35	47.17
7.875	24.74	48.71
8.125	25.53	51.85
8.25	25.92	53.46
8.375	26.31	55.09
8.5	26.7	56.75
8.625	27.1	58.43
8.75	27.49	60.13
8.875	27.88	61.86
9.125	28.67	65.4
9.25	29.06	67.2
9.375	29.45	69.03
9.5	29.85	70.88
9.625	30.24	72.76
9.75	30.63	74.66
9.875	31.02	76.59
10.125	31.81	80.52
10.25	32.2	82.52
10.375	32.59	84.54
10.5	32.99	86.59
10.625	33.38	88.66
10.75	33.77	90.76
10.875	34.16	92.89