Sterling Circles Chart
©
Jeffrey Herman
Example: 4" diameter sterling sheet x 18 gauge = 2.77 troy ounces
Sterling Circles Chart
© Jeffrey Herman
Example: 4" diameter sterling sheet x 18 gauge = 2.77 troy ounces
Dia.
15g
(.057)16g
(.051)17g
(.045)18g
(.040)19g
(.036)20g
(.032)21g
(.028)22g
(.025)23g
(.022)24g
(.020)25g
(.018)26g
(.016)
½"
.0614
.0547
.0487
.0433
.0386
.0344
.0306
.0273
.0243
.0216
.0193
.0171
¾"
.138
.123
.109
.0975
.0868
.0773
.0689
.0613
.0546
.0486
.0433
.0386
1"
.245
.219
.195
.173
.154
.137
.122
.109
.0971
.0865
.0770
.0686
1¼"
.384
.342
.304
.271
.241
.215
191
.170
.152
.135
.120
.107
1½"
.552
.492
.438
.390
.347
.309
.275
.245
.218
.195
.173
.154
1¾"
.752
.669
.596
.531
.473
.421
.375
.334
.297
.265
.236
.210
2"
.982
.874
.779
.693
.618
.550
.490
.436
.388
.346
.308
.274
2¼"
1.24
1.11
.985
.878
.782
.696
.620
.552
.492
.438
.390
.347
2½"
1.53
1.37
1.22
1.08
.965
.859
.765
.681
.607
.540
.481
429
2¾"
1.86
1.65
1.47
1.31
1.17
1.04
926
824
734
654
582
519
3"
2.21
1.97
1.75
1.56
1.39
1.24
1.10
981
874
778
693
617
3¼"
2.59
2.31
2.06
1.83
1.63
1.45
1.29
1.15
1.03
913
813
724
3½"
3.01
2.68
2.38
2.12
1.89
1.68
1.50
1.34
1.19
1.06
943
840
3¾"
3.45
3.07
2.74
2.44
2.17
1.93
1.72
1.53
1.37
1.22
1.08
.964
4"
3.93
3.50
3.11
2.77
2.47
2.20
1.96
1.74
1.55
1.38
1.23
1.10
4¼"
4.43
3.95
3.52
3.13
2.79
2.48
2.21
1.97
1.75
1.56
1.39
1.24
4½"
4.97
4.43
3.94
3.51
3.13
2.78
2.48
2.21
1.97
1.75
1.56
1.39
4¾"
5.54
4.93
4.39
3.91
3.48
3.10
2.76
2.46
2.19
1.95
1.74
1.55
5"
6.14
5.47
4.87
4.33
3.86
3.44
3.06
2.73
2.43
2.16
1.93
1.71
5¼"
6.77
6.03
5.37
4.78
4.26
3.79
3.37
3.00
2.68
2.38
2.12
1.89
5½"
7.43
6.61
5.89
5.24
4.67
4.16
3.70
3.30
2.94
2.62
2.33
2.07
5¾"
8.12
7.23
6.44
5.73
5.10
4.55
4.05
3.60
3.21
2.86
2.55
2.27
6"
8.84
7.87
7.01
6.24
5.56
4.95
4.41
3.92
3.50
3.11
2.77
2.47
6¼"
9.59
8.54
7.60
6.77
6.03
5.37
4.78
4.26
3.79
3.38
3.01
2.68
6½"
10.4
9.24
8.22
7.32
6.52
5.81
5.17
4.61
4.10
3.65
3.25
2.90
6¾"
11.2
9.96
8.87
7.90
7.03
6.26
5.58
4.97
4.42
3.94
3.51
3.12
7"
12.0
10.7
9.54
8.49
7.56
6.74
6.00
5.34
4.76
4.24
3.77
3.36
7¼"
12.9
11.5
10.2
9.11
8.11
7.23
6.43
5 73
5.10
4.54
4.05
3.60
7½"
13.8
12.3
10.9
9.75
8.68
7.73
6.89
6.13
5.46
4.86
4.33
3.86
7¾"
14.7
13.1
11.7
10.4
9.27
8.26
7.35
6.55
5.83
5.19
4.62
4.12
8"
15.7
14.0
12.5
11.1
9.88
8.80
7.84
6.98
6.21
5.53
4.93
4.39
8¼"
16.7
14.9
13.2
11.8
10.5
9.36
8.33
7.42
6.61
5.88
5.24
4.67
8½"
17.7
15.8
14.1
12.5
11.2
9.93
8.85
7.88
7.01
6.25
5.56
4.95
8¾"
18.8
16.7
14.9
13.3
11.8
10.5
9.37
8.35
7.43
6.62
5.90
5.25
9"
19.9
17.7
15.8
14.0
12.5
11.1
9.92
8.83
7.86
7.00
6.24
5.55
9¼"
21.0
18.7
16.7
14.8
13.2
11.8
10.5
9.33
8.31
7.40
6.59
5.87
9½"
22.0
19.7
17.6
15.6
13.9
12.4
1 1.0
9.84
8.76
7.80
6.95
6.19
9¾"
23.3
20.8
18.5
16.5
14.7
13.1
11.6
10.4
9.23
8.22
7.32
6.52
10"
24.5
21.9
19.5
17.3
15.4
13.7
12.2
10.9
9.71
8.65
7.70
6.86
10¼"
25.8
23.0
20.5
18.2
16.2
14.1
12.9
1 1.5
10.2
9.08
8.09
7.20
10½"
27.1
24.1
21.5
19.1
17.0
15.2
13.5
12.0
10.7
9.53
8.49
7.56
10¾"
28.4
25.3
22.5
20.0
17.8
15.9
14.1
12.6
11.2
9.99
8.90
7.92
11"
29.7
26.5
23.6
21.0
18.7
16.6
14.8
13.2
11.7
10.5
9.32
8.30
11¼"
31.1
27.7
24.6
21.9
19.5
17.4
15.5
13.8
12.3
10.9
9.75
8.68
11½"
32.5
28.9
25.7
22.9
20.4
18.2
16.2
14.4
12.8
11.4
10.2
9.07
11¾"
33.9
30.2
26.9
23.9
21.3
19.0
16.9
15.0
13.4
11.9
10.6
9.47
12"
35.3
31.5
28.0
25.0
22.2
19.8
17.6
15.7
14.0
12.5
11.1
9.87
12¼"
36.8
32.8
29.2
26.0
23.2
20.6
18.4
16.4
14.6
13.0
11.6
10.3
12½"
38.4
34.2
30.4
27.1
24.1
21.5
19.1
17.0
15.2
13.5
12.0
10.7
12¾"
39.9
35.5
31.6
28.2
25.1
22.3
19.9
47.7
15.8
14.1
12.5
11.1
13"
41.5
36.9
32.9
29.3
26.1
23.2
20.7
18.4
16.4
14.6
13.0
11.6
13¼"
43.1
38.1
34.2
30.4
27.1
24.1
21.5
19.1
17.0
15.2
13.5
12.0
13½"
41.7
39.8
35.5
31.6
28.1
25.1
22.3
19.9
17.7
15.8
14.0
12.5
13¾"
46.4
41.3
36.8
32.8
29.2
26.0
23.1
20.6
18.4
16.3
14.6
13.0
14"
48.1
42.8
38.2
34.0
30.3
26.9
24.0
21.4
19.0
16.9
15.1
13.4
14¼"
49.8
41.4
39.5
35.2
31.3
27.9
24.9
22.1
19.7
17.6
15.6
13.9
14½"
51.6
46.0
40.9
36.4
32.5
28.9
25.7
22.9
20.4
18.2
16.2
14.4
14¾"
53.4
47.6
42.3
37.7
33.6
29.9
26.6
23.7
21.1
18.8
16.8
14.9
15"
55.2
49.2
43.8
39.0
34.7
30.9
27.5
24.5
21.8
19.5
17.3
15.4
15¼"
57.1
50.8
45.3
40.3
35.9
32.0
28.5
25.4
22.6
20.1
17.9
15.9
15½"
59.0
52.5
46.8
41.6
37.1
33.0
29.4
26.2
23.3
20.8
18.5
16.5
15¾"
60.9
54.2
48.3
43.0
38.3
34.1
30.4
27.0
24.1
21.4
19.1
17.0
16"
62.8
56.0
49.8
44.4
39.5
35.2
31.3
27.9
24.9
22.1
19.7
17.6
16¼"
64.8
57.7
51.4
45.8
40.8
36.3
32.3
28.8
25.6
22.8
20.3
18.1
16½"
66.8
59.5
53.0
47.2
42.0
37.4
33.3
29.7
26.4
23.5
21.0
18.7
16¾"
68.9
61.3
51.6
48.6
43.3
38.6
34.3
30.6
27.2
24.3
21.6
19.2
17"
70.9
63.2
56.3
50.1
44.6
39.7
35.4
31.5
28.1
25.0
22.3
19.8
17¼"
73.0
65.0
57.9
51.6
45.9
40.9
36.4
32.4
28.9
25.7
22.9
20.4
17½"
75.2
66.9
59.6
53.1
47.3
42.1
37.5
33.4
29.7
26.5
23.6
21.0
17¾"
77.3
68.9
61.3
54.6
48.6
43.3
38.6
34.3
30.6
27.2
24.3
21.6
18"
79.5
70.8
63.1
56.2
50.0
44.5
39.7
35.3
31.5
28.0
24.9
22.2
18¼"
81.8
72.8
64.8
57.7
51.4
45.8
40.8
36.3
32.3
28.8
25.6
22.8
18½"
84.0
74.8
66.6
59.3
52.8
47.1
41.9
37.3
33.2
29.6
26.4
23.5
18¾"
86.3
76.9
68.4
60.9
54.3
48.3
43.0
38.3
34.1
30.4
27.1
24.1
19"
88.6
78.9
70.3
62.6
55.7
49.6
44.2
39.4
35.0
31.2
27.8
24.8
19¼"
91.0
81.0
72.1
64.2
57.2
50.9
45.4
40.4
36.0
32.0
28.5
25.4
19½"
93.3
83.1
74.0
65.9
58.7
52.3
46.6
41.4
36.9
32.9
29.3
26.1
19¾"
95.7
85.3
75.9
67.6
60.2
53.6
47.8
42.5
37.9
33.7
30.0
26.7
20"
98.2
87.4
77.9
69.3
61.8
55.0
49.0
43.6
38.8
34.6
30.8
27.4
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