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Chainstretch
Chainstay Length
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Online (
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Display as chart
or tabulated text
Teeth on chainrings (front): largest:
and smallest:
Teeth on cogs (rear): largest:
and smallest:
Units below are centimeters
or inches
Chainstay length (in above units):
Tire diameter:
700x35
700x28
700x23
700x20
27x1.25
26x1.9
26(559mm)x1.0
26(650c)x1.0
24x1
20x1.75
Include
half-link
? Yes
No
Chain stretch
(in inches per 12 inches of chain):
Highlight area
:
Off
Vertical
Fixed. Inn.
Excentriker
Horizontal
Results
Ring
↓Cog
Stay Length
Halflinks
Gear inches
52
13
42.123
100
104.6
51
13
42.484
100
102.6
50
13
42.843
100
100.6
49
13
41.912
98
98.6
48
13
42.269
98
96.6
47
13
42.625
98
94.6
45
13
42.047
96
90.6
44
13
42.399
96
88.5
43
13
42.749
96
86.5
41
13
42.165
94
82.5
40
13
42.512
94
80.5
39
13
42.857
94
78.5
38
13
41.923
92
76.5
37
13
42.266
92
74.5
36
13
42.609
92
72.4
34
13
42.013
90
68.4
53
14
42.769
102
99.0
51
14
42.198
100
95.3
50
14
42.556
100
93.4
48
14
41.981
98
89.7
47
14
42.336
98
87.8
46
14
42.689
98
86.0
44
14
42.108
96
82.2
43
14
42.457
96
80.3
42
14
42.805
96
78.5
40
14
42.217
94
74.7
39
14
42.562
94
72.9
38
14
42.905
94
71.0
37
14
41.970
92
69.1
36
14
42.311
92
67.3
35
14
42.651
92
65.4
53
15
42.484
102
92.4
52
15
42.843
102
90.7
51
15
41.912
100
88.9
50
15
42.269
100
87.2
49
15
42.625
100
85.5
47
15
42.047
98
82.0
46
15
42.399
98
80.2
45
15
42.749
98
78.5
43
15
42.165
96
75.0
42
15
42.512
96
73.2
41
15
42.857
96
71.5
40
15
41.923
94
69.8
39
15
42.266
94
68.0
38
15
42.609
94
66.3
36
15
42.013
92
62.8
35
15
42.352
92
61.0
34
15
42.690
92
59.3
53
16
42.198
102
86.7
52
16
42.556
102
85.0
50
16
41.981
100
81.8
49
16
42.336
100
80.1
48
16
42.689
100
78.5
46
16
42.108
98
75.2
45
16
42.457
98
73.6
44
16
42.805
98
71.9
42
16
42.217
96
68.7
41
16
42.562
96
67.0
40
16
42.905
96
65.4
39
16
41.970
94
63.8
38
16
42.311
94
62.1
37
16
42.651
94
60.5
35
16
42.052
92
57.2
34
16
42.389
92
55.6
53
17
41.912
102
81.6
52
17
42.269
102
80.0
51
17
42.625
102
78.5
49
17
42.047
100
75.4
48
17
42.399
100
73.9
47
17
42.749
100
72.3
45
17
42.165
98
69.2
44
17
42.512
98
67.7
43
17
42.857
98
66.2
42
17
41.923
96
64.6
41
17
42.266
96
63.1
40
17
42.609
96
61.6
38
17
42.013
94
58.5
37
17
42.352
94
56.9
36
17
42.690
94
55.4
34
17
42.087
92
52.3
52
18
41.981
102
75.6
51
18
42.336
102
74.1
50
18
42.689
102
72.7
48
18
42.108
100
69.8
47
18
42.457
100
68.3
46
18
42.805
100
66.9
44
18
42.217
98
63.9
43
18
42.562
98
62.5
42
18
42.905
98
61.0
41
18
41.970
96
59.6
40
18
42.311
96
58.1
39
18
42.651
96
56.7
37
18
42.052
94
53.8
36
18
42.389
94
52.3
35
18
42.724
94
50.9
53
19
42.625
104
73.0
51
19
42.047
102
70.2
50
19
42.399
102
68.8
49
19
42.749
102
67.5
47
19
42.165
100
64.7
46
19
42.512
100
63.3
45
19
42.857
100
62.0
44
19
41.923
98
60.6
43
19
42.266
98
59.2
42
19
42.609
98
57.8
40
19
42.013
96
55.1
39
19
42.352
96
53.7
38
19
42.690
96
52.3
36
19
42.087
94
49.6
35
19
42.422
94
48.2
34
19
42.755
94
46.8
53
20
42.336
104
69.3
52
20
42.689
104
68.0
50
20
42.108
102
65.4
49
20
42.457
102
64.1
48
20
42.805
102
62.8
46
20
42.217
100
60.2
45
20
42.562
100
58.9
44
20
42.905
100
57.6
43
20
41.970
98
56.2
42
20
42.311
98
54.9
41
20
42.651
98
53.6
39
20
42.052
96
51.0
38
20
42.389
96
49.7
37
20
42.724
96
48.4
35
20
42.118
94
45.8
34
20
42.451
94
44.5
Copyright 1996-2024 by Eric House & Fixed Innovations
This site was completely rewritten around October 2020. If you notice problems they are probably new!
Please
let me know
if you find problems or have comments about this site.