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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
44
20
42.905
100
57.6
42
18
42.905
98
61.0
40
16
42.905
96
65.4
38
14
42.905
94
71.0
45
19
42.857
100
62.0
43
17
42.857
98
66.2
41
15
42.857
96
71.5
39
13
42.857
94
78.5
52
15
42.843
102
90.7
50
13
42.843
100
100.6
48
20
42.805
102
62.8
46
18
42.805
100
66.9
44
16
42.805
98
71.9
42
14
42.805
96
78.5
53
14
42.769
102
99.0
34
19
42.755
94
46.8
49
19
42.749
102
67.5
47
17
42.749
100
72.3
45
15
42.749
98
78.5
43
13
42.749
96
86.5
37
20
42.724
96
48.4
35
18
42.724
94
50.9
38
19
42.690
96
52.3
36
17
42.690
94
55.4
34
15
42.690
92
59.3
52
20
42.689
104
68.0
50
18
42.689
102
72.7
48
16
42.689
100
78.5
46
14
42.689
98
86.0
41
20
42.651
98
53.6
39
18
42.651
96
56.7
37
16
42.651
94
60.5
35
14
42.651
92
65.4
53
19
42.625
104
73.0
51
17
42.625
102
78.5
49
15
42.625
100
85.5
47
13
42.625
98
94.6
42
19
42.609
98
57.8
40
17
42.609
96
61.6
38
15
42.609
94
66.3
36
13
42.609
92
72.4
45
20
42.562
100
58.9
43
18
42.562
98
62.5
41
16
42.562
96
67.0
39
14
42.562
94
72.9
52
16
42.556
102
85.0
50
14
42.556
100
93.4
46
19
42.512
100
63.3
44
17
42.512
98
67.7
42
15
42.512
96
73.2
40
13
42.512
94
80.5
53
15
42.484
102
92.4
51
13
42.484
100
102.6
49
20
42.457
102
64.1
47
18
42.457
100
68.3
45
16
42.457
98
73.6
43
14
42.457
96
80.3
34
20
42.451
94
44.5
35
19
42.422
94
48.2
50
19
42.399
102
68.8
48
17
42.399
100
73.9
46
15
42.399
98
80.2
44
13
42.399
96
88.5
38
20
42.389
96
49.7
36
18
42.389
94
52.3
34
16
42.389
92
55.6
39
19
42.352
96
53.7
37
17
42.352
94
56.9
35
15
42.352
92
61.0
53
20
42.336
104
69.3
51
18
42.336
102
74.1
49
16
42.336
100
80.1
47
14
42.336
98
87.8
42
20
42.311
98
54.9
40
18
42.311
96
58.1
38
16
42.311
94
62.1
36
14
42.311
92
67.3
52
17
42.269
102
80.0
50
15
42.269
100
87.2
48
13
42.269
98
96.6
43
19
42.266
98
59.2
41
17
42.266
96
63.1
39
15
42.266
94
68.0
37
13
42.266
92
74.5
46
20
42.217
100
60.2
44
18
42.217
98
63.9
42
16
42.217
96
68.7
40
14
42.217
94
74.7
53
16
42.198
102
86.7
51
14
42.198
100
95.3
47
19
42.165
100
64.7
45
17
42.165
98
69.2
43
15
42.165
96
75.0
41
13
42.165
94
82.5
52
13
42.123
100
104.6
35
20
42.118
94
45.8
50
20
42.108
102
65.4
48
18
42.108
100
69.8
46
16
42.108
98
75.2
44
14
42.108
96
82.2
36
19
42.087
94
49.6
34
17
42.087
92
52.3
39
20
42.052
96
51.0
37
18
42.052
94
53.8
35
16
42.052
92
57.2
51
19
42.047
102
70.2
49
17
42.047
100
75.4
47
15
42.047
98
82.0
45
13
42.047
96
90.6
40
19
42.013
96
55.1
38
17
42.013
94
58.5
36
15
42.013
92
62.8
34
13
42.013
90
68.4
52
18
41.981
102
75.6
50
16
41.981
100
81.8
48
14
41.981
98
89.7
43
20
41.970
98
56.2
41
18
41.970
96
59.6
39
16
41.970
94
63.8
37
14
41.970
92
69.1
44
19
41.923
98
60.6
42
17
41.923
96
64.6
40
15
41.923
94
69.8
38
13
41.923
92
76.5
53
17
41.912
102
81.6
51
15
41.912
100
88.9
49
13
41.912
98
98.6
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.