Karl's SS/FG gear calculator

rings:
cogs:
wheel diameter: = inches
Display options:

(choose what kinds
of data you want to
see on the chart)

gear inches
gear ratio
gain ratio with cranks
skid patches
cadence at MPH
MPH at RPM of cadence
effective chainstay length with links of chain (experimental!)
chain length for effective chainstay length of inches (even more experimental!)
target gear inch value:

(specify a gear inch
value to enable color
weighting of the chart)

gear inches
color spread amount:

(changes the size of
the color gradient)

bold results with: a gear inch value between &
and a gear ratio between &
and a gain ratio between &
and # of skid patches between &
(any criteria left blank will not be considered; use whatever combination you need)
submit
424344454647484950515253
1384.32 inch
86.33 inch
88.34 inch
90.35 inch
92.35 inch
94.36 inch
96.37 inch
98.38 inch
100.38 inch
102.39 inch
104.4 inch
106.41 inch
1478.3 inch
80.16 inch
82.03 inch
83.89 inch
85.76 inch
87.62 inch
89.49 inch
91.35 inch
93.21 inch
95.08 inch
96.94 inch
98.81 inch
1573.08 inch
74.82 inch
76.56 inch
78.3 inch
80.04 inch
81.78 inch
83.52 inch
85.26 inch
87 inch
88.74 inch
90.48 inch
92.22 inch
1668.51 inch
70.14 inch
71.78 inch
73.41 inch
75.04 inch
76.67 inch
78.3 inch
79.93 inch
81.56 inch
83.19 inch
84.83 inch
86.46 inch
1764.48 inch
66.02 inch
67.55 inch
69.09 inch
70.62 inch
72.16 inch
73.69 inch
75.23 inch
76.76 inch
78.3 inch
79.84 inch
81.37 inch
1860.9 inch
62.35 inch
63.8 inch
65.25 inch
66.7 inch
68.15 inch
69.6 inch
71.05 inch
72.5 inch
73.95 inch
75.4 inch
76.85 inch
1957.69 inch
59.07 inch
60.44 inch
61.82 inch
63.19 inch
64.56 inch
65.94 inch
67.31 inch
68.68 inch
70.06 inch
71.43 inch
72.81 inch
2054.81 inch
56.12 inch
57.42 inch
58.73 inch
60.03 inch
61.34 inch
62.64 inch
63.95 inch
65.25 inch
66.56 inch
67.86 inch
69.17 inch
2152.2 inch
53.44 inch
54.69 inch
55.93 inch
57.17 inch
58.41 inch
59.66 inch
60.9 inch
62.14 inch
63.39 inch
64.63 inch
65.87 inch
2249.83 inch
51.01 inch
52.2 inch
53.39 inch
54.57 inch
55.76 inch
56.95 inch
58.13 inch
59.32 inch
60.5 inch
61.69 inch
62.88 inch