Karl's SS/FG gear calculator

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)