If you haven't seen
it yet, there's a new version of this page here.
Use this page to calculate bicycle gear sizes (in inches) from any
+ tyre dia.
Chainring(s): Rear sprocket(s):
GEAR SIZE: In the chainring box enter either a single parameter, e.g.,
52, or a
comma-separated list, e.g. 52,42. Same goes for the sprocket box, e.g.
Speed -- MPH
Speed -- KPH
Select Cadence and enter a value, e.g. 95, to calculate
the speed at that cadence using the above gear(s). Select Speed and enter a value,
e.g. 25, to calculate the cadence
required to achieve that speed using the above gear(s).
For single gears results are shown
in the coloured boxes above. For multiple gears results are shown in tabular
form (in a separate window) and can be downloaded in MS Excel format (see
Saving tables in Excel (.xls
After choosing File - Save As
replace the suggested .htm extension with .xls, e.g., gearcalc.htm becomes
gearcalc.xls, click OK and you're done.
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