hare
a [javascript] singlespeed and fixed-gear cycling calculator
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Select
Front gear:
Rear gear:
Crank length:
150 mm
152 mm
155 mm
158 mm
160 mm
162.5 mm
165 mm
167.5 mm
170 mm
172.5 mm
175 mm
177.5 mm
180 mm
185 mm
190 mm
Tire size:
29 inch (nominal)
28 inch (nominal)
27 inch (nominal)
26 inch (nominal)
700 X 56 / 56-622 / 29 inch
700 X 50 / 50-622 / 29 inch
700 X 44 / 44-622 / 29 inch
700 X 38 / 38-622
700 X 35 / 35-622
700 X 32 / 32-622
700 X 28 / 28-622
700 X 25 / 25-622
700 X 23 / 23-622
700 X 20 / 20-622
Tubular / Wide
Tubular / Narrow
28 X 1 1/2 / 40-635
27 X 1 3/8 / 35-630
27 X 1 1/4 / 32-630
27 X 1 1/8 / 28-630
27 X 1 / 25-630
26 X 2.35 / 60-559 / MTB
26 X 2.125 / 54-559 / MTB
26 X 1.9 / 47-559 / MTB
26 X 1.5 / 38-559 / MTB
26 X 1.25 / 32-559 / MTB
26 X 1.0 / 25-559 / MTB
650 x 38b / 38-584 650B
650 x 28C / 28-571 / 26" road/tri
650 x 25C / 25-571 / 26" road/tri
650 x 23C / 23-571 / 26" road/tri
26 X 1 3/8 / 35-590
24 inch (nominal)
24 x 1 / 25-520
20 inch (nominal)
20 X 1.75 / 44-406 / BMX
20 X 1 1/4 / 28-451
18 x 1.5 / 40-355
17 x 1 1/4 / 28-369
16 x 1 1/2 / 40-349
16 x 1 3/8 / 35-349
16 x 1.5 / 37-305
Ambidextrous skidder:
Gear Data
Gear ratio:
Gain ratio:
Gear inches:
Development (in):
Development (m):
Skid patches:
Speed Analysis
Select unit:
m/s
km/h
ft/s
mi/h
10 RPM
20 RPM
30 RPM
40 RPM
50 RPM
60 RPM
70 RPM
80 RPM
90 RPM
100 RPM
110 RPM
120 RPM
130 RPM
140 RPM
150 RPM
160 RPM
170 RPM
180 RPM
190 RPM
200 RPM