Everyone needs to know there gears ...   Gear combinations, the key to cycle performance

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Comrades
Conversion Calculator
Run Time Prediction
Walk Strategy Planner
Cycle Time Prediction
Gear Ratio Calculator
Triathlete's Time Prediction
Heart Rate Calculator

The History of the Gear Calculator

Often cyclists wonder how fast can they actually go or what their cadence is at a specific speed in a specific gear selection. They also speculate on how could the sprockets be resized to fit their requirements. This calculator is there to assist the cyclist in determining just that. By simply using your wheel circumference in millimetres (mm), your cadence in revs per minute (rpm), the number of teeth on the chainring selected and the number of teeth on the sprocket selected, the relevant information can be calculated.

Feedback regarding the accuracy of this calculators would be highly appreciated, and mail can be sent to info@sportsdigest.co.za.

All calculators on this site were developed for you as an athlete.

Gear Ratios and Speed Calculator

Using The Gear Ratios and Speed Calculator

Gear Combination Calculations
Details Chainrings (Chr)
1 = Smallest
Circumference of
wheel (mm)
   mm 1

Teeth
2

Teeth
3

Teeth
Preferred Cadence  rpm
Sprockets (Spr)
1 = Largest
1

Teeth
2

Teeth
3

Teeth
4

Teeth
5

Teeth
6

Teeth
7

Teeth
8

Teeth
9

Teeth
Predicted Speed Table
Combination
(Chr/Spr)
Ratio
1:?
Speed
Km/h
Combination
(Chr/Spr)
Ratio
1:?
Speed
Km/h
Combination
(Chr/Spr)
Ratio
1:?
Speed
Km/h
1/1 2/1 3/1
1/2 2/2 3/2
1/3 2/3 3/3
1/4 2/4 3/4
1/5 2/5 3/5
1/6 2/6 3/6
1/7 2/7 3/7
1/8 2/8 3/8
1/9 2/9 3/9

If you need any more information, please do not hesitate to contact me at info@sportsdigest.co.za.

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