Interactive Tool · Cycling

Cycling Gear Ratio Calculator

Calculate gear ratios and speed at cadence for every chainring and cog combination.

Reviewed May 29, 2026

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Drivetrain
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Sources & Further Reading

Reviewed May 29, 2026. Tool outputs are estimates for gear fit, training, or shopping context. Confirm league rules, personal fit, and safety-sensitive decisions with qualified coaches, fitters, clinicians, or local avalanche professionals where relevant.

Next Step

Use the result with current gear paths

This calculator is a starting point. Use the result alongside current TSP guides, returnable purchase paths, and deal tracking instead of retailer searches.

Open related TSP guide Track related deals
Recommended Gear

Drivetrain & Gearing Components All links use our Amazon Associates tag — thank you for supporting TSP.

Shimano 105 Di2 R7150 Groupset — Best value electronic groupset for climbing optimization
~$900 Track cycling gear deals
Program: TSP retailer/deal path
SRAM Rival AXS Groupset — Wireless shifting, excellent ergonomics, 10-33t cassette
~$800 Track cycling gear deals
Program: TSP retailer/deal path
Wolf Tooth 40T Chainring — Drop-stop narrow-wide — best 1x chainring for gravel
~$50 Track cycling gear deals
Program: TSP retailer/deal path
SunRace 11-42T 11-Speed Cassette — Wide-range climbing cassette — compatible with many bikes
~$60 Track cycling gear deals
Program: TSP retailer/deal path

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