Gear inches, rollout, and cadence
Know the gear before the hill.
Gear turns a chainring, a cog, and a wheel into gear inches, meters of rollout, and speed at your cadence. The tallest gear is free. $5 unlocks the chart. $15 keeps later bikes. Nothing renews.
$5
this bike, unlocked. $15 lifetime.
- Top gear speed
- Free
- Full cassette chart
- After you pay
- Climb and comparison
- CSV and print
What the chart contains
- Gear inches and meters of rollout for every chainring and cog.
- Speed at the cadence you type, plus 60 through 110 rpm.
- A second drivetrain, such as 50/34 with 11-28 against 52/36 with 11-34.
- A climbing check from grade, rider-plus-bike weight, and watts.
- A printable stem card and a CSV.
Example road bike · not your setup
- Wheel700c x 25
- Rings50/34
- Cassette11-28
- Cadence90 rpm
- QuestionIs 34/28 low enough for 8%?
Questions
Gear is a rollout chart from the wheel and the teeth you enter. Tire pressure, wind, and a worn cassette change the real speed. It is not a fit session and it does not size a frame.