Niche Tools Program

Specific calculators, planners, and explainers for jobs that usually get buried in forums.

HTML-first, no account wall Shareable URLs and direct outputs

Cycling · Comparator · Interactive explainer

Bike drivetrain gear range comparator

Compare two bike drivetrains side by side so you can see what changes when you swap chainrings, cassette range, or wheel rollout: lower climbing gears, taller top end, duplicate overlap, and cadence jumps.

Compare two setups

Target search intent: bike gear ratio calculator, 1x vs 2x calculator, compare cassette gear range, and gravel gearing comparison.

Drivetrain A

Use comma-separated tooth counts like 46,33 or 40.

Use the whole cassette, for example 10,11,12,13,15,17,19,21,24,28,32,36.

Drivetrain B

Good for comparing your current setup against a 1x, a wider cassette, or a race cassette.

The page flags duplicate overlap and step jumps so the comparison is not just lowest and highest gear.

What this page helps you answer

  • How much easier is the easiest gear if you switch cassette or chainring size?
  • How much top-end do you give away if you move from a 2x road setup to a 1x gravel setup?
  • How many of the gears in a 2x setup are effectively duplicates?
  • Where do cassette jumps become big enough that cadence control starts feeling rough?

The wheel presets are good approximations. If you have measured rollout from your actual tyre and pressure, switch to custom and enter the circumference directly.

Read the launch note for this comparator.

Headline comparison

Decision notes

Gear ladder highlights

Drivetrain A ladder

Drivetrain B ladder

Try a few adjacent pages while you are here.