A worked example
22.68 km/h with 2100 mm rollout and 50/25 gearing needs 90 rpm.
Cadence target
Work back from a chosen speed to crank revolutions per minute.
YOUR LITTLE WORKBENCH
ON YOUR DEVICE ✦Cadence target
Loading your local workspace…
THE METHOD / 01
A clear wayfrom start to finish.
Cadence = speed × 1,000,000 ÷ (60 × circumference × front/rear).
Keep the assumptions clear
A kinematic conversion, not training or medical advice.
A FEW USEFUL ANSWERS
Good to know.
Are my inputs uploaded?
No. Processing runs locally in your browser. The host still receives normal requests for website pages and assets.
Can I keep my result?
Use the download controls for the current tool or print from your browser. Your valid edits autosave in this browser. Export a JSON backup to move devices; see the privacy page.
Do I need an account?
No sign-up, paid API or subscription is required. Both languages use the same tools. English always opens at the root address.
SPINKIND / TOOLKIT