Bicycle Gearing & Fit Calc
Cadence needed to hold a target speed in a given gear, and the chainring-to-cog ratio needed for a speed at a cadence.
- Category
- Crypto & DeFi
- Starting price
- $0.02
- Paid calls · 30 days
- 20
- Unique payers · 30 days
- 12
Paid endpoints
8 endpoints, sorted by usage. Prices are per request.
- GET/cadence-for-speed
Cadence needed to hold a target speed in a given gear, and the chainring-to-cog ratio needed for a speed at a cadence.
$0.02Base3calls / 30d - GET/chain-length
Chain length in links, rounded up to even, from chainstay length and chainring and cog teeth, with the exact figure.
$0.02Base3calls / 30d - GET/climb-gradient
Gradient percent and angle from rise and distance, plus climbing rate (VAM) and the time to climb at a given rate.
$0.02Base3calls / 30d - GET/frame-size
Rough bike frame size (seat tube cm and S/M/L) from inseam by bike type, with a height-based letter size cross-check.
$0.02Base3calls / 30d - GET/gear-ratio
Gear ratio, gear inches, development per pedal turn and speed at a cadence for a chainring and cog on a given wheel.
$0.02Base2calls / 30d - GET/gear-table
Gear inches and speed at a cadence for every chainring and cog in a drivetrain, with the range, steps and duplicate gears.
$0.02Base2calls / 30d - GET/saddle-height
Starting saddle height from inseam by the LeMond (0.883) and Hamley (1.09) rules, plus the Holmes knee-angle check.
$0.02Base2calls / 30d - GET/wheel-size
Rolling circumference and diameter for common tyre sizes, or an estimate from rim bead diameter and tyre width in mm.
$0.02Base2calls / 30d