Bicycle Gearing & Fit Calc
bike-calc.x402tookit.com · 8 paid endpoints · listed 2026-11-02
Rolling circumference and diameter for common tyre sizes, or an estimate from rim bead diameter and tyre width in mm.
Paid endpoints
| Method | Endpoint | Price | Networks |
|---|---|---|---|
| GET | bike-calc.x402tookit.com/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. | $0.02 | Polygon, Arbitrum, Base, Solana |
| GET | bike-calc.x402tookit.com/chain-length Chain length in links, rounded up to even, from chainstay length and chainring and cog teeth, with the exact figure. | $0.02 | Polygon, Arbitrum, Base, Solana |
| GET | bike-calc.x402tookit.com/climb-gradient Gradient percent and angle from rise and distance, plus climbing rate (VAM) and the time to climb at a given rate. | $0.02 | Polygon, Arbitrum, Base, Solana |
| GET | bike-calc.x402tookit.com/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. | $0.02 | Polygon, Arbitrum, Base, Solana |
| GET | bike-calc.x402tookit.com/gear-ratio Gear ratio, gear inches, development per pedal turn and speed at a cadence for a chainring and cog on a given wheel. | $0.02 | Polygon, Arbitrum, Base, Solana |
| GET | bike-calc.x402tookit.com/gear-table Gear inches and speed at a cadence for every chainring and cog in a drivetrain, with the range, steps and duplicate gears. | $0.02 | Polygon, Arbitrum, Base, Solana |
| GET | bike-calc.x402tookit.com/saddle-height Starting saddle height from inseam by the LeMond (0.883) and Hamley (1.09) rules, plus the Holmes knee-angle check. | $0.02 | Polygon, Arbitrum, Base, Solana |
| GET | bike-calc.x402tookit.com/wheel-size Rolling circumference and diameter for common tyre sizes, or an estimate from rim bead diameter and tyre width in mm. | $0.02 | Polygon, Arbitrum, Base, Solana |
Latest checks
| When | Endpoint | HTTP | ms | Result |
|---|---|---|---|---|
| Not checked yet. | ||||
Income on Base (7 days)
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