Compare calculators
Both calculators run independently β change the inputs on either side to compare results.
Cycling
Bike Gear Ratio Calculator
Find your bike's speed at any cadence by calculating the gear ratio from chainring and cassette teeth counts, wheel size, and pedaling rate. Essential for optimizing gearing before a climb or time trial.
Fill in the required fields to see your result.
Cycling
Bike Chain Wear Calculator
Calculates chain wear percentage and estimates when replacement is due based on measured chain length, mileage, riding conditions, and drivetrain speed. Use it to prevent cassette and chainring damage from a worn chain.
Fill in the required fields to see your result.
Key differences
| Bike Gear Ratio Calculator | Bike Chain Wear Calculator | |
|---|---|---|
| Category | Cycling | Cycling |
| Inputs required | 4 | 4 |
| Result | Speed at Given Cadence (km/h) | Chain Wear Percentage (%) |
| What it does | Find your bike's speed at any cadence by calculating the gear ratio from chainring and cassette teeth counts, wheel size, and pedaling rate. Essential for optimizing gearing before a climb or time trial. | Calculates chain wear percentage and estimates when replacement is due based on measured chain length, mileage, riding conditions, and drivetrain speed. Use it to prevent cassette and chainring damage from a worn chain. |