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
Determine how worn your bike chain is by measuring 12-link length and accounting for mileage, conditions, and maintenance. Use it to decide if replacement is overdue before costly cassette damage occurs.
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 | 5 |
| 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. | Determine how worn your bike chain is by measuring 12-link length and accounting for mileage, conditions, and maintenance. Use it to decide if replacement is overdue before costly cassette damage occurs. |