Bicycle Gear Ratio Calculator
Calculate your bicycle's gear ratio, gear inches, and development for optimal cycling performance.
Gear Ratio -
Gear Inches -
Development (meters) -
Speed (km/h) -
Common Gear Ratios
| Front/Rear | Ratio | Use Case |
|---|---|---|
| 34/28 | 1.21 | Steep climbing |
| 36/24 | 1.50 | Mountain climbing |
| 42/21 | 2.00 | General climbing |
| 48/18 | 2.67 | Flat terrain |
| 52/14 | 3.71 | High speed |