Bicycle Gear Inches Calculator: Compare Gears Across Wheel Sizes
Use gear inches to compare chainrings, cogs, and wheel sizes, then connect the result to cadence, rollout, climbing, and speed.
Skid Patch
Skid Patch Calculator: Fixed Gear Tire Wear and Gear Choice
Use the skid patch calculator to understand fixed gear tire wear, chainring and cog combinations, rotation points, and safer setup choices.