1. What is a Bicycle Gear Ratio Calculator?

Definition: This calculator determines the gear ratio of a bicycle based on the number of teeth on the chainring and cog.

Purpose: It helps cyclists understand their gearing setup and make informed decisions about gear combinations.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( GR \) — Gear ratio (unitless)
• \( \text{Chainring} \) — Number of teeth on front chainring
• \( \text{Cog} \) — Number of teeth on rear cog

Explanation: The gear ratio shows how many times the rear wheel turns for each pedal revolution.

3. Importance of Gear Ratio Calculation

Details: Understanding gear ratios helps cyclists choose appropriate gearing for different terrain and riding conditions.

4. Using the Calculator

Tips: Enter the number of teeth on your chainring and cog. Both values must be whole numbers greater than 0.

5. Frequently Asked Questions (FAQ)

Q1: What does a higher gear ratio mean?
A: Higher ratios mean more distance per pedal stroke (harder to pedal but faster at high speeds).

Q2: What's a typical gear ratio for road bikes?
A: Common ratios range from 2.0 (50/25) to 4.0 (52/13), depending on riding style.

Q3: How does gear ratio affect climbing?
A: Lower ratios (smaller chainring or larger cog) make climbing easier by reducing pedal resistance.

Q4: Should I consider wheel size with gear ratio?
A: For complete understanding, combine gear ratio with wheel circumference to calculate "gear inches".

Q5: What's the difference between gear ratio and gain ratio?
A: Gain ratio considers crank length and wheel size for more precise pedaling efficiency measurement.