Can I compare gear ratios between different wheel sizes using this calculator?

Yes, the calculator can convert ratios to a 26-inch wheel baseline, allowing you to compare gearing across different wheel and tire setups by toggling the conversion option on or off.

How do I save or share my gear configuration?

The calculator generates a unique URL based on your selected chainrings, sprockets, and wheel parameters; copying the link from your browser address bar will preserve your setup for bookmarking or sharing.

What does the percentage between cassette sprockets represent?

This value shows the gear ratio difference between two adjacent sprockets, helping you assess how smoothly or abruptly the gear steps feel while riding.

Are overlapping gear combinations highlighted in the results?

Yes, the tool marks overlapping or boundary gear combinations in red within the table, making it easy to identify redundant gear ratios in your setup.

SportsTool Review

Bike Gear Calculator

Provided byHowTo.Bikehowto.bike

This calculator lets you define cassette and chainring combinations and view a table of all gear ratio combinations. ...

One of 6 options for Bike Gear Calculator

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Screenshot of Bike Gear Calculator on HowTo.Bike — howto.bikeOpen the live tool →

About this tool

What Bike Gear Calculator does

The Bike Gear Calculator on HowTo.Bike is a free web tool that helps cyclists explore and compare drivetrain configurations. Users enter their chainring and sprocket sizes to generate a full table of gear ratios and gear inches, with additional data on speed at 100 rpm, percentage jumps between sprockets, and cadence-based speed tables. The calculator also accepts wheel and tire parameters, allowing for realistic speed and ratio calculations tailored to a specific bike setup. A key feature is the ability to save and share configurations via a persistent URL, and the interface highlights overlapping or boundary gear combinations in red for quick visual assessment.

Step by step

How to use the HowTo.Bike Bike Gear Calculator

1
Open the Bike Gear Calculator on HowTo.Bike and select your chainring sizes from the available options or add custom values.
2
Choose your cassette sprocket sizes (up to 13 gears) to define the full range of gear combinations.
3
Enter your wheel size and tire width in the options section to calculate gear inches and realistic speed values.
4
Review the generated table of all chainring/sprocket combinations, noting the red-highlighted overlapping ratios and the percentage differences between adjacent sprockets.
5
Use the speed table to see achievable speeds at various cadences, or copy the URL from your browser to save and share your current gearing setup.

Is it right for you

Best for

This tool suits cyclists and bike builders who want to compare multiple chainring and sprocket combinations, evaluate gear ratio gaps, or fine-tune a drivetrain for specific terrain without needing to purchase software or subscribe to a ser

Limitations

The interface relies on mouse interaction for detailed ratio information, which may be less convenient for some users.
Custom wheel and tire inputs are optional; results default to a 26-inch conversion if not specified.
The tool focuses on ratio and inch calculations and does not provide cadence-based speed estimates unless the user consults the separate spe

Questions

Bike Gear Calculator FAQ

Can I compare gear ratios between different wheel sizes using this calculator?: Yes, the calculator can convert ratios to a 26-inch wheel baseline, allowing you to compare gearing across different wheel and tire setups by toggling the conversion option on or off.
How do I save or share my gear configuration?: The calculator generates a unique URL based on your selected chainrings, sprockets, and wheel parameters; copying the link from your browser address bar will preserve your setup for bookmarking or sharing.
What does the percentage between cassette sprockets represent?: This value shows the gear ratio difference between two adjacent sprockets, helping you assess how smoothly or abruptly the gear steps feel while riding.
Are overlapping gear combinations highlighted in the results?: Yes, the tool marks overlapping or boundary gear combinations in red within the table, making it easy to identify redundant gear ratios in your setup.

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