Chain Wear Calculator
Measure chain stretch to determine wear percentage, estimate remaining life, and plan replacement timing to protect your drivetrain.
Inputs
Results
Chain Wear
0.23%
Status
Good – no replacement needed
How to Use This Calculator
- Measure the length of 12 links using a ruler or chain wear tool and enter in millimeters.
- Enter your Weekly Mileage to project replacement timing.
- Select Chain Type (Standard 8-11 speed or Performance 12 speed).
- Review Wear Percentage and Status — replace at 0.5% for 12-speed, 0.75% for others.
- Check Estimated Miles Remaining and Weeks Until Replacement to schedule maintenance.
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