Determine your exact wheel circumference in mm for precise bike computer calibration.
Calibration Setting
0 mm
Enter this in your Bike Computer
Total Diameter0 mm
Including tire height
Inches0″
Total Circumference
PrecisionHigh
Estimate Reliability
Why Calibration Matters: A 10mm error in circumference can lead to a 0.5% error in your speed and distance. For the most accurate results, use the **Manual Roll-out** method while sitting on the bike to account for tire compression.
