Spoke Length Calculator

Effective Rim Diameter (ERD), mm
Spoke Bed Offset (OSB), +/- mm L. R.
Hub flange diameter, mm L. R.
Hub center to flange, mm L. R.
Number of spokes
Number of spoke crosses L. R.
Hub spoke hole diameter, mm
Left Spoke Length: mm
Right Spoke Length: mm

Warning! This caclulator should not currently be used to calculate spoke lengths for straight pull hubs.

Disclaimer: Use at own risk. Please take the time to ensure that your hub and rim measurements are accurate. All measurements must be in millimeters (mm).

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Second Opinion?

Below is a list of trusted online calculators that you can use to check against this one and help confirm your selected spoke lengths.