Spoke length calculator

Fill in the boxes manually, or choose common components from the drop down lists.

All dimensions in mm.

Number of Spokes:
Help Number of spoke crosses:
Help Hub diameter:
Help Hub flange spacing:
Help Hub flange centre offset:
Help Rim Diameter:

Click this button to calculate the spoke length in mm:

Spoke Lengths Required:

Drive side: mm
Non Drive side: mm
Round these results to the nearest available spoke lengths. Be cautious about rounding lengths up.

NB. A reminder, for those who may have forgotten. The order to build a wheel is:

  1. NDS pulling. Inserted into hub from the outside - ie. towards the opposite flange. First spoke pulling away from valve hole
  2. DS pulling. Inserted from outside
  3. DS pushing. From inside
  4. NDS pushing. From inside
where NDS means Non-Drive side, DS means drive side, and pulling/pushing refers to the drive from the chain