How to measure spoke length on the wheel? How do I measure the spoke length for my mountain bike without taking one off the wheel.  I know some length are very similar and in the past I have bought the wrong length.
There are a bunch of spoke-length calculators online (here's one). This tells you what your spoke length should be, not what it is. You'll need to have exact measurements for the current hub and rim, although the calculator I linked to has a database of measurements you can look up.