How long is a Bass Guitar?

If you mean the "scale length", (the dimension between the nut and the bridge) it is 34 inches. The overall length (from body to end of end) will depend on the particular model of Fender bass. Over the years Fender has made bass in a number of scale lengths including 30", 32", 34" among others. I couldn't even guesstimate the number of models they've produced! Maybe a couple hundred or more!!!??? That could be a good Wiki.answers question. You can pick up specifications on the new Fender bass models at their website.