This really depends on the size of your guitalele. The average guitalele falls between 17 inches and 28 inches. So as you can guess, it really depends on the length of the fretboard. The longer the fretboard, the more frets it’s going to have. Simple as that. However, if you run into a so called guitalele that is more than 28inches, I don’t think that qualifies as a guitalele. It’s just too big in length.