You don't need to know his height if you are making the sword proportioned to you. What you want it a picture of the sword and him standing straight up where you can see the full length of himself and the sword. Then you measure the sword, then measure how far up that measurement goes, from the bottom up. Let's say it reaches just under the chest. The area on most cartoon anime guys that looks like a curved line where the chest ends and the abdomen starts, You'd measure yourself from the ground, to that area. Then that's how big you make the sword.
Good I found this:
See how his sword reached his collarbone? Well he's bent at the knees a little, so assume it's a big shorter. This looks like it would be just about mid chest. So measure from the ground, to straight up to your mid chest. If you need to, you can use a tack (or marker) and stand up to a wall and mark where that is, then measure the wall to that point so you know it's a straight line. Whatever measurement that is, that's how big to make it..
But his specific height will do nothing to help you.