Chaos weapons cannot be enchanted.
NOTE: Humanity only scales up to 10. You can input a value above 10, but the game (and this calculator) will identify it as being the maximum for the weapon, which is 10. There are NO increases above 10 Humanity.
If you use FF4 and cannot view the ZohoSheet online calculators, there is now a workaround. Click here!
In order to input your data, click the "Click to Edit" button. Then, plug in the humanity value you wish to test.
Note: Should you accidentally delete something important, simply reload the page to restart.
I apologize but this edit method is the best I can find currently.