Like ItachiWasAHero started, in this site, it is stated that his weight here is 61.2 kg in part 1, which is here, that is in part 2. I also try it to find on ShounenSuki's translated characters, but the main characters isn't there. --NejiLoverr26 (Ilnarutoanime)Konohagakure Symbol 07:35, May 27, 2011 (UTC)

For the simply stats and personal info from the databooks, you can use this page.
For Kankurō, his height and weight are:
  • 165cm and 60kg at 14;
  • 167.0cm and 61.2kg at 15; and
  • 175.0 and 61.2kg at 18.
ShounenSuki (talk | contribs | translations) 11:24, May 27, 2011 (UTC)
So his weight hasn't changed after all. Thank you Shounen-senpai! I forgot you have that page. I'll tell ItachiWasAHero. --NejiLoverr26 (Ilnarutoanime)Konohagakure Symbol 11:33, May 27, 2011 (UTC)