However, England's football governing body confirmed that this was not the case, and Kane was eager to point out that his weight was the lower figure of the two.
"The lads came over to me yesterday afternoon and said my weight had been put at 96 kilos," Kane told Sky Sports News.
"I don't know if it's been changed but I'm definitely not 15-and-a-half-stone. I'm normally about 89 or 90 kilos. We weigh most days when we get up and that's normally my fighting weight.
"I feel really good and training has been of a high intensity. Obviously everyone is fighting for places and that has pushed everyone along fitness-wise.
"It's been a tough camp and that's what we all needed. It was good to get some minutes on the weekend and I'm fully refreshed."
Kane will captain the Three Lions in Russia as they look to progress from a group which includes Panama, Tunisia and Belgium.