So i finished my first hat today by following along to a youtube video and it was just for a basic beanie with a peal/ knit band at the bottom. Anyways i casted 45 stitches and it fits me perfectly (I’m a 17 year old). Since i loved it so much i wanted to make one for my sister who is 7 and i looked up how to figure out how to calculate the number of cast ons and it says I should do 80 for her head. but i know that will be way to big for her tiny head what am i missing.
I’m using 9mm circular needles,Wool Ease Thick and Quick super bulky yarn, and I knit about 5 stitches an inch.
For the circumference of her head I’m going with the average number because the hat is a surprise so like 19-21inches
What am I messing up?