There are a lot of patterns for crochet baby hats, but this is free pattern by far the easiest and quickest. Use this free pattern to make hats as baby shower gifts or to donate!

Finished Size:
Age: Newborn to 3 months
Crown Circle Diameter 4.45 – 4.75 inches/11-12.5 cm
Top of crown to bottom of ear: 5.5 – 6 inches/14 – 15 ½ cm

Crochet Hook:
5.0 mm

https://northeastmama.com/the-perfect-newborn-baby-hat/