KnitPicks Summer Yarn Sale. Save up to 50%.

I have decided to provide all my content and knitting patterns for free. This means that my income comes from advertisements.

This webiste contains affiliate links meaning that if you buy something after clicking them I may earn a small commission. This does not result in any additional costs to you and the money I get from the yarn sales enables me to use my time to create free content for you. If you decide to purchase I’m really grateful for your support!

Head size chart for knitting hats

These measurements are the average head circumference measures gathered from different sources (e.g. knitting books & websites). You can use the measurement as a basis when you are grading your hat design or when you are knitting a hat as a gift. However, there is no chart that works for everyone so it’s always better if you are able to measure the head you are going to knit the hat for.

The finished hat circumference depends on how stretchy the stitch pattern you choose for your hat is. As a rule of thumb, a stockinette or ribbed hat should be made with approximately 10% to 15% of negative ease. This means that if according to the table the head circumference is 22″ the hat circumference should be from 18.7″ to 19.8″ but for instance, colorwork hats should have less negative ease because the fabric is not nearly as stretchy as stockinette stitch. Less negative ease means simply that the hat circumference and head circumference should be closer to each other. In this article I have explained how to figure out how many stitches to cast-on for a hat.

Typically you would also want to add some positive ease to your hat length. For teenagers and adults the hat is usually knitted 2-3″ (5-8 cm) and for babies and toddlers 1-2″ (2.5 – 5 cm) longer than the measurement from crown to base of ear.

Head size chart in inches

AgeHead circumferenceLength from crown to base of ear
6 months16.5″5.75″
12 months18″6.5″

Head size chart in cm

AgeHead circumferenceLength from crown to base of ear
Preemie30 cm10.5 cm
Newborn35 cm12.5 cm
6 months40 cm14.5 cm
12 months45 cm16.5 cm
Toddler48 cm17 cm
Child51 cm18.5 cm
Teenager53 cm19.5 cm
Woman55 cm21 cm
Man56 – 61 cm23.5 cm

Leave a Reply

Your email address will not be published. Required fields are marked *

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Knit Socks that last

I’ll send you my top 5 tips of how to make a durable pair of socks.