If you’re tired of making hats that are way too big (or way too small), I’ve outlined a crochet hat size chart that will totally help!
Crochet hats can be tricky to make and measure, especially since just an inch of crochet fabric can be the difference between a toddler or adult size!
If you’re tired of crocheting hats that are way too big, or way too small, I’ve got a simple math tip to help you with size every time!
Don’t worry.
I’m not going to show you complicated math equations and numbers.
This is easy, and anyone can do this!
I even created a free calculator tool to help you with the numbers (keep scrolling).
Table of contents
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Estimated reading time: 4 minutes
Tips To Measure Crochet Hats
Before you get started, there are some things you should know about crocheting hats:
- How to measure
- Sizes by age
- Sizes by style
- Gauge and size
- Patterns
Read more about each of these, and get a handy measurement guide cheat sheet to help you crochet any size hat: What Size Hat To Make: Easy Guide For Crochet
What to Measure
There are two measurements to understand when crocheting a hat:
- Circumference: This is the measurement around a circle. For a fitted hat, the circumference of a hat should be the same as the circumference of a head.
- Diameter: This is the measurement across a circle. When crocheting in center-out increasing rounds, the diameter is the cross section of a circumference.
You can use circumference or diameter to measure the actual stitches you’re creating to crochet perfectly sizes hats!
This is where the math gets exciting…
The number 3.14 (Pi) is going to feel like magic, but really it’s just a helpful math tool!
In the math world, Pi is the ratio of a circle’s circumference to the diameter.
In the crochet world, Pi is going to easily help to calculate the circumference and diameter of your own personal crochet stitch work.
Example: Circumference (around)
Let’s give it a try, starting with the circumference (see the previous image for reference).
If you know what size hat you want to make, divide that number by 3.14.
Example: 22” circumference / 3.14 = 7.006369″
And so, to crochet a hat with a 22” circumference, the diameter of your beginning circle should reach about 7”.
Example: Diameter (across)
Let’s give it a try, starting with the diameter (see the previous image for reference).
To check what size hat you are making, multiply the diameter by 3.14.
Example: 7” diameter * 3.14 = 21.98”
And so, if your diameter measures 7”, the circumference of the hat you are crocheting will be 21.98”.
How To Crochet In The Round
If you’d like to give this easy tip to measure crochet hat sizes a try yourself, I’ve gathered some simple instructions for you to try.
For patterns to crochet single, half double and double crochet stitches in joined rounds, go to this article: How to crochet straight seams in joined rounds: Single, Half Double & Double Stitches
Crochet Hat Pattern
Ready to crochet a hat that actually fits? Give this one a try today: Ombre Beanie: Easy Crochet Pattern with 6 Sizes
Crochet Hat Calculator
This interactive crochet hat calculator tool allows you to key specific numbers to help you find the diameter or circumference of your crochet fabric:
Video Chat
For even more details about crochet hat sizes, watch my video chat right here: Crochet Hat Size Chart + Cheat Sheet
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Peace + Love + Crochet
Salena
I too have been crocheting since I was 5. My mother taught me while doing her own projects. Hardly a day goes by that I don’t pick up and work on a project.
I enjoy knowing people with like interests. Much more alike than different, we all are connected in many ways. Crochet ROCKS!!