Written by Sonia Su

I've always admired hats on others, but I've struggled to find ones that suit me. It seems like no matter how many styles I try, they just don't look quite right. So the challenge of finding a hat size and style that complements my face shape and personal style has been real.

Despite this, I'm intrigued by how hats can transition effortlessly through different seasons, offering both sun protection in summer and warmth in winter. If you're as determined as me to find the perfect dad hat, flat cap or beanie that not only fits well but also enhances your look throughout the year, then look no further.

In this article, I cover the essential steps and considerations for ensuring that every hat you choose fits just right.

What are Hat Sizes?

Hat sizes refer to the standardized measurements used to ensure a proper fit for different head shapes and sizes. Unlike general sizing (small, medium, large), hat sizes are often based on precise head circumference, typically measured in inches or centimeters.

These sizes vary by region, with the most common systems being U.S. sizes, U.K. sizes, and metric sizes (centimeters). Most fitted hats use a numerical sizing system, such as 7 1/4, 7 3/8, or 7 1/2, which correspond to the circumference of your head.

Adjustable hats, like snapbacks and baseball caps, are more flexible. These adjustable hats typically fit are are usually labeled as one-size-fits-all or one-size-fits-most, with adjustable straps for a customizable fit.

The average hat size varies by region and gender:

• Men's average hat size: Around 7 ⅜ (58 cm or 22 ¾ inches)
• Women's average hat size: Around 7 ¼ (57 cm or 22 ½ inches)
  

How to Measure Hat Sizes

A hat size is measured by determining the circumference of the head. Here's our step-by-step guide on how to measure your head to find the perfect hat size:

Step 1: Gather Your Tools

You’ll need:
✔ A flexible tape measure (preferably in inches or centimeters).
✔ If you don’t have one, use a string and a ruler to measure later.

Step 2: Measure Your Head

1. Position the Tape Measure: Wrap the measuring tape around your head, placing it about ½ inch (1.25 cm) above your eyebrows and ears—this is where your hat will sit naturally.
2. Ensure a Comfortable Fit: The tape measure should be snug but not too tight. If using a string, mark the point where it overlaps, then measure it against a ruler.
3. Record Your Measurement: Write down your head circumference in both inches and centimeters for accuracy.

Step 3: Compare Your Measurement to a Hat Size Chart

Now that you have your head circumference, use the chart below to determine your hat size.

How Do Hat Sizes Work?

Sizes are usually determined by the circumference of the head measured around the largest part, just above the ears and eyebrows. Sizes can be given in numerical measurements (inches or centimeters) or standard sizes (small, medium, large, XL).

Some brands use alpha sizing (S, M, L) while others use numeric sizing (e.g., 7, 7 1/4). It's important to consult the specific sizing chart for accurate fitting.

Men’s & Unisex Hat Size Conversion Chart

Head Circumference	U.S. Hat Size	U.K. Hat Size	Metric (CM)	General Size
21 1/4 in	6 3/4	6 3/4	54 cm	Small (S)
21 5/8 in	6 7/8	6 7/8	55 cm	Small (S)
22 in	7	7	56 cm	Medium (M)
22 3/8 in	7 1/8	7 1/8	57 cm	Medium (M)
22 3/4 in	7 1/4	7 1/4	58 cm	Large (L)
23 1/8 in	7 3/8	7 3/8	59 cm	Large (L)
23 1/2 in	7 1/2	7 1/2	60 cm	X-Large (XL)
23 7/8 in	7 5/8	7 5/8	61 cm	X-Large (XL)
24 1/4 in	7 3/4	7 3/4	62 cm	XX-Large (XXL)

 

Most women’s hat sizes range from Small (S) to Large (L) with an average head circumference of 21.5 to 22.5 inches (54-57 cm). However, women can also wear men’s or unisex hats by following the standard sizing chart above.

Here's a Pro Tip:

If you're between sizes and choosing a fitted hat, it's usually best to size up for comfort. You can also use hat sizers or foam strips to adjust the fit if needed.

Find Your Hat Size | Online Calculator

 

 

 

How to Choose the Perfect Hat

Choosing a hat that suits you involves considering several factors:

• Face Shape: Determine your face shape (round, oval, heart-shaped, etc.) and choose a hat style that complements it. For example, angular hats can balance round faces, while softer styles can flatter angular features.
  
  
• Proportion: Consider your body proportions. A larger hat may overwhelm a petite frame, while a smaller hat might get lost on a larger frame. Choose a size and shape that harmonizes with your overall proportions.
• Personal Style: Reflect on your personal style preferences. Whether it's classic, trendy, or bohemian, select hat styles that align with your fashion aesthetic and makes you feel confident. Nimble Made's bestselling dress shirts are sure to help you complete your look, including this white dress shirt that has sold out over 8x.
  
• Occasion: Tailor your choice to the occasion. A wide-brimmed sun hat suits beach outings, while a felt fedora or trilby hat may be more appropriate for cooler weather or formal events.
• Comfort: Ensure the hat feels comfortable when worn. It shouldn't be too tight or too loose, and the material should feel comfortable against your skin. You should err on the side of having a little too much room.
• Color: Consider the color of the hat and how it complements your hair color, skin tone, and wardrobe. Neutral tones like black, brown, or navy are versatile, while bold colors can make a statement. Check out Nimble Made's slim-fit dress shirts and T-shirts to pair with your hat. We love this classic white T-shirt.
  
• Try Different Styles: Experiment with different hat styles until you find one that feels right. Don't be afraid to step outside your comfort zone and try something new!

 

Hat Styles for Each Face Shape

Choosing hats that complement different face shapes can enhance your overall appearance. Here are some suggestions:

Round Face:

• Fedora: Opt for a fedora with a medium to wide brim and a slightly higher crown to add height and elongate the face.

• Newsboy Cap: A structured newsboy cap with a small brim can provide angles and balance to a round face.

Oval Face:

• Bucket Hat: A bucket hat with a medium brim can complement the natural symmetry of an oval face.

• Beret: A classic beret worn slightly tilted can highlight the balanced proportions of an oval face.

Square Face:

• Wide-brimmed Hat: Choose hats with wide brims like floppy hats, sun hats, or one of these best cowboy hats to soften the angles of a square face.

• Beanie: A slouchy beanie or a knit cap can add a casual, relaxed look that contrasts with the structured jawline. We listed one of the best slouchy beanies for winter here.

Heart-Shaped Face:

• Cloche Hat: A cloche hat with a rounded crown and downturned brim can balance a heart-shaped face by adding width at the jawline.

• Fedoras with Detail: Fedora hats with decorative elements or a wider brim can draw attention away from the forehead and balance out the chin.

Long/Rectangular Face:

• Flat Cap: A flat cap or newsboy cap with a low, rounded crown can add width to the face and break up its length.

• Wide-brimmed Hat: Hats with wide brims, such as floppy hats or boater hats, can create horizontal lines that balance the length of a rectangular face.

Diamond-Shaped Face:

• Pork Pie Hat: A pork pie hat with a flat crown and small brim can complement the cheekbones and balance the jawline of a diamond-shaped face.

• Baseball Cap: A structured baseball cap worn forward can soften the angles of the face and draw attention to the eyes.

 For more on body measurements, check out our other guides below:

• How to Measure Waist For Pants
• How to Measure Neck Size for Men's Dress Shirt
• How to Measure Chest Size in 7 Steps

 

FAQs about Hat Sizes

How Do You Know Your Hat Size?

To find your hat size, measure the circumference of your head using a flexible measuring tape. Wrap the tape around your head, about 1/2 inch above your eyebrows and ears, where a hat would naturally sit.

Compare your measurement to a hat size chart to determine your exact size. If you don’t have a measuring tape, you can use a piece of string and then measure it against a ruler.

Is a 7 1/4 Hat Size Big?

A 7 1/4 hat size is considered a medium to medium-large size in most hat sizing charts. It translates to approximately 22 3/4 inches (57.8 cm) in head circumference. While not the biggest size available, it is on the larger side of the average range for adult men.

What Is 23.5 Inches in Hat Size?

A head circumference of 23.5 inches (59.7 cm) typically corresponds to a 7 1/2 hat size in U.S. sizing. This falls into the large (L) to extra-large (XL) range, depending on the brand or style of the hat.

What Is 22 Inches in Hat Size?

A 22-inch (55.9 cm) head circumference usually translates to a size 7 hat in U.S. measurements.

This is considered a medium size for most hats and should fit many adults with average head sizes. If you're between sizes, opting for an adjustable or stretch-fit hat can help ensure a comfortable fit.