Hat Sizes | Everything You Need to Know

hat sizes

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 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 hat 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.


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. Here is our hat size chart:

Hat Size

Head Circumference (cm)

Head Circumference (inches)

Small (S)

54 - 55

21 1/4 - 21 5/8

Medium (M)

56 - 57

22 - 22 3/8

Large (L)

58 - 59

22 3/4 - 23 1/8

Extra Large (XL)

60 - 61

23 1/2 - 24


62 - 63

24 3/8 - 24 3/4

This chart provides a guide for hat sizes with head circumference measurements in both centimeters and inches.

Adjustable hats typically fit up to XL or 7 ⅞. Always refer to specific sizing charts from the manufacturer for the most accurate fit.


How Are Hat Sizes Measured?

Sizes are measured by determining the circumference of the head.

The average hat size can vary depending on region and demographic factors, but generally the most common male size and female size falls within the range of 22 to 23 inches (or 56 to 58 centimeters) in circumference. This typically corresponds to a medium size (M) in many hat sizing charts.

measuring tape

Here are the steps to determine the right hat size:

  • Get a Tape Measure: Use a flexible tape measure, ideally one used for sewing.
  • Position the Tape: Wrap the measuring tape around your head. Place it just above your ears and across the middle of your forehead.
  • Ensure Levelness: Make sure the tape is level and snug, but not too tight. It should be comfortable and not compressing your skin.
  • Read the Measurement: Note the measurement where the tape meets. Record the number in inches or centimeters.
  • Consult a Sizing Chart: Use the measurement to find your corresponding hat size on a hat sizing chart provided by the manufacturer. This chart will help you convert your head measurement into a standard hat size.


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.
    beanie hat
  • 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.
    white collared shirt in business professional semi formal attire
  • Occasion: Tailor your choice to the occasion. A wide-brimmed sun hat suits beach outings, while a felt fedora or cloche 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!


The Best 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 or sun 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.


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
  • 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.

baseball cap

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


Frequently Asked Questions about Hat Sizes

How do you find out your hat size?

To find your hat size, wrap a flexible measuring tape around your head about half an inch above your eyebrows and ears, where the hat will sit. Note the circumference in inches or centimeters, then refer to a hat size chart to determine your corresponding size.

Is a 7 3/8 hat a medium or large?

A 7 3/8 hat size typically falls within the large range for adult head sizes. Sizes 7 1/4 and above are generally considered large, while sizes between 6 7/8 and 7 1/8 are considered medium.

What are US hat sizes?

U.S. sizes are based on the circumference of the head measured in inches or centimeters. Sizes typically range from 6 ¾ (21 1/8 inches or 53.5 cm) to 8 (25 inches or 63.5 cm), with half and quarter sizes available for a more precise fit.

What size is an XL hat?

An XL hat typically corresponds to a head circumference of approximately 23 5/8 to 24 inches (60-61 cm). Sizes can vary by brand, so it's always best to check the specific sizing chart provided by the manufacturer.

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