How to Measure Your Head for a Hat

Buying a hat online? Don’t guess your size. A hat that’s too tight can cause uncomfortable pressure, while one that’s too loose may slip or fall off.

The easiest way to measure your head for a hat is to wrap a flexible measuring tape around your head where the hat’s inner band will sit, then record the circumference in centimetres.

It takes less than a minute, and knowing your measurement makes choosing the right hat much easier.

What You’ll Need

You only need a few simple things:

• A flexible measuring tape marked in centimetres.
• A mirror to help you keep the tape positioned correctly.
• Something to record your measurement, such as your phone or a piece of paper.

If you don’t have a measuring tape, you can use a non-stretch string and a ruler instead.

How to Measure Your Head for a Hat: Step by Step

Step 1: Position the Measuring Tape

Place the measuring tape around your head, approximately 1–2 cm above your eyebrows.

Guide it above your ears and around the back of your head, following the position where the hat’s inner band would naturally sit.

For hats designed to sit higher or lower, adjust the tape position to match how you intend to wear the hat.

Step 2: Keep the Tape Level

Use a mirror to check the tape’s position.

It should follow a smooth line around your head without twisting or slipping.

The tape doesn’t have to be perfectly horizontal if your preferred hat position is slightly angled, but it should follow the same path the hat’s band will take.

Step 3: Make It Comfortably Snug

Pull the measuring tape gently until it rests against your head.

Don’t pull it tight. The tape should touch your head without digging into your skin or compressing your hair excessively.

Measuring too tightly can lead you to choose a hat that’s smaller than you need.

Step 4: Read the Measurement

Look at the point where the end of the tape meets the numbered section.

Record the result in centimetres.

For example, if the tape reads 57.5 cm, that’s your measured head circumference.

Step 5: Measure Again

Repeat the measurement once or twice to confirm the result.

If you get slightly different readings, check that the tape is following the same path and isn’t being pulled more tightly on one attempt.

Use the most consistent measurement when checking a hat size chart.

How to Measure Your Head Without a Measuring Tape

No flexible measuring tape? A non-stretch string works too.

1. Take a piece of string long enough to wrap around your head.
2. Position it where the hat’s band will sit.
3. Keep it comfortably snug without stretching it.
4. Mark the point where the string meets its starting end.
5. Lay the string flat and measure from the end to the mark with a ruler.

Avoid elastic string because stretching can make the result inaccurate.

Hat Size Chart in Centimetres

Once you know your head circumference, you can use it to find an approximate hat size.

In many European sizing systems, a numeric hat size corresponds approximately to head circumference in centimetres.

Important: This is a general adult size reference. Letter sizes vary between manufacturers, and some brands use different size ranges. Always check the specific product’s size chart.

What If Your Head Measurement Falls Between Sizes?

Suppose your head circumference is 57.5 cm, but the available fitted hat sizes are 57 and 58.

For a non-stretch fitted hat, size 58 is often the better starting point, especially if size 57 would create pressure.

However, the correct choice depends on the hat’s internal shape, materials and the manufacturer’s sizing recommendations.

If the hat has an adjustable strap or stretchy band, you may have more flexibility.

Do You Measure Differently for Baseball Caps?

The basic method is the same.

Measure around your head where the cap’s inner band will sit, generally above the eyebrows and ears.

For adjustable baseball caps, compare your measurement with the manufacturer’s adjustment range.

For fitted baseball caps, the measurement matters more because the cap doesn’t have an adjustable closure.

How Do You Measure Your Head for a Beanie?

Beanies usually have stretchy knitted fabric, so the sizing process is often more forgiving.

Measure your head circumference as normal, then check the beanie’s recommended size range.

Keep in mind that some beanies are designed to fit snugly, while others have extra fabric for a slouchy silhouette.

Tip: A “one size” label doesn’t guarantee that a beanie fits every head circumference comfortably.

Does Your Hairstyle Affect Hat Measurements?

Yes, especially if you have thick, curly or voluminous hair.

If you plan to wear your hair underneath the hat, arrange it as you normally would before measuring.

For a close-fitting hat, measuring over bulky hair can change the result. Try to reproduce the hairstyle you’ll actually wear with the hat.

Common Head Measuring Mistakes

Small errors can make a noticeable difference when choosing a fitted hat.

• Pulling the tape too tightly: This can make your measurement artificially small.
• Measuring too high: The tape may not follow the hat’s actual band position.
• Using stretchy string: Elastic materials can distort the measurement.
• Ignoring your hairstyle: Hair volume can affect fit.
• Measuring only once: Repeating the measurement helps catch errors.
• Assuming all brands use identical sizes: Always check the product chart.

How to Know If Your Hat Fits Correctly

Once you try on the hat, check how it feels.

A properly fitting hat should:

• stay in place during normal movement;
• feel secure without squeezing your forehead;
• avoid creating painful pressure around the temples;
• sit at the intended height without constantly slipping;
• remain comfortable during extended wear.

If the hat matches your circumference but still feels uncomfortable, its crown shape may not suit your head shape.

Choosing Women’s Hats and Accessories

For women’s hats, measuring your head circumference is more reliable than assuming a particular size based on gender.

Consider hairstyle, crown depth and whether you prefer an adjustable or fitted design.

Explore our women’s accessories for pieces that complement your outfit, and check the individual product’s sizing information before ordering.

Choosing Men’s Hats and Accessories

The same measuring method applies to men’s hats and caps.

Start with head circumference, then consider the hat’s crown shape, band design and available adjustments.

Browse our men’s accessories and compare the product measurements with your own for a more reliable fit.

Quick Answer: How to Measure Your Head for a Hat

Wrap a flexible measuring tape around your head approximately 1–2 cm above your eyebrows, following the position where your hat’s inner band will sit. Keep the tape comfortably snug, read the circumference in centimetres and repeat the measurement to confirm it.

Then compare your result with the manufacturer’s size chart. If you’re between sizes, consider the hat’s adjustability, stretch and construction before choosing.

The golden rule: Measure where the hat will actually sit, don’t pull the tape too tight, and always check the product-specific sizing information.