Finding the right hat size shouldn't feel like guesswork. A well-fitting hat sits comfortably without pinching your head or sliding over your eyes, which makes all the difference if you wear it for hours at work, on the sports field, or outdoors. 

A reliable hat size chart takes the uncertainty out of buying hats online and helps you choose the right fit the first time. 

In this guide, you'll learn how to measure hat size, understand New Zealand sizing, and compare sizes for men, women, and kids. We'll also share a few of our favourite branded hats that combine everyday comfort with quality you can count on. 

Hat Size Chart (Men, Women & Kids)

Hat sizes in New Zealand are based on your head circumference in centimetres, which makes it easy to compare sizes across most brands. 

Many hats also include an international size such as Small, Medium, Large, or Extra Large, while fitted styles use traditional sizing like 7, 7¼, or 7½. A reliable hat size chart helps you match these measurements and choose a hat that feels comfortable from the moment you put it on.

Universal Hat Sizes

Most hats sold in New Zealand follow a similar sizing system:

• 52 to 53 cm = XS = Fitted size 6½ to 6⅝
• 54 to 55 cm = S = Fitted size 6¾ to 6⅞
• 56 to 57 cm = M = Fitted size 7 to 7⅛
• 58 to 59 cm = L = Fitted size 7¼ to 7⅜
• 60 to 61 cm = XL = Fitted size 7½ to 7⅝
• 62 to 63 cm = XXL = Fitted size 7¾ to 7⅞

If your measurement sits between two sizes, choose the larger option. A hat that has a little extra room almost always feels more comfortable than one that presses against your forehead.

Men's Hat Sizes

Most men's hats sold in New Zealand fall between 56 cm and 61 cm, which covers Medium to Extra Large. Adjustable baseball caps, trucker caps and snapback hats usually fit a wider range because the closure can be tightened or loosened to suit different head sizes.

General men's sizing includes:

• 54 to 55 cm: Small
• 56 to 57 cm: Medium
• 58 to 59 cm: Large
• 60 to 61 cm: Extra Large
• 62 to 63 cm: XXL

If you're buying a promotional hat for staff, sports teams or event giveaways, adjustable styles often provide the most practical fit because they suit most adults without the need to collect individual measurements.

Women's Hat Sizes

Women's hat sizes use the same centimetre measurements as men's. The biggest difference usually comes from the design of the hat rather than the sizing itself. Bucket hats, baseball caps and fashion hats can all fit slightly differently depending on the crown depth and overall shape.

Typical women's sizing is:

• 53 to 54 cm: Small
• 55 to 56 cm: Medium
• 57 to 58 cm: Large
• 59 to 60 cm: Extra Large

Many women choose adjustable caps because they offer extra flexibility and can easily accommodate different hairstyles without sacrificing comfort.

Kids' Hat Sizes

Children's hat sizes change quickly as they grow, so measuring your child's head gives a much better result than choosing a size based only on age. Adjustable caps are especially popular because they continue to fit for much longer.

As a general guide:

• 48 to 50 cm: Around 2 to 4 years
• 50 to 52 cm: Around 4 to 6 years
• 52 to 54 cm: Around 6 to 10 years
• 54 to 56 cm: Around 10 to 14 years

Many New Zealand schools, sports clubs and community groups choose adjustable caps for children because they simplify bulk orders and comfortably fit a wide range of ages.

No matter who you're buying for, taking a quick measurement before ordering is the easiest way to avoid the wrong fit. Once you know your head circumference, any hat sizing guide NZ, cap size chart NZ, or fitted hat size chart becomes much easier to use, helping you choose the right size with confidence.

Our Favourite Promotional Hats For Every Size

Choosing the right size is only part of the equation. These four promotional hats offer comfortable adjustable fits and suit a wide range of businesses, events and organisations across New Zealand.

Hat	Best For	Key Features
Cotton Twill Cap with Buckle	Corporate uniforms, trade shows	Adjustable buckle, structured 6-panel design, padded sweatband, large branding area
Rigger – Oilskin Look Cap	Outdoor work, farming, construction	Oilskin-look fabric, Velcro closure, pre-curved peak, durable finish
Slipstream Cap	Sports clubs, schools, giveaways	Contrast piping, adjustable Velcro strap, padded sweatband, generous print area
PET Sandwich Peak Cap	Eco-friendly promotions, community events	100% recycled PET fabric, adjustable buckle, structured 6-panel design, multiple branding options

How To Measure Hat Size

A quick measurement gives you a far more reliable result than guessing based on your usual clothing size. Follow these steps to get an accurate number in centimetres before you use a hat size chart.

Step 1: Use A Flexible Measuring Tape

Take a soft fabric measuring tape that can sit comfortably around your head. A rigid ruler will not follow the shape properly, so it can give you the wrong result.

No measuring tape at home? Use a piece of string, shoelace, or thin ribbon instead. Mark the point where the ends meet, then place it against a ruler.

Step 2: Position The Tape Correctly

Place the tape around the widest part of your head. It should sit about one centimetre above your eyebrows, pass just above your ears, and wrap around the fullest point at the back.

Keep the tape level all the way around. A tape that slopes up or down can change the measurement by several centimetres.

Step 3: Keep The Fit Comfortable

The tape should feel secure without pressing into your skin. Do not pull it tight, but do not leave a gap either.

Think about how you want the hat to feel. A snug fitted cap needs a close measurement, while a bucket hat or casual cap can allow a little more room.

Step 4: Record The Measurement In Centimetres

Read the number where the tape meets and write it down in centimetres. New Zealand hat sizes commonly use centimetres, so this figure will match most local sizing guides.

For example, a head circumference of 57 cm will usually match a Medium, while 59 cm commonly falls into a Large.

Step 5: Measure A Second Time

Repeat the process once or twice before choosing a size. Small changes in tape position can affect the result, especially around the back of the head.

Use the largest consistent measurement if your results differ slightly. A hat that is a touch too loose can often be adjusted, while a hat that is too tight rarely becomes comfortable.

Step 6: Match The Result To The Hat Style

Not every hat uses the same sizing method. Compare your measurement with the product details before placing an order.

• Fitted caps require the closest match because they do not include an adjustable closure.
• Snapbacks usually fit a broad adult range through a plastic back strap.
• Hook-and-loop caps offer fast adjustment and suit staff uniforms or event merchandise.
• Bucket hats often use Small, Medium, Large, and Extra Large sizing.
• Stretch-fit caps allow some flexibility but still need the correct base size.

A clear answer to how to measure hat size starts with the right tape position and a measurement taken in centimetres. Once you have that number, you can compare it with a hat sizing guide NZ and choose a fit that feels secure without pressure.

Hat Size Conversion Guide

Hat sizes can look confusing at first because different brands use different systems. Some list measurements in centimetres, others use Small to XXL, while fitted caps rely on traditional numerical sizes. Once you know your head circumference, converting between these systems becomes straightforward.

Convert Centimetres To Hat Sizes

Head circumference is the standard measurement used across New Zealand, making it the easiest place to start when buying a new hat.

As a general guide:

• 52 to 53 cm = XS = Fitted size 6½ to 6⅝
• 54 to 55 cm = Small = Fitted size 6¾ to 6⅞
• 56 to 57 cm = Medium = Fitted size 7 to 7⅛
• 58 to 59 cm = Large = Fitted size 7¼ to 7⅜
• 60 to 61 cm = Extra Large = Fitted size 7½ to 7⅝
• 62 to 63 cm = XXL = Fitted size 7¾ to 7⅞

If your measurement falls between two sizes, choosing the larger option usually provides a more comfortable fit.

Understanding Fitted Hat Sizes

A fitted hat size chart uses numbers instead of Small, Medium, or Large. These measurements originated in the United States and are still common for fitted baseball caps and premium headwear.

Here's how they compare:

• 6½ to 6⅝ fits approximately 52 to 53 cm
• 6¾ to 6⅞ fits approximately 54 to 55 cm
• 7 to 7⅛ fits approximately 56 to 57 cm
• 7¼ to 7⅜ fits approximately 58 to 59 cm
• 7½ to 7⅝ fits approximately 60 to 61 cm
• 7¾ to 7⅞ fits approximately 62 to 63 cm

Unlike adjustable hats, fitted caps cannot be tightened or loosened, so choosing the correct size is much more important.

Understanding S, M, L And XL Hat Sizes

Many bucket hats, promotional caps and outdoor hats use international sizing instead of fitted measurements even after washing the cap.

Most brands follow this format:

• XS: 52 to 53 cm
• S: 54 to 55 cm
• M: 56 to 57 cm
• L: 58 to 59 cm
• XL: 60 to 61 cm
• XXL: 62 to 63 cm

Keep in mind that some manufacturers adjust these ranges by around one centimetre, so it's always worth checking the individual product specifications before ordering.

Cap Size Chart NZ

A cap size chart NZ looks slightly different because many baseball caps and trucker caps include an adjustable closure instead of fixed sizing.

The most common options include:

• Snapback caps use a plastic strap and comfortably fit most adults between 54 and 61 cm.
• Hook-and-loop caps provide a wide adjustment range and are popular for corporate uniforms and promotional merchandise.
• Metal buckle caps offer a cleaner finish while allowing small fit adjustments.
• Stretch-fit caps come in fixed sizes, usually S/M or L/XL, with elastic fabric that adapts to your head.

If you're ordering branded hats for a team, workplace, school or event, adjustable caps often make the most practical choice because one size can comfortably fit a wide range of people.

Conclusion

Finding the right fit is much easier once you know your head measurement. A hat size chart removes the guesswork, helps you compare different sizing systems, and gives you more confidence when shopping online. 

After you measure your head in centimetres, you can quickly match your size to fitted hats, adjustable caps, or bucket hats without worrying about an uncomfortable fit. 

If you're ordering hats for a business, school, sports club or community event, choosing quality products with the right sizing options will help every recipient enjoy wearing them long after the event is over.

Frequently Asked Questions

How do I know my hat size?

Measure the circumference of your head with a flexible tape measure, positioning it about one centimetre above your eyebrows and ears. Compare the measurement in centimetres with a hat size chart to find your correct size.

What is the average hat size in New Zealand?

Most adults in New Zealand wear hats between 56 cm and 59 cm, which usually corresponds to Medium or Large depending on the brand.

What should I do if I'm between two hat sizes?

If your measurement falls between sizes, choose the larger one. A slightly looser hat is generally more comfortable, and many styles include adjustable closures for a better fit.

Are fitted hats and adjustable caps sized differently?

Yes. Fitted hats use exact numerical sizes and offer no adjustment, while adjustable caps use straps, buckles or snapback closures that fit a wider range of head sizes.

Do men's and women's hats use different size charts?

No. Men's and women's hats generally use the same centimetre measurements. The main differences are usually the hat's style, crown shape and overall design rather than the sizing itself.