
HOW TO MEASURE YOUR NECK FOR A SHIRT:
A GUIDE TO THE PERFECT FIT
Finding a shirt that looks great is only half the battle. If the collar is too tight or sits awkwardly, it can impact your entire outfit and leave you feeling uncomfortable all day.
Whether you’re prepping for a wedding or updating your office wardrobe, getting an accurate neck measurement is the best way to keep you looking sharp and feeling at ease.
It takes just a minute, and you’ll only need minimal tools - including this handy guide. Keep reading to find your perfect fit and shop our range of shirts with total confidence.
WHY MEASURING YOUR NECK PROPERLY MATTERS
Getting your collar size right is about more than just numbers - it’s about all-day comfort and a smarter appearance. A collar that fits right stops that pinched feeling and keeps your tie sitting exactly where it should.
But an accurate measurement is more than just the foundation of a well-put-together outfit. It also cuts out the guesswork when you shop for formal shirts or workwear online, so you get the perfect fit first time.

WHAT YOU’LL NEED
You don’t need a tailor to get this right, but to measure your neck at home, you will need a handful of everyday items:
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A Flexible Tape Measure: This is the most accurate tool for measuring the curves of your body.
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A Mirror: This helps you keep the tape positioned correctly at the back of your neck.
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Alternatives: If you don’t have a tape measure, a piece of string (or even a charging cable) and a ruler will work just as well.
HOW TO MEASURE YOUR NECK FOR A SHIRT:
Step 1: Stand Naturally
To get a realistic reading, start by standing normally - look straight ahead, stay relaxed and keep your shoulders level. If you tense up or pull your chin down, you might end up with a measurement that’s too tight.
Step 2: Position The Tape Measure
Wrap the tape measure around the base of your neck where your shirt collar would normally sit. Make sure it’s flat against your skin and not twisted at the back.
Step 3: Allow Room For Comfort
Take note here, because this is the most important part of the process! Put one finger between your neck and the tape measure - it should feel snug but not restrictive. Having this bit of extra space will give you breathing room in the shirt, so you don’t end up with a tight, uncomfortable fit once it’s buttoned up.
Step 4: Take The Measurement
Write down the measurement in inches - this is how collar sizes are given in the UK. If you find yourself between sizes, round up to the nearest half inch for the best results.

COMMON MISTAKES TO AVOID
It’s life - mistakes happen. But to avoid as many as you can while measuring for your new shirt, keep these pointers in mind:
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Don’t pull the tape measure too tight: It should rest on the skin, not dig into it.
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Don’t measure too high: Keep the tape measure at the base of the neck, not up towards the jawline.
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Don’t forget to give some breathing room: Always remember the "one finger" rule - no one wants a suffocating collar!
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Don’t just guess based on your old shirts: Fabric can stretch or shrink over time, so always take a fresh measurement before buying a new shirt.
WHAT IF YOU’RE BETWEEN SIZES?
If your measurement falls exactly between two sizes, we always recommend sizing up. A slightly larger collar will be much more comfortable, and it’ll stop the fabric from pulling across the top button.
Remember to keep your preferred styles in mind. A slim fit shirt will sit closer to the body, while a regular or tailored fit offers more room. Different fabrics and collar types will affect how snug the shirt feels, too. And if you like to wear ties, you’ll want to aim for a slightly more generous collar fit as well.
MEASURING YOUR NECK WITHOUT A TAPE MEASURE
We get it - everyone has a flexible tape measure lying around. But don’t worry. Just a few simple switches, and you’ll still be able to get an accurate measurement.
Find yourself a piece of string, a charging cable, or just anything you can wrap around your neck. Remember to use the same “one finger” comfort rule, and keep another finger at the point where the ends meet. Lay the string flat against a ruler, note the measurement in inches, and you’re all set to start shopping.

READY TO FIND THE PERFECT-FIT SHIRT?
Measuring your neck is the quickest and easiest way to guarantee a perfect fit - think dapper looks, all-day comfort, and complete confidence. Before you start shopping, it’s definitely worth taking a moment to find the right size for you.
Once you have it, you can browse the Jacamo shirt range knowing your favourite will fit just right. No doubt, no discomfort, and no returns to deal with. So whether you’re looking for a crisp white shirt for a wedding or something printed for the office, we have the perfect style and fit for you.