How to Measure Yourself for Clothes: A Men's Guide to Getting the Right Fit
Knowing your own measurements makes buying clothes online far easier — a better-fitting shirt, pyjamas, dressing gown or pair of trousers. Precise measurements also matter if you're ordering anything made to measure.
Here's how to measure yourself for clothes, without any specialist equipment: a tailor's tape measure, a mirror and a few minutes are enough. You just need to measure in the right places, with a natural, relaxed posture.
This men's body measurements guide covers how to measure your chest, waist, hips and inseam, how to read your results against a size chart, and the mistakes that throw them off — including how to do the whole thing on your own.
What you'll need
Four things, none of them specialist:
- A tailor's tape measure
- A full-length mirror
- Paper and a pen, or your phone
- A pair of trousers that already fits you well
A tailor's tape measure is the soft, flexible kind that curves around your body. A rigid DIY tape measure can't bend around you accurately and will give you an unreliable result. If you don't have a tailor's tape measure to hand, a length of non-stretch string works as a stand-in: wrap it around yourself, mark where it meets, then lay it flat against a ruler.
Every measurement below is given in centimetres. To convert to inches, multiply by 0.39; to go the other way, multiply inches by 2.54.
Getting ready to measure
Measure over bare skin or thin, close-fitting underwear. Thick clothing adds several centimetres and will throw off every measurement that follows.
Before you start:
- Stand in front of a mirror.
- Keep your back straight, without stretching taller than usual.
- Relax your shoulders.
- Breathe normally.
- Don't pull your stomach in.
- Keep your feet parallel.
- Don't pull the tape tight.
- Check that the tape stays horizontal.
The tape should sit against your body without compressing your skin, and without leaving a gap either. Take each measurement twice. If the two results differ by more than a centimetre — about 0.4 inches, using the conversion above — take a third reading to settle it.
Chest
Your chest measurement is an important one for choosing a shirt, jacket, T-shirt, pyjama or dressing gown.
- Wrap the tape around the fullest part of your chest.
- Run it under your armpits.
- Keep your arms relaxed at your sides.
- Check in the mirror that the tape stays horizontal across your back.
- Breathe normally.
- Read the result without pulling the tape tight.
Don't puff your chest out or hold your breath — the measurement should reflect your everyday posture, not a flattering one. For a relaxed piece such as a linen dressing gown or a set of linen pyjamas, the maker builds in extra room — known as ease — on top of your chest measurement, so the garment moves with you rather than against you.
Natural waist
Your natural waist is measured around your abdomen, at its natural crease.
To find it, tilt your upper body gently to one side. The crease that forms is generally your natural waist. Place the tape around that point, keep your stomach relaxed, breathe normally, and check the tape stays horizontal.
Your natural waist doesn't always sit where your trousers actually rest — which is exactly why the next distinction matters.
Waist vs belt line: what's the difference?
Your natural waist sits between your ribs and hips. It's the reference point for tracking changes in your body over time, and for choosing high-waisted styles.
Your belt line is measured exactly where you actually wear your trousers or shorts — which can sit noticeably lower than your natural waist.
| Measurement | Location | Main use |
|---|---|---|
| Natural waist | The natural crease of your torso, between ribs and hips | Tracking body changes; high-waisted styles |
| Belt line | Where your trousers or shorts sit in practice | Trousers, shorts and pyjama bottoms |
For buying linen trousers or a pair of bermuda shorts, your belt line is generally the more useful number.
Hips (seat)
Your hips measurement is the circumference around the widest part of your hips and seat.
- Stand with your feet together.
- Wrap the tape around your hips.
- Position it over the fullest part of your seat.
- Check it's horizontal in the mirror.
- Keep your muscles relaxed.
- Record the result without pulling the tape into your skin.
Your hips measurement tells you whether trousers, shorts or pyjama bottoms will have enough room to move in. It's a particularly important check for a fabric with no stretch, such as linen.
Inseam
Your inseam is the distance from the top of your inner thigh to where you want the hem of your trousers or pyjama bottoms to fall. You can measure directly, or from a pair of trousers you already own.
Measuring your inseam directly
- Stand up straight with your feet slightly apart.
- Place the start of the tape at the highest point of your inner thigh.
- Run the tape down the inside of your leg.
- Stop at your preferred length.
- Record the result in centimetres.
This method is easier with someone helping you hold the tape steady.
Measuring your inseam from a pair of trousers
If you're on your own, this second method is often more reliable:
- Choose a pair of trousers whose length already suits you.
- Lay them flat.
- Fold one leg over to expose the inner seam.
- Smooth the fabric out without stretching it.
- Measure from the crotch seam to the hem.
The crotch seam — sometimes called the fork — is the point inside the trousers where the front and back seams meet.
Which measurement matters most for each garment?
Not every measurement carries equal weight for every piece in your wardrobe.
| Garment | Priority measurements | Secondary measurements |
|---|---|---|
| Shirt | Chest and neck | Shoulders, waist, sleeve |
| Pyjamas | Chest and belt line | Hips, inseam |
| Dressing gown | Chest | Height, sleeve |
| Shorts | Belt line and hips | Preferred length |
| Trousers | Belt line and hips | Inseam and fork |
| Jacket | Chest and shoulders | Waist, sleeve |
| Suit | Chest, waist and hips | Shoulders, sleeve and inseam |
For a loose-fitting piece, prioritise whichever measurement corresponds to the widest part of your body. For a closer cut, check every measurement the brand lists — not just the headline one.
How to read a size chart
S, M, L and XL aren't standardised between brands, and UK, EU and US sizing don't line up exactly either.
Before you order, check whether the chart gives your body measurements, the cut of the model shown, and the garment's finished length. A linen garment generally doesn't have the stretch of a jersey piece, so it needs generous ease, particularly around the chest, hips and belt line.
Worked example
Your chest measurement corresponds to a Medium, but your hips measurement corresponds to a Large. For linen pyjamas or trousers, sizing up to the Large is usually the safer call — it keeps the freedom of movement the fabric needs. If you're ever unsure, go with whichever measurement points you toward the larger size, and check with customer service before you order.
Common measuring mistakes
Using a DIY tape measure
A metal DIY tape measure can't follow the curve of your body and will give you an inaccurate reading.
Pulling the tape too tight
The tape should touch your skin without compressing it. Pull it too tight and you'll end up choosing a garment that's too small.
Letting the tape tilt
For your chest, waist and hips especially, keep the tape level all the way round. Use a mirror to check it stays straight across your back.
Measuring over thick clothing
A jumper, a heavy shirt or bulky trousers can add several centimetres.
Changing your posture
Don't pull your stomach in or puff your chest out. An artificial posture gives you a size that won't fit your everyday self.
Confusing your body with the garment
Garment dimensions normally include an ease allowance — don't compare them directly to your own measurements without checking the maker's method first.
Working from an old measurement
Bodies change. Re-measure before any significant purchase or a made-to-order piece.
Measuring yourself without help
A second pair of hands improves accuracy, but you can take most of these measurements alone.
- Stand in front of a full-length mirror.
- Check the tape from the front and in profile.
- Take a self-timer photo of your back to check the tape is level.
- Hold the tape temporarily in place with a clip or peg.
- When a measurement is awkward to take on your body, measure a garment that already fits you well instead.
- Use a pair of trousers to work out your inseam.
- Take every measurement twice.
- Write each result down immediately, before you forget it.
For a few of these, a second person's help is still recommended.
Frequently asked questions
Should I measure myself in the morning or the evening?
The time of day matters less than consistency. If you're comparing measurements over time, measure at a similar time and in similar conditions.
Should I hold my stomach in or flex?
No. Stay relaxed, keep your posture upright, and breathe normally.
Should I measure on bare skin?
Ideally, yes — or over thin, close-fitting underwear. Avoid measuring over thick clothing.
Can I use a DIY tape measure?
A DIY tape measure isn't suitable for measuring around your body. Use a tailor's tape measure or a length of non-stretch string instead.
What if I'm between two sizes?
Check the garment's cut and fabric. For a non-stretch fabric like linen, sizing up generally gives you more comfort.
Are online size charts reliable?
A chart specific to the brand and the exact product is your best reference. General conversions between UK, EU and US sizing are only ever a rough guide.
How do I check the tape is straight across my back?
Use a mirror, take a self-timer photo, or ask someone else to check for you.
What's the difference between your waist and your hips?
Your waist is measured around your abdomen. Your hips are measured around the widest part of your hips and seat.
Do I need my measurements in centimetres or inches?
Both, if you can. Most European size charts use centimetres and most UK and US ones use inches — having your numbers in both means you can check any chart without converting on the fly. As a rule of thumb, 1 inch is 2.54cm, or 1 centimetre is 0.39 inches.
Keep your measurements on file
Accurate measurements make it far easier to choose a garment that's genuinely comfortable and suited to your build — and they matter even more for linen, a natural fabric whose elegance depends on a fluid cut and well-judged ease.
Write your results down with the date you took them, and check them against the size chart for the specific product you're buying, rather than a general size conversion.
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