What should I do if my measurement is between sizes?

If you find yourself between two sizes, we generally recommend sizing up. It’s much easier to wear a belt or have a tailor take in the waist than to try and stretch something too small. Comfort is key to any clothes you buy, and a slightly looser waist will feel and look better than one that digs in and causes the fabric to pull.

Does my waist size change throughout the day?

Yes, and it’s totally normal - all it takes is for you to eat and drink, and your midsection will expand slightly. For the most consistent results, try to measure yourself in the morning before you’ve eaten a large meal.

Is my trouser size the same as my waist measurement?

Not always. Many UK retailers use ‘vanity sizing’, where clothes are labelled as a smaller size than they actually are. Always check the size guide for inch measurements to make sure you’re getting the right fit.

How often should I measure my waist?

We recommend taking measurements every six months. Small changes in lifestyle and diet can change how your clothes sit, so keeping on top of them will make sure you always get comfy, sleek clothes without the guesswork.

Should I measure over my clothes?

For the most accurate result, you should measure against your bare skin. Measuring over a heavy jumper or thick pair of trousers can add an inch or two to the result, giving an inaccurate measurement and leaving you to buy clothes that are too baggy. If you have to wear clothes, stick to a thin base layer like a t-shirt.

What’s the difference between waist size and hip size?

Your waist is the narrowest part of your middle; your hip is the widest point of your lower body. While the waist size determines if trousers will stay up, the hip measurement makes sure you have room to sit comfortably without the fabric straining.

How do I find my total leg measurement?

Once you have your waist measurement sorted, you’ll need to get your [leg length](https://www.jacamo.co.uk/pages/how-to-measure-leg-length) by measuring from the crotch down to where you want the trousers to hit your shoes. Having both an accurate waist and leg measurement is the only way to guarantee a perfect trouser fit.

Model wears Knitted Crew Neck T-Shirt with Cream Trouser

HOW TO MEASURE YOUR WAIST: A MEN’S GUIDE TO PERFECT-FIT TROUSERS

Finding the right fit shouldn't be a guessing game. No one’s got time to order a bunch of trousers, try them all on, send the bad ones back… Shopping shouldn’t be that hard. So we’re taking things into our own hands.

Whether you’re after new jeans, sharp chinos or dapper trousers, finding the perfect pair starts with knowing your measurements.

This guide is here to talk you through it. We’ll help you accurately measure your waist so you can shop our collection with total confidence.

WHY AN ACCURATE WAIST MEASUREMENT MATTERS

Be honest - how often do you rely on the size of an old pair of jeans when shopping for new ones?

We’ve all done it, but because of different cuts, a 38-inch in one brand can feel like a 36 in another. Plus, fabric can lose its shape and stretch over time, so your old pairs might be giving you a false sense of fit.

Take a fresh measurement, and you know your clothes will sit properly on your hips, give you a clean shape, and won't pinch at the middle. The perfect fit makes every outfit look intentional, and it helps you move with ease.

WHAT YOU NEED TO MEASURE YOUR WAIST

Measuring your waist is super quick and easy. All you need is:

A flexible measuring tape: Use a fabric or vinyl one, and avoid metal DIY tapes - they’re too rigid to follow the natural curves of the body.

A mirror: A full-length one is ideal, so you can check that the tape is level all the way around your back. This will give you a more accurate reading.

STEP-BY-STEP: HOW TO MEASURE YOUR WAIST

Accuracy is key when you’re measuring your waist, but follow these simple steps, and you’ll get it right every time.

Find Your Natural Waist

Believe it or not, your natural waistline is often higher than where you wear your jeans. It’s the soft, fleshy area right between your ribs and hips - usually around belly button height or just above. Keep the skin bare so a bulky shirt or joggers don’t add extra inches to your measurements.

Get The Tape Position Right

Wrap the measuring tape around your waist, always keeping it parallel to the floor. Use the mirror to check that it hasn't moved out of place - if the tape is slanted, it’ll make your measurements inaccurate.

Keep Your Breathing Normal

Avoid sucking in your stomach or puffing out your chest - it’ll only give the wrong number and leave you ordering trousers that don’t fit. Just stand tall, keep your feet shoulder-width apart, and breathe normally.

Take Your Measurements

The tape should be snug but not too tight - you should be able to fit one finger comfortably behind the tape. Check the measurement, and this is your true waist size. Don’t forget to write it down so you have it close to hand when you’re trouser shopping.

MEASURING YOUR WAIST FOR TROUSERS VS JEANS

Generally, your natural waist measurement is the one you want. But because trousers and jeans are cut differently, the way you measure can change depending on what you’re buying. Understand the difference, and you’ll make clothes shopping effortless.

Model wears Regular Fit Plain Front Stretch Trouser in Charcoal

MEASURING FOR TROUSERS

More often than not, chinos and formal trousers are designed to sit higher than jeans, closer to your natural waistline. When you’re measuring for these smarter styles, keep the tape just above your hip bone. This will make sure your new trousers sit right, draping down the leg without bunching at the shoe. If you measure too low for formal trousers, you might find that they feel restrictive when you sit down.

SHOP TROUSERS

Model wears Calvin Klein 90s Straight Jean - Light Blue

MEASURING FOR JEANS

Jeans are almost always worn lower than suit trousers - most modern styles sit on the mid to lower hip. For the most comfortable denim fit, measure the area where you usually wear your jeans, which is often two or three inches below the belly button. If you’re searching for high-rise denim, stick to your natural waist measurement. But for low-rise or standard straight-leg jeans, the hip point measurement tends to be more reliable.

SHOP JEANS

UNDERSTANDING DIFFERENT TROUSER FITS

You’ve got your measurement, now it’s time to think about how you want your trousers to sit.

Classic Fit: These trousers usually rest at the natural waistline, giving a bit more room through the leg and seat. They’re the perfect fit for a traditional suit.

Low Rise: Many modern jeans and casual trousers sit lower on the hips. If you prefer this style, remember to take a second measurement around the top of your hip bones.

Tailored or Slim Fit: These trousers follow the body more closely. Having an accurate waist measurement is key here, because there’s less excess fabric to hide a bad fit.

TROUSERS FOR EVERY WAIST SIZE

Finding your style shouldn’t feel like a chore. But armed with an accurate waist measurement, you’ll save yourself time, energy, and hours spent in post office queues returning poor-fit pairs.

Here at Jacamo, we’re proud to deliver fashion that fits every build. With trousers in sizes S to 5XL (and even some in 6XL), plus waist sizes 28 to 54 inches, we have the styles for every man.

Learn how to measure leg length for an all-round perfect fit, then check out our full range to find your new favourite trousers.