Size Guide

Getting the right fit is the most important part of looking good and feeling comfortable. We've put together some useful size guides as well as a handy calculator tool for big and tall men so you can find the perfect fit.

Find Your Fit

We know finding clothes to fit a bigger or taller frame can be tough. Use our calculator to get a personalised size recommendation.

Measurement Units Imperial (ft, st) Metric (cm, kg)

Height

Weight

Height (cm) Weight (kg)

Chest (inches) Measure around the widest part of your chest Waist (inches) Measure around your natural waistline Inside Leg (inches) Measure from the crotch to the ankle bone Fit Preference

Relaxed Standard Fitted

Show My Size

How Those Fits Would Look

When using this tool, selecting a loose fit will size you up and selecting fitted will drop you down a size. We always recommend going for the regular fit, but we understand different people prefer their clothes to fit differently.

Chest Size Guide (inches and cm)

Waist Size Guide (inches and cm)

Leg Length Guide (inches)

Extra Tall Waist Size Guide (inches and cm)

Extra Tall Chest Size Guide (inches and cm)

Shop by Size

How do I measure my chest size?

Big Fish Clothing's shirts for big men and shirts for tall men are designed with comfort in mind, but it’s still important to get the sizing right. Use a tailor’s tape measure and wrap it under your armpits around the broadest part of your chest while standing naturally. Make sure it’s snug but not tight, and avoid it twisting or drooping. Round up to the nearest half-inch or centimetre.

Ok, so how do I find my collar size?

This one matters especially for formal shirts. Wrap the tape around the base of your neck, just below the Adam’s apple. You should be able to comfortably slide two fingers under the tape. A slightly loose fit is better than tight, especially once you add a tie into the mix.

How do I measure my waist size?

Even if you have a rough idea of your waist size, a quick check can save you hassle. Wrap the tape around your waist at belly button height and leave a finger’s width between the tape and your body for a comfortable fit. All our big men's jeans and plus size trousers are designed with room to move, but accurate measurements always help. We offer free returns, but fewer trips to the Post Office is always a win.

A quick tip: wearing larger clothes to hide areas you’re self-conscious about rarely works. Properly fitting clothes are nearly always more flattering. We’ve been fitting big and tall guys since 2004 so trust us on this one.

What about a belt?

A belt should pull your outfit together — not your trousers. If your jeans only stay up when you’ve got one on, they probably don’t fit right. Instead, think of a belt as a finishing touch. Choose one that matches your shoes, or keep both a black and a brown option in rotation. And yes, the French tuck still counts.

I know my height, but how do I measure my leg length?

While the height chart below is helpful, it’s best to measure your inside leg (inseam) directly — from the top of your thigh to your ankle. That’s the number to use for a natural, well-fitting trouser length.

Trends come and go, from cropped ankles to baggy hems, but we always recommend starting with a classic inseam and adjusting from there. You can always cuff your jeans or chinos for a styled finish.

The advice above works just as well for taller guys. Our extra tall jeans and tall men’s trousers are tailored to give you a longer rise, proper leg length and a better overall fit.

So there you have it, practical tips for measuring your chest, collar, waist and inside leg before your next wardrobe refresh. Once you've found your fit, you might want a little style inspiration too: 5 Timeless and Simple Outfits for Plus Sized Men.