Does Joules Run Big? Should I Size Up? Your Complete Sizing Guide

Joules generally runs true to size, though some customers find their knitwear and jersey pieces run slightly generous whilst their tailored items and coats can run small—so you shouldn't automatically size up, but instead check measurements for each specific garment type. I learned this the expensive way when I ordered my usual size 12 in a Joules jumper that arrived absolutely swimming on me, then sized down to a 10 in their field coat only to find it uncomfortably snug across the shoulders. Let me save you from my costly mistakes.

The Truth About Joules Sizing Consistency

Here's what makes Joules particularly tricky: their sizing isn't consistent across all product categories. Unlike brands that maintain strict sizing standards across everything, Joules seems to fit differently depending on whether you're buying their casual leisurewear, their country outerwear, or their smarter occasion pieces.

I've been buying Joules for about eight years now—initially for their brilliant raincoats, then expanding into their jumpers and dresses—and I've genuinely needed three different sizes across their range. My waterproof jacket is a size 12, my striped Breton tops are size 10, and my jersey dresses are size 14. It's maddening when you're trying to build a cohesive wardrobe, and it makes online shopping feel like Russian roulette.

The common thread in customer reviews? Most people report that Joules knitwear and jersey pieces run generously, whilst their structured outerwear and tailored pieces run small to true. This isn't a universal rule, but it's a helpful starting point.

Breaking Down Joules Sizing By Category

Let me give you specific guidance based on years of trial and error (and quite a few returns):

• Knitwear and jumpers – Tend to run generous. I usually size down one size from my typical UK size. Their chunky knits in particular are cut quite roomy.

• Jersey tops and dresses – Also run slightly large. The fabric has good stretch, so sizing down often gives a more flattering fit without being tight.

• Coats and jackets – Run small to true. Stick with your usual size or even size up if you plan to layer underneath. Their field coats are notoriously snug through the arms.

• Waterproofs and rain jackets – True to size. These are designed to layer over other clothing, so they have adequate room. Your usual size should work perfectly.

• Trousers and jeans – True to size, sometimes slightly generous in the waist. Check the specific measurements as their sizing can vary between styles.

• Dresses (woven fabrics) – Generally true to size, though fitted styles can run small through the bust and hips.

Why Joules Sizing Varies So Much

Joules is interesting because they're a British heritage brand that started with country and equestrian wear, then expanded into lifestyle clothing. Their original customer base wanted practical, slightly roomy clothing for outdoor activities, which explains why some of their pieces have that generous cut. Meanwhile, their newer, fashion-forward pieces are cut more closely to contemporary high street sizing.

I spoke to a Joules sales assistant once who confirmed that their "Right as Rain" collection (the waterproofs) and their "Coast" collection (the smarter pieces) are actually manufactured differently and sized to different specifications. It's like shopping two different brands under one name.

How Joules Compares to Other British Heritage Brands

If you're familiar with other British country brands, here's how Joules sizing compares:

Boden – Similar story to Joules, actually. Boden also runs slightly generous in knitwear and true to size in outerwear. If you're a size 12 in Boden jersey, you'll likely be a 12 in Joules jersey too. Both brands cater to a similar customer base and have comparable fit philosophies.

Seasalt Cornwall – Runs more consistently true to size than Joules across all categories. Seasalt's sizing is refreshingly reliable—your usual UK size should work across their entire range. Their cuts are slightly more relaxed than contemporary high street but not as generously cut as Joules knitwear can be.

White Stuff – Very similar sizing to Joules, particularly in knitwear which runs generous. White Stuff customers often find they size down in jumpers and jersey pieces. Their smarter, structured pieces run true to size, just like Joules.

Fat Face – Tends to run slightly larger than Joules overall. If you're between sizes in Joules, you'll almost certainly want to size down in Fat Face. Their casualwear is cut quite generously throughout.

What About Joules' Petite and Tall Ranges?

Joules offers petite sizing on selected styles, which is brilliant if you're 5'3" or under. The petite range isn't just shorter—it's properly proportioned with adjusted sleeve lengths and bodice measurements. If standard Joules runs slightly large on you and you're petite, definitely try their petite line before sizing down, as sizing down in regular often means the proportions won't work.

Unfortunately, Joules doesn't currently offer a dedicated tall range, which is frustrating for taller women. Their standard sizes can run short in the sleeves and body length, particularly on fitted styles. If you're over 5'8", you might find brands like Lands End or M&S better for tall proportions in a similar aesthetic.

Where Joules Fits in Your Wardrobe Mix

If you're building a wardrobe that includes Joules alongside other brands, here's how their sizing compares to popular alternatives:

Joules vs. M&S – M&S runs very true to standard UK sizing, so if you're a 12 in M&S, expect to be a 10-12 in Joules depending on the garment type. M&S sizing is notably more consistent across categories than Joules.

Joules vs. Crew Clothing – Crew Clothing runs similarly to Joules—generous in casual pieces, true in tailored items. These brands have very comparable fits and customer bases. Your Joules size will likely match your Crew size.

Joules vs. Jigsaw – Jigsaw runs more fitted and contemporary than Joules across the board. If you're a size 12 in Joules knitwear (having sized down from your usual 14), you'll probably need a 14 in Jigsaw. Their cuts are sleeker and less forgiving.

Joules vs. Hobbs – Hobbs runs true to size with a more tailored, structured fit. If Joules coats feel snug on you, Hobbs will likely feel similar. Both brands cut their smart pieces for a polished, put-together look rather than a relaxed fit.

Joules vs. Barbour – Barbour's classic wax jackets run famously large (they're designed to layer over country wear), whilst Joules outerwear runs smaller. You might be two sizes smaller in Barbour than in a Joules field coat. Barbour's lifestyle range runs more true to size, similar to Joules' casualwear.

Joules vs. Whistles – Whistles is much more contemporary and fitted than Joules. Expect to size up at least one size in Whistles compared to Joules' casual pieces. Whistles caters to a sleeker, more urban aesthetic.

My Top Tips for Buying Joules

After years of Joules purchases, here's what I've learned:

• Always check the specific garment measurements, not just the size chart. Joules provides detailed measurements for each item on their website—use them.

• Read recent customer reviews. Joules customers are brilliant at noting whether items run large, small, or true. Pay attention to reviews from people with similar measurements to yours.

• Consider the fabric content. Pure cotton jerseys from Joules often stretch with wear, so a snugger fit initially is fine. Structured cotton or linen pieces won't give, so don't size down hoping they'll stretch.

• When in doubt, size up for layering pieces. Joules is a country brand—their coats and jackets are designed to wear over jumpers. If you're between sizes on outerwear, go larger.

• Use their free returns policy liberally. Joules offers free returns within 28 days, so don't hesitate to order two sizes if you're genuinely unsure.

The Better Way to Get Joules Sizing Right Every Time

Right, here's where I need to tell you about something that's genuinely revolutionised how I shop for Joules and every other brand: proper sizing tools that match your measurements to specific brands.

I used to spend ages scrolling through Joules reviews trying to figure out if I needed a 10 or a 12, ordering both sizes "just to be safe," then dealing with returns. The hassle, the waiting for refunds, the environmental waste of all those packages going back and forth—it was ridiculous.

Tellar.co.uk completely solved this problem. It's the UK's leading sizing tool that matches your body measurements exactly to over 1,500 brands—including Joules and all the comparison brands I've mentioned in this post.

Here's how it works:

• Measure yourself once using your bust, waist, and hip measurements (or input a size from a brand that fits you perfectly)

• Use the Store Size Lookup tool to find your precise size in Joules—and you can check whether you need a 10 in their jersey but a 12 in their coats

• It's completely free, no downloads needed, works straight in your browser

The absolute game-changer? You can compare your Joules size to your size in M&S, Boden, White Stuff, or any other brand you regularly buy. So you'll know exactly how Joules sizing relates to brands that already fit you well. No more guessing, no more frustrating returns.

The Tellar Fashion Hub: Your Sizing Questions Answered

Beyond the sizing tool, Tellar has built this incredibly useful Fashion Hub—a library of free posts covering every sizing and style question, written by people who actually understand fit and fashion. It's genuinely unbiased (no brand partnerships), which means you get honest recommendations.

For more sizing guidance, I'd recommend:

• The Ultimate Clothing Sizing Guide – essential reading before buying anything online

• Jeans Trends 2026 – if you're looking at Joules denim

• Ultimate Guide to Jackets – crucial if you're buying Joules' famous field coats or waterproofs

My Final Thoughts on Joules Sizing

To directly answer the question: no, don't automatically size up in Joules. The brand runs true to generous depending on the category, which means sizing up could leave you swimming in fabric, particularly in their knitwear and jersey pieces.

Instead, take your measurements, check them against Joules' specific garment measurements on their website, and consider the garment type. Knitwear and jersey? Consider sizing down. Tailored coats and structured pieces? Stick with your usual size or size up if you're between sizes.

And please, use Tellar to check your Joules size before you order. It takes the guesswork out completely and means you'll get the right size first time. Trust me, it's so much better than playing the returns game.

Have you found Joules sizing tricky? What's been your experience? I'd love to hear whether you've needed to size up, down, or stay true to size!