Updated by the Crib Goch Outdoor Team — based on real customer experience in our Llanberis & Beddgelert stores.
Crocs: people either swear by them or swear at them — but once you’ve owned a pair, you tend to understand the hype. They’re comfy, durable, great for travel, perfect for campsite life… and famously confusing when it comes to sizing.
If you’ve ever wondered why your Crocs arrive with strange US sizes on the sole, or an “M/W” marking that looks nothing like your UK size, don’t panic — we haven’t sent the wrong size. Crocs simply label their footwear differently.
This guide will help you find your perfect fit before ordering from us.
Why Crocs Sizing Confuses People
Crocs display US sizing on the sole, often shown as:
M = Men’s / W = Women’s (e.g., M8 | W10)
So a UK Women’s 7 may arrive labelled M6 | W8 — which throws a lot of people off.
Crocs also come in whole sizes only, and the fit varies slightly by style (Standard, Relaxed, Roomy).
If in doubt, use our Heel-to-Toe chart below — it’s the most accurate way to size Crocs.
Crocs measurements chart
Take a look at the UK Crocs Size Guide below to get the best fit before you place your order with us at Crib Goch Outdoor.
| Customer Heel to Toe Length | 20cm | 21cm | 22cm | 23cm | 24cm | 25cm | 26cm | 27cm | 28cm | 29cm | 30cm | 31cm | 32cm | 33cm | 34cm | 35cm |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UK Women | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 |
| UK Men | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 |
| EU | 33-34 | 34-35 | 36-37 | 37-38 | 38-39 | 39-40 | 41-42 | 42-43 | 43-44 | 45-46 | 46-47 | 48-49 | 49-50 | 50-51 | 51-52 | 52-53 |
| US | M2 | W4 | M3 | W5 | M4 | W6 | M5 | W7 | M6 | W8 | M7 | W9 | M8 | W10 | M9 | W11 | M10 | W12 | M11 | W13 | M12 | W14 | M13 | W15 | M14 | W16 | M15 | W17 | M16 | W18 | M17 | W19 |
| Japan | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 |
| Korea | 210mm | 220mm | 230mm | 240mm | 250mm | 260mm | 270mm | 280mm | 290mm | 300mm | 310mm | 320mm | 330mm | 340mm | 350mm | 360mm |
Heel-to-Toe measurement is the most reliable way to choose your size.
How to Measure for your Crocs.
- Place your foot on a sheet of paper.
- Trace around it, keeping the pen tight to your heel and toes.
- Measure from heel to the tip of your longest toe.
- Match that number to our size chart.
Staff Tip:
Crocs come in whole sizes only, and some styles run slightly big or small. Always check the “Fit” section of the product page.
Which Crocs Fit Should You Choose?
Crocs make different “fit types” across their range:
- Standard Fit – No extra room; secure and snug
- Relaxed Fit – A little wiggle room; still supportive
- Roomy Fit – The classic, wide Crocs feel
If you like classic Crocs comfort, go Roomy. If you prefer a closer, everyday fit, choose Standard.
Crocs Frequently Asked Questions
Do crocs come up big or small?
Most Crocs styles run true to size, but the “Roomy” fit can feel larger if you’re used to more fitted shoes.
If you’re between sizes, most customers choose the smaller option for Classic Clogs, and the larger option for lined or winter versions.
Should you size up in crocs?
It depends on the model:
- Classic Clog (Roomy Fit): Most people do not need to size up. If you’re between sizes, size down.
- Baya / LiteRide / Echo: Generally true to size.
- Lined Crocs: Size up if you’re between sizes (the lining reduces internal space).
For the most reliable fit, check your heel-to-toe length against our size chart and browse: 👉 Shop Crocs
Why is the size printed on my Crocs different from the size I ordered?
Crocs print US sizes on the shoe. Your order is fulfilled using UK sizing, so they won’t match visually — but the shoe you received is the correct UK size.
Do Crocs come in half sizes?
No. Crocs only manufacture whole sizes. If you’re between sizes, choose based on the fit type:
- Roomy fit → size down
- Standard fit → size up
Are Crocs good for wide feet?
Yes — most Crocs are naturally wide and use a Roomy or Relaxed fit. We don’t sell separate “wide” sizes because most customers with wide feet fit comfortably in standard Crocs models.
How should Crocs fit?
For Classic Clogs, you should have:
- Wiggle room at the toes
- A stable heel strap
- No pinching on the sides
- Enough space for feet to swell in warm weather
They’re not meant to feel like trainers — they’re meant to feel easy.
Can Crocs stretch over time?
Yes — Crocs soften slightly with heat and wear. If your new pair feels a touch snug, they often relax within a few uses.
Are Crocs unisex?
Most are. The M/W sizing on the sole simply shows the US men’s and women’s equivalents.
Browse unisex styles here: 👉 Shop All Crocs
Can I return Crocs if they don’t fit?
Yes — if your Crocs aren’t quite right, just use our Returns Policy or contact us at Crib Goch Outdoor. We’re always happy to help swap sizes.
Are crocs true to size?
Mostly, yes — but it depends on the style.
- Sandals & Slides: Typically true to size.
- Classic Clogs (Roomy Fit): Generally true to size, but because they’re wide and spacious by design, some people feel they run large. If you’re between sizes, most customers size down.
- Echo / Baya / LiteRide: Usually true to size with a more secure feel.
- Lined Crocs (Fuzz-lined models): These often fit slightly smaller due to the lining — if you’re between sizes, size up.
Explore our full collection and choose the size confidently using the chart above:
👉 Shop Crocs
👉 Shop All Footwear
If you need personalised advice, just drop us a message or pop into our shops in Llanberis or Beddgelert — we size Crocs for people every week
If Crocs aren’t for you and you’re in need of some help of some the best fitting Hiking and walking shoes then check out this blog post 👉 The Best Fit – Hiking Boot and Walking Shoe Online Guide
