Ydauk shoe size guide for UK shoppers
Measure both feet in centimetres, find your foot length in the YDA conversion table below, and order that UK size. That is the whole process. If your foot measures 26.5 cm, you are a UK 8 in most Ydauk performance styles. If you land between two rows, size up rather than down, because performance shoes need roughly a thumb’s width of toe room to accommodate foot swelling during wear. Measure in the evening, standing with your full weight on the foot, and always measure both feet before ordering.
Key takeaways
Measure both feet in the evening, use the larger measurement, and match it to the Ydauk cm chart. That single habit resolves the majority of sizing errors before they happen.
| Point | Details |
|---|---|
| Measure in the evening | Feet are at their largest after daily activity; evening measurement gives the most accurate result. |
| Always use the larger foot | Feet often differ; ordering for the smaller foot risks a shoe that is too tight. |
| Size up between sizes | For performance use, a thumb’s width of toe room prevents discomfort from foot swelling. |
| Check the product page fit notes | Toebox shape, midfoot volume, and customer reviews reveal model-specific sizing behaviour. |
| Ydauk support is available | Contact Ydauk by phone or the website contact form for personalised size advice before ordering. |
Table of Contents
- How to read the Ydauk shoe size guide and conversion chart
- How to measure your foot length and width at home
- What to do when you fall between two sizes
- What to check on each Ydauk product page before ordering
- Ordering, VAT, delivery, and returns in the UK
- Common sizing mistakes and how to fix them quickly
- Buying Ydauk shoes online: a practical perspective
- Ydauk sizing support: where to get help before you order
- Sources
How to read the Ydauk shoe size guide and conversion chart
Foot length in centimetres is more reliable than regional labels because internal shoe lengths vary between brands and models even when the printed UK or EU size is identical. Ydauk uses centimetre-based internal lengths as the primary sizing reference, which means your measured foot length in cm is the number that matters most.
EU and US columns are secondary references. Always confirm against the cm column. For size-specific cross-checks, Ydauk publishes dedicated conversion pages, including a shoe size 39 conversion guide and a shoe size 40 breakdown, which map labelled sizes to their centimetre equivalents.
Men’s, women’s, and unisex notes: Ydauk’s performance range is largely unisex by last shape, but women’s models sometimes run a half-size narrower through the midfoot. Check the individual product page for a “size and fit” note before ordering. The men’s foot size chart on the Ydauk blog gives additional men’s-specific conversion detail.
UK shoe widths use letter codes: C and D for narrower fits, E for standard, EE and above for wider. Width letters correspond to progressively larger forefoot measurements, and choosing the right width can matter as much as length for Ydauk’s foot-health-focused designs.

How to measure your foot length and width at home
Ydauk’s own home measurement guide recommends evening measurement, weight-bearing stance, and recording the larger foot. Follow these steps exactly.
- Prepare. Put on the socks you plan to wear with your Ydauk shoes. Measure in the evening, when feet are at their largest after a day of activity.
- Set up. Place a sheet of A4 paper on a hard, flat floor against a wall or skirting board.
- Stand and trace. Stand with your heel touching the wall. Trace around your foot with a pencil held vertically, keeping it flush against the skin.
- Mark the longest point. Draw a straight line from the back of the heel trace to the tip of the longest toe.
- Measure in centimetres. Use a ruler to measure that line. Record the number.
- Repeat for both feet. Feet often differ by 0.5 cm or more. Measure both and note the larger figure.
- Measure width. Wrap a soft tape measure around the widest part of your forefoot with your full weight on the foot. This forefoot circumference helps you judge whether a standard-width Ydauk last suits you or whether you need to consider a wider option.
Pro Tip: Repeat the trace twice and take the longer measurement. A single trace can underestimate length if the pencil angle drifts. Measuring with the exact sock thickness you plan to wear gives the most accurate result.
What to do when you fall between two sizes
Size up. For Ydauk’s performance and comfort styles, a slightly longer shoe is almost always the better call. Foot volume increases during walking and running, and a shoe that fits snugly in the morning can feel tight by the afternoon.
Decision rules at a glance:
- Size up if your measurement falls within 3 mm of the next size boundary, if you have long toes relative to your foot length, if you plan to use the shoes for running or extended walking, or if you use custom orthotics.
- Size down only if your foot is noticeably narrow and the larger size creates heel slippage you cannot correct with lacing.
- Left/right difference: always order for the larger foot. A thin heel pad or half-insole can take up slack in the smaller shoe without affecting fit in the larger one.
- Orthotics: a full-length orthotic typically requires sizing up by half a UK size to preserve toe room. Measure your foot with the orthotic in place before consulting the chart.
- Performance use: running shoes often need roughly a half-size increase compared with street shoes to allow for swelling and movement. The same logic applies to Ydauk’s performance range.
Pro Tip: If you are genuinely unsure between two sizes, order both and do a walk test at home on a clean floor. Check for heel lift, toe contact at the front, and whether the midfoot feels locked in. Return the size that fails those three checks.
What to check on each Ydauk product page before ordering
Ydauk’s product pages carry fit notes that go beyond a simple size chart. Before you order, look for these:
- Toebox shape: described as rounded, tapered, or wide. A tapered toebox suits narrower feet; a rounded or wide toebox suits broader forefoot shapes.
- Midfoot volume: some Ydauk styles have a lower-volume midfoot that suits a medium-width foot. If your forefoot circumference is on the wider side, this is the note to check.
- Last type and cushioning stack: a higher cushioning stack can slightly reduce internal volume. If a model has a thick midsole, your foot sits higher inside the shoe and the effective width can feel narrower.
- Customer fit notes: scroll to customer reviews and filter for comments about fit. Consistent mentions of “runs narrow” or “runs long” across multiple reviews are a reliable signal.
The Ydauk technology page explains the construction principles behind each range, which helps you understand why two models at the same UK size can feel different. For court and multi-sport use, the fit priorities differ from everyday wear. A comparison of padel shoes versus tennis shoes illustrates how activity type shapes the fit requirements you should look for.
Ordering, VAT, delivery, and returns in the UK
All Ydauk prices are displayed inclusive of UK VAT, so the price you see is the price you pay. Check stock availability on the product page before adding to your basket, as some models are subject to limited availability.
Ordering and delivery:
- Confirm your size using the cm chart before checkout.
- VAT-inclusive pricing applies at checkout with no hidden additions.
- Dispatch and delivery windows are listed at checkout and in your order confirmation email.
Returns and exchanges:
- If the size is wrong, contact Ydauk customer service via the phone number or contact form on the website as soon as the shoes arrive.
- Repack the shoes in their original box with all packaging intact. Worn shoes cannot be returned unless faulty.
- Request an exchange for a different size rather than a refund if the style is correct and only the size is wrong. This is faster than a full refund and reorder.
- Keep your order confirmation and any dispatch email as proof of purchase throughout the process.
Common sizing mistakes and how to fix them quickly
Mistakes that cause the wrong size:
- Measuring only one foot and assuming both are the same.
- Measuring while seated, which shortens the apparent foot length by up to 5 mm.
- Ignoring sock thickness, then wearing thicker socks than the ones used during measurement.
- Reading the EU column on the chart and ordering by that label rather than by the cm measurement.
Quick fixes once the shoes arrive:
- Heel slippage: try a heel-lock lacing pattern before concluding the shoe is too large. Thread the lace through the top eyelet loop to create a locked ankle collar.
- Toe pressure: a thin, trim insole raises the foot slightly and can relieve pressure on the longest toe without changing the shoe size.
- General looseness: a thicker performance sock often resolves minor volume issues in the forefoot and midfoot.
- Persistent discomfort: contact Ydauk customer service. The team can advise on whether a different size or a different model suits your foot shape better.
Pro Tip: Wear your Ydauk shoes indoors on a clean surface for 20 minutes before deciding whether to exchange. Fit impressions change once the foot warms up and the shoe flexes slightly.
Buying Ydauk shoes online: a practical perspective
Most sizing problems with online shoe purchases come from one of two sources: measuring while seated, or trusting a labelled size from a different brand. The Ydauk cm-based chart removes the second problem entirely, and the weight-bearing measurement method removes the first. What remains is the between-sizes question, and the answer there is almost always to size up for a performance shoe. A shoe that is 3 mm too long is manageable with lacing. A shoe that is 3 mm too short causes real discomfort within an hour of wear. The measurement steps in this guide take under five minutes and reduce the likelihood of a return significantly. If you are still uncertain after measuring, Ydauk’s customer service team is the right next call, not a guess.

Ydauk sizing support: where to get help before you order
Getting the size right before checkout is easier than managing a return. Ydauk’s YDA technology pages explain the construction and fit characteristics of each range, giving you the product-level detail you need to make a confident choice.

For personalised help, contact Ydauk directly via the phone number or contact form on the website. The team can confirm which size suits your measured foot length, advise on model-specific fit differences, and guide you through an exchange if the first order is not right. Check the full shoe conversion chart for a complete UK/EU/US and cm reference, then place your order with the returns process already in mind.
Sources
- Shoe Width Explained | shoezone Blog
- How to measure shoe size | RunRepeat
- How To Measure Shoe Size For Runners in 2026 - Best 5 Steps to Find the Right Fit