Sock sizes in the UK follow your shoe size. If you wear a UK size 9 shoe, you need socks whose size range includes UK 9 — most men's socks cover UK 6–11, most women's socks cover UK 4–7, and larger feet need a dedicated UK 11–14 fit. That's the short answer. The long answer — EU and US conversions, kids' sizes, what 'one size' really means, and how socks should actually fit — is all below, with every chart you'll ever need.
Quick answer: what size socks am I?
Your sock size = your UK shoe size. Men's UK shoe 6–11 → standard men's socks (EU 39–46). Women's UK shoe 4–7 → standard women's socks (EU 37–41). UK shoe 11–14 → big-foot socks. Kids' socks are sold in shoe-size bands such as UK 9–12 or UK 12.5–3.5.
Contents
- How UK sock sizes work
- Men's sock size chart
- Women's sock size chart
- Kids' sock size chart
- Socks for UK 11–14 feet
- What 'one size' means
- How to measure your feet
- How socks should fit
- Sizing by sock type
- Common sizing mistakes
- FAQs
- Expert verdict
How Do UK Sock Sizes Work?
UK sock sizes are expressed as shoe-size ranges, not individual sizes. Because knitted fabric stretches, one sock can comfortably fit several shoe sizes, so manufacturers label socks with a span — UK 6–11 for men, UK 4–7 for women, UK 9–12 for children — rather than a single number.
This is different from shoes, where half a size matters. With socks, the knit does the fine-tuning: the heel pocket, elasticated arch and ribbed cuff adjust to your foot within the stated range. What matters is that your shoe size sits inside the range printed on the pack. If you're at the very top of a range (say UK 11 in a 6–11 sock), the sock will still fit, but if you're between ranges you'll usually get a better fit sizing up — more on that in the fit section.
If you're new to sock shopping generally, our complete guide to sock types explains every style from trainer liners to 1.8 tog thermals.
Men's Sock Size Chart UK (UK to EU & US Conversion)
Standard men's socks in the UK fit shoe sizes 6–11, which converts to EU 39–46 and US 7–12. Here is the full conversion including foot length in centimetres:
| UK Shoe Size | EU Size | US Size (Men) | Foot Length (approx.) | Sock Size to Buy |
|---|---|---|---|---|
| UK 6 | EU 39–40 | US 7 | 24.5 cm | UK 6–11 |
| UK 7 | EU 40–41 | US 8 | 25.5 cm | UK 6–11 |
| UK 8 | EU 42 | US 9 | 26.5 cm | UK 6–11 |
| UK 9 | EU 43 | US 10 | 27.5 cm | UK 6–11 |
| UK 10 | EU 44–45 | US 11 | 28.5 cm | UK 6–11 |
| UK 11 | EU 46 | US 12 | 29.5 cm | UK 6–11 |
| UK 12 | EU 47 | US 13 | 30.5 cm | UK 11–14 |
| UK 13 | EU 48 | US 14 | 31.5 cm | UK 11–14 |
| UK 14 | EU 49–50 | US 15 | 32.5 cm | UK 11–14 |
Most men in Britain fall inside the UK 6–11 band, which is exactly the range our cushioned cotton multipacks are knitted for:
For everyday wear, cushioned trainer socks are the most versatile choice — our trainer socks guide compares every option. Cold feet? Read the tog ratings guide before winter stock sells through.
Women's Sock Size Chart UK (UK to EU & US Conversion)
Standard women's socks in the UK fit shoe sizes 4–7 (EU 37–41, US 6–9), with some cotton-rich styles knitted for UK 4–6.5.
| UK Shoe Size | EU Size | US Size (Women) | Foot Length (approx.) | Sock Size to Buy |
|---|---|---|---|---|
| UK 3 | EU 35.5–36 | US 5 | 22 cm | UK 4–6.5 (stretch down) |
| UK 4 | EU 37 | US 6 | 23 cm | UK 4–7 / 4–6.5 |
| UK 5 | EU 38 | US 7 | 24 cm | UK 4–7 / 4–6.5 |
| UK 6 | EU 39–40 | US 8 | 24.5 cm | UK 4–7 / 4–6.5 |
| UK 7 | EU 40–41 | US 9 | 25.5 cm | UK 4–7 |
| UK 8+ | EU 42+ | US 10+ | 26.5 cm+ | Men's UK 6–11 fits well |
Insider tip: women with UK size 7.5+ feet often get a better fit from men's UK 6–11 socks than from stretched women's pairs — the heel pocket sits where it should and the cuff doesn't dig in.
Browse the full range in our women's socks buying guide, or see why sherpa styles top our best bed socks UK ranking.
Kids' Sock Size Chart UK
Children's socks are sold in shoe-size bands that follow UK infant and junior shoe sizing. A child's sock size is simply their current shoe size — but because kids' feet grow around half a size every 3–4 months, it's smart to buy the band they're growing into, not out of.
| Age (guide) | UK Shoe Size | EU Size | Foot Length |
|---|---|---|---|
| 1–2 years | UK 3–5.5 (infant) | EU 19–22 | 11–13 cm |
| 3–5 years | UK 6–8.5 (infant) | EU 23–26 | 14–16 cm |
| 5–8 years | UK 9–12 | EU 27–30 | 16.5–18.5 cm |
| 8–12 years | UK 12.5–3.5 (junior) | EU 31–36 | 19–22.5 cm |
| 12+ years / teens | UK 4–6.5 | EU 37–40 | 23–25 cm |
Once teenagers reach UK 4+, they move into adult sizing — girls' trainer socks in our range are knitted for exactly this crossover stage:
Buying for September already? Our kids' school socks guide and girls' school socks guide cover multipack value for the whole term.
Socks for Big Feet: UK Size 11–14
If your shoe size is UK 11.5 or above, standard 6–11 socks are the wrong buy. Overstretched socks wear through at the toe in weeks, the heel pocket ends up under your arch, and the cuff grips too tightly. A dedicated UK 11–14 sock is knitted longer in the foot with a repositioned heel, so it fits like a standard sock does on a size 9 foot.
We've written a full deep-dive on this: Socks for Big Feet UK — where to buy size 11–14 socks that actually fit.
What Does 'One Size UK 6–11' Actually Mean?
'One size' on a UK sock label means one stretch range, not one fixed size. A UK 6–11 sock is typically knitted to a relaxed foot length of around 24–25 cm and engineered to stretch to roughly 30 cm without distorting. Within that band the fit is genuinely good; outside it, problems start.
- Bottom of the range (UK 6): expect a slightly looser cuff and a touch of spare fabric at the toe — harmless in cushioned styles.
- Middle of the range (UK 7–9): the sweet spot. Heel pocket, arch band and cuff all sit exactly where designed.
- Top of the range (UK 10–11): a snugger fit. Fine for quality knits; cheap thin socks may feel tight and wear faster.
- Beyond the range (UK 11.5+): move to a UK 11–14 sock. No standard sock stretches that far gracefully.
How to Measure Your Feet for Socks
You only need a sheet of paper, a pencil and a ruler — and two minutes.
Step 1
Stand on the paper in the socks you'd normally wear, weight evenly on both feet, late in the day (feet swell slightly by evening).
Step 2
Mark the tip of your longest toe and the back of your heel. Do both feet — most people have one slightly longer foot.
Step 3
Measure the longer distance in centimetres and match it to the foot-length column in the charts above. That's your sock size.
The same trick works for hats, incidentally — see how to measure your head for a hat if you're completing the wardrobe.
How Should Socks Fit? The 5-Point Checklist
A properly fitting sock feels invisible. Run through this checklist with any new pair:
✅ Heel pocket on your heel — not riding up your Achilles or slipping under your arch.
✅ Flat toe seam — no bunching or pressure on the toes; around 5 mm of ease at the tip.
✅ Cuff grips without marking — deep red rings after wear mean the sock is too small (or you need a non-binding style).
✅ No slipping inside the shoe — a sock that migrates down is either too big or has a worn-out elastic arch.
✅ No fabric folds underfoot — excess material under the sole causes rubbing and blisters on long days.
Sensitive feet, swelling or diabetes? Choose a non-binding, wide-top sock in your normal size range rather than sizing up. Our men's diabetic socks and ladies' diabetic socks (from £4.99) are cut loose through the leg with a soft wide top — the full picture is in our diabetic socks guide.
Sock Sizing by Type: Does It Change?
The size range stays the same across sock types, but the fit character changes. Here's how to read that when choosing:
| Sock Type | Typical UK Range | Fit Notes | Best For |
|---|---|---|---|
| Trainer socks | Men 6–11 / Women 4–7 | Close fit; low cuff must grip well | Everyday, trainers, summer |
| Cushioned sports socks | Men 6–11 / Women 4–7 | Terry loops add bulk — true to size | Sport, walking, work boots |
| Thermal socks | Men 6–11 | Brushed lining feels snugger — don't size down | Winter, outdoor work |
| Sherpa bed socks | Women 4–6 / Men 6–11 | Loose lounge fit by design | Evenings, cold feet at night |
| Diabetic / non-binding | Men 6–11 / Women 4–7 | Wide top, loose leg — buy your normal range | Sensitive feet, circulation |
| Big-foot socks | Men 11–14 | Longer foot bed, repositioned heel | UK 11.5–14 feet |
| Football fan socks | Men 6–11 | Cushioned crew height — true to size | Match days, casual wear |
Showing your colours this season? Our cushioned fan multipacks in Liverpool red and three other club colourways all run in the standard UK 6–11 range — the fan colour guide has the lot.
5 Sock Sizing Mistakes to Avoid
- Buying UK 6–11 for size 12+ feet. The single most common mistake in Britain. The sock survives a month, not a year. Go UK 11–14.
- Sizing up for comfort. Loose socks fold under the sole and cause blisters. If socks feel tight, the fix is a non-binding top or better cotton — not a bigger size.
- Ignoring EU labels on imported packs. EU 43 is UK 9, not UK 10. Use the conversion charts above before you buy.
- Buying kids' socks to their current size mid-growth-spurt. Buy the band they're growing into; multipacks make this cheap to do.
- Assuming hot washes are harmless. Cotton-rich socks washed at 60°C can shrink up to half a size. Wash at 30–40°C and skip the tumble dryer to keep the labelled fit.
Which Socks Should I Buy? A 20-Second Decision Tree
Shoe size UK 11.5–14? → Big Foot Work Socks, from £7.99.
Man, UK 6–11, everyday wear? → Cushioned Trainer Socks, from £4.99.
On your feet all day at work? → Premium Work Trainer Socks, from £6.99.
Woman, UK 4–7, sport or everyday? → Women's Cushioned Sports Socks, from £7.99.
Cold feet in the evenings? → Fluffy Sherpa Bed Socks, £8.99, or 1.8 Tog Thermals for men.
Sensitive feet or diabetes? → Non-binding ladies' or men's diabetic socks, from £4.99.
Whatever your size, multipacks are where the value is — the maths is broken down in our multipack socks guide, and if your feet run hot in summer, size and fabric advice continues in best socks for sweaty feet.
Sock Size FAQs
What size socks am I in the UK?
Your sock size is the same as your UK shoe size. Buy socks whose printed range includes your shoe size — UK 6–11 for most men, UK 4–7 for most women, UK 11–14 for larger feet.
Are sock sizes the same as shoe sizes in the UK?
Yes. UK socks are labelled by shoe-size range, so a UK 8 shoe wearer needs any sock covering size 8. There is no separate 'sock sizing system' to learn.
What does one size UK 6–11 mean?
It means the sock is knitted to stretch across shoe sizes 6 to 11 (roughly EU 39–46). It fits best in the middle of the range and snugger at the top. Above UK 11, choose a dedicated 11–14 sock.
What sock size is EU 43 in the UK?
EU 43 equals UK 9 (US men's 10). Any UK 6–11 sock fits an EU 43 foot comfortably, sitting right in the sweet spot of the range.
What size are women's socks in the UK?
Standard women's socks fit UK shoe sizes 4–7 (EU 37–41, US 6–9). Some cotton-rich styles run UK 4–6.5. Women with UK 7.5+ feet often fit men's UK 6–11 socks better.
I wear UK size 11 shoes — will UK 6–11 socks fit me?
Yes, UK 11 is inside the range, though the fit will be snug. If you're 11.5 or between sizes, a UK 11–14 sock will fit better and last longer.
What sock size do I need for UK size 12 or 13 feet?
UK size 12 and 13 feet need big-foot socks in the UK 11–14 range. Standard 6–11 socks overstretch, wear through quickly and pull the heel pocket out of position.
What size socks does a 10-year-old need?
Most 10-year-olds wear UK junior shoe sizes 12.5–3.5 (EU 31–36), so buy kids' socks in that band. Check their current shoe size first — growth spurts move fast at this age.
Should I buy socks bigger or smaller than my shoe size?
Neither — buy socks that include your exact shoe size in their range. Oversized socks fold and cause blisters; undersized socks strain seams and dig in at the cuff.
Do socks shrink in the wash?
Cotton-rich socks can shrink up to half a size if washed above 40°C or tumble-dried on high heat. Wash at 30–40°C and air dry to keep the labelled fit.
Are US and UK sock sizes different?
Yes. US men's sizes run one size higher than UK (UK 9 = US 10); US women's sizes run two higher (UK 5 = US 7). Always convert before buying from American size charts.
What size are diabetic socks?
Diabetic socks use the same UK size ranges as standard socks (men 6–11, women 4–7) but are knitted with a non-binding wide top and looser leg. Buy your normal range — never size up for looseness.
How do I measure my foot for socks?
Stand on paper, mark heel and longest toe, and measure the distance in cm. Match that length to the charts above — e.g. 27.5 cm = UK 9 = a UK 6–11 sock.
Why do my socks keep slipping down?
Usually the sock is too big, or the elastic arch and cuff have worn out. Check your size against the chart, and replace pairs older than 12 months of regular rotation — multipacks make refreshing the drawer cheap.
Summary & Expert Verdict
Sock sizing in the UK is simpler than the labels make it look: your sock size is your shoe size, and your only real decisions are which range you fall into and which construction suits the job. Men UK 6–11 and women UK 4–7 cover most of Britain; UK 11–14 exists for the millions of larger feet the high street ignores; kids move through shoe-size bands until they hit adult ranges in their early teens.
Our verdict: measure once, buy the correct range, and buy in multipacks. A drawer of properly fitting cushioned cotton socks costs less than a single takeaway — our multipacks start at £3.99 for women's cotton-rich styles and £4.99 for men's cushioned trainers, scaling to 12-pair packs that sort you out for the year.
Found your size? Sorted.
Cushioned cotton multipacks in every UK size range — from £3.99, with 3, 6, 9 & 12 pair options.
Shop All Socks at Hopoye
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