Find your perfect sock size using your shoe size or foot length. Convert between US Men's, US Women's, EU, and UK sizing systems with our comprehensive sock size chart and care guide.
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Measure from heel to longest toe in centimeters
Your Sock Size
M
Medium - Fits most standard sizes
Size Description
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What this size means
Input Used
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Your measurement
🧦 Recommended Sock Styles
These sock styles work well for your size.
📏 How to Measure Your Foot
Place a piece of paper on a hard floor against a wall.
Stand on the paper with your heel touching the wall.
Mark the longest part of your foot (usually the tip of your big toe).
Measure the distance from the edge of the paper to the mark in centimeters.
Repeat for both feet and use the larger measurement.
📋 Complete Sock Size Conversion Chart
Use this chart to find your sock size based on any measurement system. The highlighted row shows your matched size when using the calculator above.
Sock Size
US Men's
US Women's
EU
UK
Foot Length (cm)
XS
-
-
-
-
Under 22.5
S
5 - 7
4 - 6
35 - 38
3 - 5
22.5 - 24
M
7 - 9
6 - 8
38 - 41
5 - 7.5
24 - 26
L
9 - 11.5
8 - 10.5
41 - 44
7.5 - 10
26 - 28
XL
11.5 - 14
10.5 - 13
44 - 47
10 - 12.5
28 - 30
XXL
14+
-
47+
12.5+
30+
💡 How to Read the Chart
Sock Size — The standard letter size used by most sock manufacturers.
US Men's / US Women's — Corresponding US shoe sizes. Note that US Men's and Women's sizes are on different scales.
EU — European shoe sizes (continental sizing).
UK — United Kingdom shoe sizes.
Foot Length (cm) — Your actual foot length in centimeters for the most accurate fit.
Tip: If your measurement falls on the boundary between two sizes, we recommend choosing the larger size for a more comfortable fit.
🧺 Sock Care Guide
Proper care can extend the life of your socks, keeping them comfortable and looking great for longer. Follow these guidelines based on your sock material.
🧦 Cotton Socks
Cotton socks are the most common and easiest to care for.
Machine wash warm (40°C / 105°F) with similar colors.
Avoid bleach — it weakens cotton fibers.
Tumble dry on low or air dry to prevent shrinkage.
Do not iron; high heat can damage elastic fibers.
🏃 Athletic & Performance Socks
Made from synthetic blends (polyester, nylon, spandex) for moisture-wicking.
Wash in cold water to preserve elastic properties.
Turn inside out to protect the outer fabric.
Avoid fabric softeners — they clog moisture-wicking fibers.
Air dry preferred; high heat degrades spandex.
🧶 Wool Socks
Merino wool and other wool blends need gentle care.
Hand wash or machine wash on delicate cycle with cold water.
Use a mild detergent designed for wool or delicates.
Never wring or twist — gently squeeze out excess water.
Lay flat to dry away from direct heat or sunlight.
👶 Cashmere & Luxury Socks
Premium fibers require extra attention for longevity.
Hand wash only in lukewarm water with specialized detergent.
Soak for 15-20 minutes, then rinse gently.
Roll in a towel to absorb moisture, then reshape.
Store folded (not hung) to maintain shape.
🔄 General Sock Care Tips
Extend the life of all your socks with these universal tips.
Sort socks by color before washing to prevent dye transfer.
Use a mesh laundry bag to prevent losing small socks.
Avoid over-drying — remove from dryer while slightly damp.
Replace socks every 6-12 months for optimal comfort and support.
⚡ Quick Care Symbols Guide
Understanding care labels on your socks.
🧺 Machine Wash — Tub symbol with water level indicates temperature.
🔄 Bleach — Triangle: empty means any bleach OK; crossed out means no bleach.
🌀 Tumble Dry — Circle in square with dots: more dots = higher heat.
🔥 Iron — Iron symbol: dots indicate temperature (1 = low, 3 = high).
⚠️ Important: Always check the care label on your specific socks before washing. Different blends and brands may have specific requirements. When in doubt, use cold water and gentle cycle to minimize damage.
🎯
Accurate Sizing
Get precise sock size recommendations based on your shoe size or exact foot length measurement in centimeters.
🌍
Multi-System Support
Convert seamlessly between US Men's, US Women's, EU, and UK sizing systems. Works with international sock brands.
📋
Complete Reference
Full sock size conversion chart included so you can see all sizes at a glance. Plus a detailed care guide.
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Style Recommendations
Get personalized recommendations for sock styles — crew, ankle, knee-high, no-show, and more — based on your size.
Finding the right sock size is essential for comfort, foot health, and performance. Socks that are too small can bunch up, cause blisters, and restrict circulation, while socks that are too large can slip down, create uncomfortable folds, and fail to provide proper cushioning where you need it most.
Sock sizes are typically based on shoe size or foot length. Most manufacturers use a letter-based sizing system (XS through XXL) that corresponds to a range of shoe sizes. However, sizing can vary between brands, so it's always a good idea to check a specific brand's size chart when available.
Why Sock Size Matters
Wearing the correct sock size isn't just about comfort — it affects your overall foot health. Properly fitted socks provide:
Better Cushioning — The padding aligns with the right parts of your foot (heel, ball, toes) for impact absorption.
Moisture Management — Correctly sized socks wick moisture more effectively, reducing the risk of blisters and fungal infections.
Improved Circulation — Socks that are too tight can restrict blood flow, especially around the ankle and calf.
Longer Lifespan — Socks that fit properly experience less stretching and friction, lasting longer between replacements.
Difference Between Men's and Women's Sock Sizing
Men's and women's socks are sized differently because foot shapes and average sizes differ. Women's socks typically cover a smaller size range (XS to XL) and are cut narrower, especially in the heel and toe areas. Men's socks generally span from S to XXL and have a wider, roomier fit. Some unisex socks exist but usually only cover the overlapping size ranges (typically M to L).
When using this calculator, make sure to select the correct gender-specific system (US Men's vs. US Women's) for the most accurate results. If you're buying unisex socks, use your foot length in centimeters as the most reliable measurement.
Sock Sizing Tips & Tricks
📏 Measure Both Feet
Most people have one foot slightly larger than the other. Always measure both feet and use the larger measurement when selecting your sock size.
🧦 Consider Sock Thickness
Thick cushioned socks (like hiking or boot socks) may require sizing up, while thin dress socks fit true to size. If you're between sizes, consider the sock's intended use.
🏋️ Activity Matters
Different activities call for different sock styles. Athletic socks provide extra cushioning in high-impact areas. Compression socks improve circulation during long periods of sitting or standing.
📊 Brand Variations
Not all sock brands size the same way. Premium brands may use European sizing that runs slightly different. Always check the brand's specific size chart when available.
🔄 Replace Regularly
Socks lose their elasticity and cushioning over time. Replace everyday socks every 6 months and athletic socks every 3-4 months for optimal performance.
🌡️ Seasonal Adjustments
Your feet can swell slightly in warm weather or after long periods of standing. Consider this when selecting sock sizes for summer vs. winter wear.
Frequently Asked Questions
How do I know what sock size to buy?
The easiest way is to use your shoe size or foot length in centimeters. Our calculator above can instantly tell you your sock size. Generally, if you wear a US Men's 9, you'll need a size L (Large) sock. You can also measure your foot length by standing on a piece of paper and marking the longest point from heel to toe.
Are men's and women's sock sizes the same?
No, they are different. Men's and women's socks are sized on different scales because foot shapes and average sizes differ. A US Women's size 8 corresponds to a size M sock, while a US Men's size 8 also corresponds to a size M — but the foot dimensions are different. Women's socks are typically narrower in the heel and toe. Use the gender-specific charts in our calculator for the most accurate fit.
What if my measurement is between two sock sizes?
If your foot length or shoe size falls on the boundary between two sock sizes, we recommend choosing the larger size. A slightly larger sock can be more comfortable than one that's too tight. Socks that are too small can cause blisters, restrict circulation, and wear out faster. Plus, many socks have some stretch and can accommodate a range of sizes comfortably.
How do I measure my foot for socks?
To measure your foot length at home: (1) Place a piece of paper on a hard floor against a wall. (2) Stand on the paper with your heel touching the wall. (3) Mark the longest point of your foot (usually the tip of your big toe). (4) Measure the distance from the edge of the paper to the mark in centimeters. (5) Repeat for both feet and use the larger measurement. Enter this value into our foot length calculator for an accurate size recommendation.
Do I need different sock sizes for different activities?
Yes, potentially. While your base sock size remains the same, different activities may call for different sock styles and thicknesses. For example, hiking socks are often thicker and more cushioned, which might make your usual size feel snug — some people size up for hiking socks. Dress socks are thinner and fit true to size. Athletic socks are designed with specific cushioning zones. Always consider the sock's intended use and construction when choosing a size.
How often should I replace my socks?
Most sock manufacturers recommend replacing everyday socks every 6 to 12 months. Athletic socks worn frequently may need replacement every 3 to 6 months. Signs that it's time to replace your socks include: thinning fabric (you can see light through the heel or toe), loss of elasticity (socks won't stay up), visible holes or worn spots, persistent odors even after washing, and reduced cushioning (especially in athletic socks).
⚠️ Important Note: Sock sizes can vary between brands and manufacturers. This calculator provides standard size conversions based on industry averages. For the best fit, always refer to the specific brand's size chart and consider the sock's intended use (casual, athletic, formal). If you're between sizes or unsure, it's generally better to size up for comfort.