Sock Size Calculator
Convert US shoe sizes and foot measurements into the correct sock size. Ensure your socks fit comfortably from toe to calf.
Convert inches to cm: inches × 2.54.
Recommended Size
Medium
Sock size 9–11
Coverage
6.5–9 US Men
EU 39–42 EU
Foot length 24.5–26.5 cm
Fit Notes
Max calf stretch ~36 cm.
This size balances shoe size and foot length for a comfortable fit.
How to Use This Calculator
Measure your foot
Trace your foot on paper and measure heel-to-toe in centimeters for accuracy.
Enter shoe size and foot length
Provide your US shoe size (men’s or women’s) and foot length. Add calf circumference if shopping for knee-high socks.
Review your sock size
Use the recommended size and notes to choose socks that fit comfortably without slipping or squeezing.
Formula
Sock size ≈ (US Men shoe size × 1.5) for men's socks
Sock size ≈ (US Women shoe size + 1) for women's socks
Our calculator cross-references shoe size, foot length, and calf circumference with an industry-standard sock size table for accuracy.
Example: US Men 9, foot length 26 cm → Sock size 10–13 (Large).
About the Sock Size Calculator
Finding the right sock size prevents heel slipping, toe bunching, and tight calves. This calculator gives you a reliable recommendation using multiple measurements.
When to Use This Calculator
- Replacing socks: Ensure your next multipack fits as expected.
- Buying compression socks: Match sizing before ordering medical or athletic styles.
- Gifts: Convert the recipient’s shoe size into sock sizing.
- Uniforms: Standardize sock sizing for athletic teams or workplaces.
Why Use Our Calculator?
- ✅ Dual inputs: Uses both shoe size and foot length for better accuracy.
- ✅ Calf-friendly: Optional calf measurement helps with tall sock selection.
- ✅ Universal ranges: Shows US and EU conversions.
- ✅ Mobile friendly: Check sizes while shopping in-store.
Common Applications
Retail associates: Give customers quick, confident sizing advice.
Sports teams: Order performance socks in correct sizes for the roster.
Healthcare providers: Recommend compression sock sizing to patients.
Tips for Best Results
- Match sock height to your use case (ankle, crew, knee-high).
- Add 0.5–1 cm foot length margin if you prefer relaxed fits.
- Compression socks should feel snug but not painful—use calf measurement.
- Always follow brand-specific size charts for specialty socks.
Frequently Asked Questions
Can men wear women’s socks and vice versa?
Yes. Use the calculator to cross-reference sizes and choose the closest sock range regardless of label.
What if my measurements span two sizes?
Size up for casual socks if you are between sizes. For compression or performance socks, size down for a secure fit.
Do sock sizes differ by style?
Yes. Thick wool socks, compression socks, and no-show socks can fit differently. Use this calculator as a baseline, then consult brand guidance.
How accurate is calf stretch?
The calculator provides typical maximum stretch. If your calf exceeds the limit, look for wide-calf or plus-size socks.