Convert EU footwear sizes into reliable US matches. Use category charts and smart fit adjustments. See results, graphs, exports, and practical sizing guidance instantly.
The graph maps EU sizes against the selected US category. Your converted point is highlighted when a result is available.
| EU Size | US Women | US Men | US Kids | Estimated Foot Length |
|---|---|---|---|---|
| 36 | 5.5 | 3.0 to 3.5 | 4Y | 22.30 cm |
| 38 | 7.5 | 5.0 to 5.5 | 5.5Y | 23.60 cm |
| 40 | 9.0 | 7.0 to 7.5 | 7Y | 24.90 cm |
| 42 | 10.5 | 8.5 | Not typical | 26.20 cm |
| 44 | 12.0 | 10.0 | Not typical | 27.50 cm |
1. Chart interpolation: The calculator uses reference conversion points for women, men, and kids. If your EU size falls between two chart entries, it estimates the US size with linear interpolation.
Formula: US raw = US1 + ((EU - EU1) / (EU2 - EU1)) × (US2 - US1)
2. Fit adjustment: The tool then applies a small fit modifier. Snug subtracts 0.25. Regular adds 0.00. Roomy adds 0.25.
3. Rounding rule: You can round to the nearest half size, nearest whole size, or keep the exact decimal value.
4. Foot length estimate: Foot length is estimated from a separate EU to centimeter chart, then converted to inches with inches = centimeters / 2.54.
Buying shoes online can feel risky. Brands label sizes differently. A European size may not match one US number exactly. This calculator reduces that confusion. It converts EU sizes into practical US estimates for men, women, and kids. It also adds fit preference, rounding rules, and foot length guidance. That gives shoppers a better starting point before ordering.
A poor size choice causes returns, wasted time, and discomfort. Tight shoes can press the toes. Loose shoes can slip and rub the heel. Accurate conversion helps you compare sneakers, boots, sandals, and dress shoes across international stores. It also supports gift buying when the original label uses a European scale. A clear conversion tool makes size decisions faster and safer.
This page does more than basic conversion. It uses category-specific reference charts. It can estimate a raw US size and a rounded recommendation. It also shows foot length in centimeters and inches. The graph helps users see where the chosen size sits on the conversion curve. CSV and PDF exports make record keeping easier for stores, resellers, and careful shoppers.
Start with the EU size printed inside a well-fitting pair. Choose the correct target category. Then select your fit preference. Pick snug for close athletic fits. Pick roomy for boots or thicker socks. Use the rounded value for shopping filters. Use the raw value when comparing detailed brand charts. Always review brand notes because lasts and materials change the final feel.
Measure feet at the end of the day. Wear the socks you plan to use. Check whether the product runs narrow or wide. Compare both foot length and converted size when possible. If one foot is longer, fit that foot first. Keep in mind that kids’ sizes change quickly, so leave sensible growing room when needed.
For the best outcome, treat the result as a sizing benchmark, not a guarantee. Manufacturing tolerances, insoles, and design shape can still affect comfort noticeably.
No. It is an informed estimate. Brands use different lasts, materials, and internal shapes. This tool gives a strong starting point, not a perfect guarantee.
US men, women, and kids use different size scales. The same EU size can translate into different US results depending on the target category.
Fit preference adjusts the raw result slightly. Snug lowers the estimate. Roomy raises it. This helps when you plan to wear thin socks, thick socks, or boots.
Use rounded sizes for most shopping filters because stores usually list whole or half sizes. Use the exact value when comparing detailed brand charts.
Yes, but review brand guidance too. Running shoes often vary by toe box shape, cushioning, and intended sock thickness. A roomy preference can be helpful.
The graph shows the size relationship visually. It helps you see whether your result sits between common chart points or near the edge of the reference range.
Yes. It estimates foot length in centimeters and inches from the entered EU size. That adds another comparison point before you buy shoes online.
Yes. Kids results use child or youth labels such as C and Y. That keeps the result aligned with common US kids size listings.
Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.