True-to-Size Millimeter Sizing Comparison
Dansko Professional vs Dansko Sophie
Detailed size conversion chart, cavity measurements in millimeters, and crowd-sourced fit advice for choosing your perfect size.
Interactive Size Converter
Select what size you wear in the Professional to see your calculated size in the Sophie.
Complete Size Conversion Matrix
Direct millimeter-calibrated mapping comparing all available sizes between both shoes.
| Professional (US) | Internal Cavity | Sophie Equivalent | Match Accuracy | Fit Difference |
|---|---|---|---|---|
| US 4.5 | 233 mm | US 3.5 | 30% | +5.9 mm |
| US 5 | 237 mm | US 3.5 | 77% | +1.9 mm |
| US 5.5 | 240 mm | US 4 | 77% | +1.9 mm |
| US 6 | 243 mm | US 4.5 | 65% | +2.9 mm |
| US 6.5 | 247 mm | US 5 | 77% | +1.9 mm |
| US 7 | 250 mm | US 5.5 | 77% | +1.9 mm |
| US 7.5 | 253 mm | US 6 | 65% | +2.9 mm |
| US 8 | 257 mm | US 6.5 | 77% | +1.9 mm |
| US 8.5 | 260 mm | US 6.5 | 87% | -1.1 mm |
| US 9 | 267 mm | US 7.5 | 77% | +1.9 mm |
| US 9.5 | 270 mm | US 8 | 77% | +1.9 mm |
| US 10 | 273 mm | US 8.5 | 65% | +2.9 mm |
| US 10.5 | 277 mm | US 9 | 77% | +1.9 mm |
| US 11 | 280 mm | US 9.5 | 77% | +1.9 mm |
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Frequently Asked Questions
How does the Professional size compare to the Sophie?
Both shoes share a very similar length profile. We recommend ordering your standard size in both. The Professional has an internal fit offset of 0.12mm compared to -0.96mm for the Sophie.
Do these shoes fit wide feet comfortably?
The Professional has a standard medium width profile, while the Sophie is snug/narrow.