True-to-Size Millimeter Sizing Comparison
Lucky Brand Divahna vs Lucky Brand Eikia Ballet Flat
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 Divahna to see your calculated size in the Eikia Ballet Flat.
Complete Size Conversion Matrix
Direct millimeter-calibrated mapping comparing all available sizes between both shoes.
| Divahna (US) | Internal Cavity | Eikia Ballet Flat Equivalent | Match Accuracy | Fit Difference |
|---|---|---|---|---|
| US 4.5 | 233 mm | US 5 | 63% | +3.1 mm |
| US 5 | 237 mm | US 5.5 | 75% | +2.1 mm |
| US 5.5 | 240 mm | US 6 | 75% | +2.1 mm |
| US 6 | 243 mm | US 6.5 | 63% | +3.1 mm |
| US 6.5 | 247 mm | US 7 | 75% | +2.1 mm |
| US 7 | 250 mm | US 7.5 | 75% | +2.1 mm |
| US 7.5 | 253 mm | US 8 | 63% | +3.1 mm |
| US 8 | 257 mm | US 8.5 | 75% | +2.1 mm |
| US 8.5 | 260 mm | US 8.5 | 90% | -0.9 mm |
| US 9 | 267 mm | US 9.5 | 75% | +2.1 mm |
| US 9.5 | 270 mm | US 10 | 75% | +2.1 mm |
| US 10 | 273 mm | US 10.5 | 63% | +3.1 mm |
| US 10.5 | 277 mm | US 11 | 75% | +2.1 mm |
| US 11 | 280 mm | US 11 | 90% | -0.9 mm |
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Frequently Asked Questions
How does the Divahna size compare to the Eikia Ballet Flat?
Both shoes share a very similar length profile. We recommend ordering your standard size in both. The Divahna has an internal fit offset of 0.12mm compared to -0.76mm for the Eikia Ballet Flat.
Do these shoes fit wide feet comfortably?
The Divahna has a snug/narrow width profile, while the Eikia Ballet Flat is snug/narrow.