True-to-Size Millimeter Sizing Comparison
Johnston & Murphy Aragon Kiltie Tassel Loafer vs Johnston & Murphy McGuffey Casual
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 Aragon Kiltie Tassel Loafer to see your calculated size in the McGuffey Casual.
Complete Size Conversion Matrix
Direct millimeter-calibrated mapping comparing all available sizes between both shoes.
| Aragon Kiltie Tassel Loafer (US) | Internal Cavity | McGuffey Casual Equivalent | Match Accuracy | Fit Difference |
|---|---|---|---|---|
| US 3.5 | 240 mm | US 7 | 0% | +26.6 mm |
| US 4 | 243 mm | US 7 | 0% | +23.6 mm |
| US 4.5 | 247 mm | US 7 | 0% | +19.6 mm |
| US 5 | 250 mm | US 7 | 0% | +16.6 mm |
| US 5.5 | 253 mm | US 7 | 0% | +13.6 mm |
| US 6 | 257 mm | US 7 | 0% | +9.6 mm |
| US 6.5 | 260 mm | US 7 | 22% | +6.6 mm |
| US 7 | 267 mm | US 7.5 | 70% | +2.6 mm |
| US 7.5 | 270 mm | US 8 | 70% | +2.6 mm |
| US 8 | 273 mm | US 8 | 95% | -0.4 mm |
| US 8.5 | 277 mm | US 9 | 70% | +2.6 mm |
| US 9 | 280 mm | US 9.5 | 70% | +2.6 mm |
| US 9.5 | 283 mm | US 9.5 | 95% | -0.4 mm |
| US 10 | 287 mm | US 10.5 | 70% | +2.6 mm |
| US 10.5 | 290 mm | US 11 | 70% | +2.6 mm |
| US 11 | 293 mm | US 11 | 95% | -0.4 mm |
| US 11.5 | 297 mm | US 12 | 70% | +2.6 mm |
| US 12 | 300 mm | US 12.5 | 70% | +2.6 mm |
| US 12.5 | 303 mm | US 12.5 | 95% | -0.4 mm |
| US 13 | 307 mm | US 13 | 95% | -0.4 mm |
| US 14 | 313 mm | US 14 | 95% | -0.4 mm |
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Frequently Asked Questions
How does the Aragon Kiltie Tassel Loafer size compare to the McGuffey Casual?
Both shoes share a very similar length profile. We recommend ordering your standard size in both. The Aragon Kiltie Tassel Loafer has an internal fit offset of 0.08mm compared to -0.36mm for the McGuffey Casual.
Do these shoes fit wide feet comfortably?
The Aragon Kiltie Tassel Loafer has a snug/narrow width profile, while the McGuffey Casual is snug/narrow.