True-to-Size Millimeter Sizing Comparison
Franco Sarto Cason Loafer vs Franco Sarto Frankie Wedge Pump
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 Cason Loafer to see your calculated size in the Frankie Wedge Pump.
Complete Size Conversion Matrix
Direct millimeter-calibrated mapping comparing all available sizes between both shoes.
| Cason Loafer (US) | Internal Cavity | Frankie Wedge Pump Equivalent | Match Accuracy | Fit Difference |
|---|---|---|---|---|
| US 4.5 | 237 mm | US 5 | 100% | 0.0 mm |
| US 5 | 241 mm | US 5.5 | 88% | -1.0 mm |
| US 5.5 | 244 mm | US 6 | 88% | -1.0 mm |
| US 6 | 247 mm | US 6.5 | 100% | 0.0 mm |
| US 6.5 | 251 mm | US 7 | 88% | -1.0 mm |
| US 7 | 254 mm | US 7.5 | 88% | -1.0 mm |
| US 7.5 | 257 mm | US 8 | 100% | 0.0 mm |
| US 8 | 261 mm | US 8.5 | 88% | -1.0 mm |
| US 8.5 | 264 mm | US 9 | 65% | +3.0 mm |
| US 9 | 271 mm | US 9.5 | 88% | -1.0 mm |
| US 9.5 | 274 mm | US 10 | 88% | -1.0 mm |
| US 10 | 277 mm | US 10.5 | 100% | 0.0 mm |
| US 10.5 | 281 mm | US 11 | 88% | -1.0 mm |
| US 11 | 284 mm | US 11 | 53% | -4.0 mm |
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Frequently Asked Questions
How does the Cason Loafer size compare to the Frankie Wedge Pump?
The Frankie Wedge Pump is about 4mm shorter than the Cason Loafer. We suggest ordering 1/2 size up in Frankie Wedge Pump. The Cason Loafer has an internal fit offset of 4mm compared to 0mm for the Frankie Wedge Pump.
Do these shoes fit wide feet comfortably?
The Cason Loafer has a standard medium width profile, while the Frankie Wedge Pump is standard medium.