True-to-Size Millimeter Sizing Comparison
Vans Classic Slip-On Checkerboard vs Vans Old Skool
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 Classic Slip-On Checkerboard to see your calculated size in the Old Skool.
Complete Size Conversion Matrix
Direct millimeter-calibrated mapping comparing all available sizes between both shoes.
| Classic Slip-On Checkerboard (US) | Internal Cavity | Old Skool Equivalent | Match Accuracy | Fit Difference |
|---|---|---|---|---|
| US 7 | 267 mm | US 7.5 | 88% | -1.0 mm |
| US 7.5 | 270 mm | US 8 | 88% | -1.0 mm |
| US 8 | 273 mm | US 8.5 | 100% | 0.0 mm |
| US 8.5 | 277 mm | US 9 | 88% | -1.0 mm |
| US 9 | 280 mm | US 9.5 | 88% | -1.0 mm |
| US 9.5 | 283 mm | US 10 | 100% | 0.0 mm |
| US 10 | 287 mm | US 10.5 | 88% | -1.0 mm |
| US 10.5 | 290 mm | US 11 | 88% | -1.0 mm |
| US 11 | 293 mm | US 11.5 | 100% | 0.0 mm |
| US 11.5 | 297 mm | US 12 | 88% | -1.0 mm |
| US 12 | 300 mm | US 12.5 | 88% | -1.0 mm |
| US 12.5 | 303 mm | US 13 | 100% | 0.0 mm |
| US 13 | 307 mm | US 14 | 76% | +2.0 mm |
| US 14 | 313 mm | US 14 | 53% | -4.0 mm |
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Frequently Asked Questions
How does the Classic Slip-On Checkerboard size compare to the Old Skool?
The Old Skool is about 4mm shorter than the Classic Slip-On Checkerboard. We suggest ordering 1/2 size up in Old Skool. The Classic Slip-On Checkerboard has an internal fit offset of 0mm compared to -4mm for the Old Skool.
Do these shoes fit wide feet comfortably?
The Classic Slip-On Checkerboard has a standard medium width profile, while the Old Skool is standard medium.