True-to-Size Millimeter Sizing Comparison
Converse Chuck Taylor All Star Low-Top vs KEEN Whisper
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 Chuck Taylor All Star Low-Top to see your calculated size in the Whisper.
Complete Size Conversion Matrix
Direct millimeter-calibrated mapping comparing all available sizes between both shoes.
| Chuck Taylor All Star Low-Top (US) | Internal Cavity | Whisper Equivalent | Match Accuracy | Fit Difference |
|---|---|---|---|---|
| US 3 | 234 mm | US 3.5 | 36% | +5.4 mm |
| US 3.5 | 241 mm | US 4 | 83% | +1.4 mm |
| US 6 | 244 mm | US 4.5 | 71% | +2.4 mm |
| US 6.5 | 248 mm | US 5 | 83% | +1.4 mm |
| US 7 | 251 mm | US 5.5 | 83% | +1.4 mm |
| US 7.5 | 254 mm | US 6 | 71% | +2.4 mm |
| US 6 | 261 mm | US 6.5 | 82% | -1.6 mm |
| US 6.5 | 265 mm | US 7 | 77% | +1.9 mm |
| US 7 | 268 mm | US 7.5 | 83% | +1.4 mm |
| US 7.5 | 271 mm | US 8 | 83% | +1.4 mm |
| US 7.5 | 274 mm | US 8.5 | 71% | +2.4 mm |
| US 8 | 278 mm | US 9 | 83% | +1.4 mm |
| US 8.5 | 281 mm | US 9.5 | 83% | +1.4 mm |
| US 9 | 284 mm | US 10 | 71% | +2.4 mm |
| US 9.5 | 288 mm | US 10.5 | 83% | +1.4 mm |
| US 10 | 294 mm | US 11.5 | 71% | +2.4 mm |
| US 10.5 | 298 mm | US 12 | 83% | +1.4 mm |
| US 11 | 301 mm | US 12.5 | 83% | +1.4 mm |
| US 11.5 | 308 mm | US 14 | 48% | +4.4 mm |
| US 12 | 311 mm | US 14 | 83% | +1.4 mm |
| US 13 | 317 mm | US 14 | 46% | -4.6 mm |
| US 13 | 320 mm | US 14 | 11% | -7.6 mm |
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Frequently Asked Questions
How does the Chuck Taylor All Star Low-Top size compare to the Whisper?
Both shoes share a very similar length profile. We recommend ordering your standard size in both. The Chuck Taylor All Star Low-Top has an internal fit offset of 1.16mm compared to -0.4mm for the Whisper.
Do these shoes fit wide feet comfortably?
The Chuck Taylor All Star Low-Top has a snug/narrow width profile, while the Whisper is snug/narrow.