True-to-Size Millimeter Sizing Comparison
New Balance 608v5 vs Nike Air Max Plus
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 608v5 to see your calculated size in the Air Max Plus.
Complete Size Conversion Matrix
Direct millimeter-calibrated mapping comparing all available sizes between both shoes.
| 608v5 (US) | Internal Cavity | Air Max Plus Equivalent | Match Accuracy | Fit Difference |
|---|---|---|---|---|
| US 2.5 | 221 mm | US 3.5 | 0% | +11.2 mm |
| US 3 | 226 mm | US 3.5 | 26% | +6.2 mm |
| US 3.5 | 231 mm | US 3.5 | 85% | +1.2 mm |
| US 4 | 236 mm | US 4 | 97% | +0.2 mm |
| US 4.5 | 241 mm | US 4.5 | 91% | -0.8 mm |
| US 5 | 246 mm | US 5 | 91% | -0.8 mm |
| US 5.5 | 251 mm | US 5.5 | 79% | -1.8 mm |
| US 6 | 256 mm | US 6.5 | 85% | +1.2 mm |
| US 6.5 | 261 mm | US 7 | 97% | +0.2 mm |
| US 7 | 266 mm | US 7.5 | 97% | +0.2 mm |
| US 7.5 | 271 mm | US 8 | 91% | -0.8 mm |
| US 8 | 276 mm | US 8.5 | 79% | -1.8 mm |
| US 8.5 | 281 mm | US 9.5 | 74% | +2.2 mm |
| US 9 | 286 mm | US 10 | 85% | +1.2 mm |
| US 9.5 | 291 mm | US 10.5 | 97% | +0.2 mm |
| US 10 | 296 mm | US 11 | 91% | -0.8 mm |
| US 10.5 | 301 mm | US 11.5 | 79% | -1.8 mm |
| US 11 | 306 mm | US 12 | 79% | -1.8 mm |
| US 11.5 | 311 mm | US 13 | 85% | +1.2 mm |
| US 12 | 316 mm | US 13.5 | 97% | +0.2 mm |
| US 12.5 | 321 mm | US 14 | 97% | +0.2 mm |
| US 13 | 326 mm | US 14.5 | 91% | -0.8 mm |
| US 13.5 | 331 mm | US 15 | 79% | -1.8 mm |
| US 14 | 336 mm | US 16 | 74% | +2.2 mm |
| US 15 | 346 mm | US 17 | 97% | +0.2 mm |
| US 16 | 356 mm | US 18 | 91% | -0.8 mm |
| US 17 | 366 mm | US 19.5 | 85% | +1.2 mm |
| US 18 | 376 mm | US 20.5 | 97% | +0.2 mm |
| US 19 | 386 mm | US 21.5 | 79% | -1.8 mm |
| US 20 | 396 mm | US 22 | 8% | -7.8 mm |
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Frequently Asked Questions
How does the 608v5 size compare to the Air Max Plus?
Both shoes share a very similar length profile. We recommend ordering your standard size in both. The 608v5 has an internal fit offset of -0.12mm compared to 0.12mm for the Air Max Plus.
Do these shoes fit wide feet comfortably?
The 608v5 has a snug/narrow width profile, while the Air Max Plus is roomy/wide.