Converse Chuck 70 vs Nike React Infinity Run 4 Sizing
Converse Chuck 70 vs Nike React Infinity Run 4: side-by-side fit, toe-box width and the exact size to order in each — Converse Chuck 70 runs bigger. Free interactive sizing comparison.
Should you size up from the Converse Chuck 70 to the Nike React Infinity Run 4?
Yes — size up a half size. If you wear a US 10 in the Chuck 70, order about a US 10.5 in the React Infinity Run 4.
How they compare
Converse Chuck 70 → Nike React Infinity Run 4: The Converse Chuck 70 runs about a half-size large and has a slightly narrower toe box compared to the Nike React Infinity Run 4. If you wear a US 10 in the Chuck 70, your target size for the React Infinity Run 4 is US 10.5.
Nike React Infinity Run 4 → Converse Chuck 70: The Nike React Infinity Run 4 runs true to size and has a slightly wider toe box compared to the Converse Chuck 70. If you wear a US 10 in the React Infinity Run 4, your target size for the Chuck 70 is US 9.5.
Spec comparison
| Spec | Converse Chuck 70 | Nike React Infinity Run 4 |
|---|---|---|
| Length Fit | Runs Large (~½ size) | True to Size |
| Toe Box Profile | Standard | Wide |
| Arch Support | None | High |
| Upper Material | Canvas | Flyknit |
Size conversion: Converse Chuck 70 → Nike React Infinity Run 4
If you wear these US sizes in the Chuck 70, here is the size to order in the React Infinity Run 4.
| Your US size in Chuck 70 | Recommended React Infinity Run 4 size |
|---|---|
| US 8 | US 8.5 |
| US 9 | US 9.5 |
| US 10 | US 10.5 |
| US 11 | US 11.5 |
| US 12 | US 12.5 |
Frequently asked questions
Which runs bigger, the Converse Chuck 70 or the Nike React Infinity Run 4?
The Converse Chuck 70 runs longer than the Nike React Infinity Run 4 — it is large, so size accordingly when moving between them.
If I wear a US 10 in the Chuck 70, what size is the React Infinity Run 4?
Target a US 10.5 in the React Infinity Run 4. A US 9 in the Chuck 70 maps to about US 9.5, and a US 11 to about US 11.5.
Is the Chuck 70 wider than the React Infinity Run 4?
The Converse Chuck 70 has a slightly narrower toe box versus the Nike React Infinity Run 4 (standard vs wide). Forefoot room is one of the biggest reasons two shoes at the same length still feel different.
How do the Chuck 70 and React Infinity Run 4 compare on support and material?
The Chuck 70 pairs none arch support with a canvas upper; the React Infinity Run 4 has high support and a flyknit upper.
Try it: adjust the size and compare live
Verdict
The Converse Chuck 70 runs about a half-size large and has a slightly narrower toe box compared to the Nike React Infinity Run 4. If you wear a US 10 in the Chuck 70, your target size for the React Infinity Run 4 is US 10.5.
| Spec | Converse Chuck 70 | Nike React Infinity Run 4 |
|---|---|---|
| Length Fit | Runs Large (~½ size) | True to Size |
| Toe Box Profile | Standard | Wide |
| Arch Support | None | High |
| Upper Material | Canvas | Flyknit |