True-to-Size Millimeter Sizing Comparison
Ariat Ariat Rambler vs Merrell Moab 3
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 Ariat Rambler to see your calculated size in the Moab 3.
Complete Size Conversion Matrix
Direct millimeter-calibrated mapping comparing all available sizes between both shoes.
| Ariat Rambler (US) | Internal Cavity | Moab 3 Equivalent | Match Accuracy | Fit Difference |
|---|---|---|---|---|
| US 7 | 271 mm | US 7.5 | 88% | -1.0 mm |
| US 7.5 | 274 mm | US 8 | 88% | -1.0 mm |
| US 8 | 277 mm | US 8.5 | 100% | 0.0 mm |
| US 8.5 | 281 mm | US 9 | 88% | -1.0 mm |
| US 9 | 284 mm | US 9.5 | 88% | -1.0 mm |
| US 9.5 | 287 mm | US 10 | 100% | 0.0 mm |
| US 10 | 291 mm | US 10.5 | 88% | -1.0 mm |
| US 10.5 | 294 mm | US 11 | 88% | -1.0 mm |
| US 11 | 297 mm | US 11.5 | 100% | 0.0 mm |
| US 11.5 | 301 mm | US 12 | 88% | -1.0 mm |
| US 12 | 304 mm | US 12.5 | 88% | -1.0 mm |
| US 12.5 | 307 mm | US 13 | 100% | 0.0 mm |
| US 13 | 311 mm | US 14 | 76% | +2.0 mm |
| US 14 | 317 mm | US 14 | 53% | -4.0 mm |
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Frequently Asked Questions
How does the Ariat Rambler size compare to the Moab 3?
The Moab 3 is about 4mm shorter than the Ariat Rambler. We suggest ordering 1/2 size up in Moab 3. The Ariat Rambler has an internal fit offset of 4mm compared to 0mm for the Moab 3.
Do these shoes fit wide feet comfortably?
The Ariat Rambler has a standard medium width profile, while the Moab 3 is standard medium.