True-to-Size Millimeter Sizing Comparison
Columbia Fairbanks Omni-Heat vs Columbia Newton Ridge Plus II Waterproof
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 Fairbanks Omni-Heat to see your calculated size in the Newton Ridge Plus II Waterproof.
Complete Size Conversion Matrix
Direct millimeter-calibrated mapping comparing all available sizes between both shoes.
| Fairbanks Omni-Heat (US) | Internal Cavity | Newton Ridge Plus II Waterproof Equivalent | Match Accuracy | Fit Difference |
|---|---|---|---|---|
| US 3.5 | 236 mm | US 3.5 | 53% | +4.0 mm |
| US 4 | 239 mm | US 3.5 | 88% | +1.0 mm |
| US 4.5 | 243 mm | US 4 | 100% | 0.0 mm |
| US 5 | 246 mm | US 4.5 | 88% | +1.0 mm |
| US 5.5 | 249 mm | US 5 | 88% | +1.0 mm |
| US 6 | 253 mm | US 5.5 | 100% | 0.0 mm |
| US 6.5 | 256 mm | US 6 | 88% | +1.0 mm |
| US 7 | 263 mm | US 6.5 | 65% | -3.0 mm |
| US 7.5 | 266 mm | US 7 | 88% | +1.0 mm |
| US 8 | 269 mm | US 7.5 | 88% | +1.0 mm |
| US 8.5 | 273 mm | US 8 | 100% | 0.0 mm |
| US 9 | 276 mm | US 8.5 | 88% | +1.0 mm |
| US 9.5 | 279 mm | US 9 | 88% | +1.0 mm |
| US 10 | 283 mm | US 9.5 | 100% | 0.0 mm |
| US 10.5 | 286 mm | US 10 | 88% | +1.0 mm |
| US 11 | 289 mm | US 10.5 | 88% | +1.0 mm |
| US 11.5 | 293 mm | US 11 | 100% | 0.0 mm |
| US 12 | 296 mm | US 11.5 | 88% | +1.0 mm |
| US 12.5 | 299 mm | US 12 | 88% | +1.0 mm |
| US 13 | 303 mm | US 12.5 | 100% | 0.0 mm |
| US 14 | 309 mm | US 13 | 76% | -2.0 mm |
Related Comparisons
columbia ComparisonFairbanks Omni-Heat vs Newton Ridge Plus Waterproof AmpedView Sizing Comparisoncolumbia ComparisonFairbanks Omni-Heat vs Newton Ridge PlusView Sizing Comparisoncolumbia ComparisonNewton Ridge Plus II Waterproof vs Newton Ridge Plus Waterproof AmpedView Sizing Comparisoncolumbia ComparisonNewton Ridge Plus vs Newton Ridge Plus II WaterproofView Sizing Comparison
Frequently Asked Questions
How does the Fairbanks Omni-Heat size compare to the Newton Ridge Plus II Waterproof?
The Newton Ridge Plus II Waterproof provides about 4mm more internal length than the Fairbanks Omni-Heat. We suggest ordering 1/2 size down in Newton Ridge Plus II Waterproof. The Fairbanks Omni-Heat has an internal fit offset of -4mm compared to 0mm for the Newton Ridge Plus II Waterproof.
Do these shoes fit wide feet comfortably?
The Fairbanks Omni-Heat has a standard medium width profile, while the Newton Ridge Plus II Waterproof is standard medium.