True-to-Size Millimeter Sizing Comparison
Avenger Work Boots Foundation CT vs Avenger Work Boots Framer CT
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 Foundation CT to see your calculated size in the Framer CT.
Complete Size Conversion Matrix
Direct millimeter-calibrated mapping comparing all available sizes between both shoes.
| Foundation CT (US) | Internal Cavity | Framer CT Equivalent | Match Accuracy | Fit Difference |
|---|---|---|---|---|
| US 4.5 | 234 mm | US 4.5 | 96% | +0.3 mm |
| US 5 | 238 mm | US 5 | 96% | +0.3 mm |
| US 5.5 | 241 mm | US 5.5 | 96% | +0.3 mm |
| US 6 | 244 mm | US 6 | 96% | +0.3 mm |
| US 6.5 | 248 mm | US 6.5 | 96% | +0.3 mm |
| US 7 | 251 mm | US 7 | 96% | +0.3 mm |
| US 7.5 | 254 mm | US 7.5 | 96% | +0.3 mm |
| US 8 | 258 mm | US 8 | 96% | +0.3 mm |
| US 8.5 | 261 mm | US 8.5 | 96% | +0.3 mm |
| US 9 | 268 mm | US 9 | 96% | +0.3 mm |
| US 9.5 | 271 mm | US 9.5 | 96% | +0.3 mm |
| US 10 | 274 mm | US 10 | 96% | +0.3 mm |
| US 10.5 | 278 mm | US 10.5 | 96% | +0.3 mm |
| US 11 | 281 mm | US 11 | 96% | +0.3 mm |
Related Comparisons
Frequently Asked Questions
How does the Foundation CT size compare to the Framer CT?
Both shoes share a very similar length profile. We recommend ordering your standard size in both. The Foundation CT has an internal fit offset of 0.68mm compared to 1mm for the Framer CT.
Do these shoes fit wide feet comfortably?
The Foundation CT has a roomy/wide width profile, while the Framer CT is roomy/wide.