True-to-Size Millimeter Sizing Comparison

Jordan 4Rm vs Jordan AJ1 Mid

Detailed size conversion chart, cavity measurements in millimeters, and crowd-sourced fit advice for choosing your perfect size.

Shoe Amen
Jordan 4Rm
4.6(203 reviews)
Fit TendencyTrue to Size
Width ProfileStandard (Medium)
View Full 4Rm Breakdown
Shoe Bmen
Jordan AJ1 Mid
4.7(292 reviews)
Fit TendencyTrue to Size
Width ProfileStandard (Medium)
View Full AJ1 Mid Breakdown
Fit Verdict

True to Size Comparison

Both shoes share a very similar length profile. We recommend ordering your standard size in both.

Length Delta0 mm
Width Delta+0.12 mm

Interactive Size Converter

Select what size you wear in the 4Rm to see your calculated size in the AJ1 Mid.

Recommended Size in Jordan AJ1 Mid
US 9100% Match

Internal shoe cavity difference: 0.0 mm (snugger)

Complete Size Conversion Matrix

Direct millimeter-calibrated mapping comparing all available sizes between both shoes.

4Rm (US)Internal CavityAJ1 Mid EquivalentMatch AccuracyFit Difference
US 5237 mmUS 5100%0.0 mm
US 5.5240 mmUS 5.5100%0.0 mm
US 6243 mmUS 6100%0.0 mm
US 6.5250 mmUS 6.5100%0.0 mm
US 7253 mmUS 7100%0.0 mm
US 6257 mmUS 6100%0.0 mm
US 6.5260 mmUS 6.5100%0.0 mm
US 7267 mmUS 7100%0.0 mm
US 7.5270 mmUS 7.5100%0.0 mm
US 8273 mmUS 8100%0.0 mm
US 8.5280 mmUS 8.5100%0.0 mm
US 9283 mmUS 9100%0.0 mm
US 9.5287 mmUS 9.5100%0.0 mm
US 10293 mmUS 10100%0.0 mm
US 10.5297 mmUS 10.5100%0.0 mm
US 11300 mmUS 11100%0.0 mm
US 11.5303 mmUS 11.5100%0.0 mm
US 12307 mmUS 12100%0.0 mm
US 12.5313 mmUS 12.5100%0.0 mm
US 13316 mmUS 13100%0.0 mm
US 14322 mmUS 14100%0.0 mm
US 15328 mmUS 15100%0.0 mm
US 16334 mmUS 16100%0.0 mm

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Frequently Asked Questions

How does the 4Rm size compare to the AJ1 Mid?

Both shoes share a very similar length profile. We recommend ordering your standard size in both. The 4Rm has an internal fit offset of 0.08mm compared to 0.08mm for the AJ1 Mid.

Do these shoes fit wide feet comfortably?

The 4Rm has a snug/narrow width profile, while the AJ1 Mid is roomy/wide.