True-to-Size Millimeter Sizing Comparison

Under Armour Charged Surge vs Under Armour Charged Surge 4

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

Shoe Aunisex
Under Armour Charged Surge
4.7(582 reviews)
Fit TendencyRuns Small (-8mm)
Width ProfileStandard (Medium)
View Full Charged Surge Breakdown
Shoe Bunisex
Under Armour Charged Surge 4
4.6(372 reviews)
Fit TendencyRuns Small (-4mm)
Width ProfileStandard (Medium)
View Full Charged Surge 4 Breakdown
Fit Verdict

Charged Surge 4 Runs Slightly Larger

The Charged Surge 4 provides about 4mm more internal length than the Charged Surge. We suggest ordering 1/2 size down in Charged Surge 4.

Length Delta+4 mm
Width DeltaIdentical

Interactive Size Converter

Select what size you wear in the Charged Surge to see your calculated size in the Charged Surge 4.

Recommended Size in Under Armour Charged Surge 4
US 8100% Match

Internal shoe cavity difference: 0.0 mm (snugger)

Complete Size Conversion Matrix

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

Charged Surge (US)Internal CavityCharged Surge 4 EquivalentMatch AccuracyFit Difference
US 3.5232 mmUS 3.553%+4.0 mm
US 4235 mmUS 3.588%+1.0 mm
US 4.5239 mmUS 4100%0.0 mm
US 5242 mmUS 4.588%+1.0 mm
US 5.5245 mmUS 588%+1.0 mm
US 6249 mmUS 5.5100%0.0 mm
US 6.5252 mmUS 688%+1.0 mm
US 7259 mmUS 6.565%-3.0 mm
US 7.5262 mmUS 788%+1.0 mm
US 8265 mmUS 7.588%+1.0 mm
US 8.5269 mmUS 8100%0.0 mm
US 9272 mmUS 8.588%+1.0 mm
US 9.5275 mmUS 988%+1.0 mm
US 10279 mmUS 9.5100%0.0 mm
US 10.5282 mmUS 1088%+1.0 mm
US 11285 mmUS 10.588%+1.0 mm
US 11.5289 mmUS 11100%0.0 mm
US 12292 mmUS 11.588%+1.0 mm
US 12.5295 mmUS 1288%+1.0 mm
US 13299 mmUS 12.5100%0.0 mm
US 14305 mmUS 1376%-2.0 mm

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Frequently Asked Questions

How does the Charged Surge size compare to the Charged Surge 4?

The Charged Surge 4 provides about 4mm more internal length than the Charged Surge. We suggest ordering 1/2 size down in Charged Surge 4. The Charged Surge has an internal fit offset of -8mm compared to -4mm for the Charged Surge 4.

Do these shoes fit wide feet comfortably?

The Charged Surge has a standard medium width profile, while the Charged Surge 4 is standard medium.