NikeUnisex

Initiator

Fit verdict, size conversion guide, and millimeter measurements.

Find Your Size
Fit Analysis & Sizing Advice
Order Your Standard Size

This shoe fits consistent with standard sizing charts. You can comfortably order your usual sneaker size.

Runs Small (–8mm)True to SizeRuns Large (+8mm)
Snug / 1 Size UpStandard fitRoomy / 1 Size Down
Width: Narrow Fit. Tends to feel snug across the midfoot and forefoot. Wide-foot wearers should consider sizing up or looking for wide widths.
Community Fit Consensus

Aggregated feedback from verified shoe owners

4.9
(243 ratings)
79% of wearers report this shoe fits True to Size.
Length Distribution
Runs Small19%
True to Size79%
Runs Large2%
Width Distribution
Runs Narrow30%
Standard Width65%
Runs Wide5%
Complete Size Chart
Showing 38 sizes
EUUS (M)UKFoot LengthCavity Length
35.53.5321.6 cm231.32 mm
3643.522.0 cm235.32 mm
36.54.5422.4 cm239.32 mm
37.554.522.9 cm244.32 mm
385.5523.3 cm248.32 mm
38.565.523.7 cm252.32 mm
396.5624.1 cm256.32 mm
407624.5 cm260.32 mm
40.57.56.525.0 cm265.32 mm
418725.4 cm269.32 mm
428.57.525.8 cm273.32 mm
42.59826.2 cm277.32 mm
439.58.526.7 cm282.32 mm
4410927.1 cm286.32 mm
44.510.59.527.5 cm290.32 mm
45111027.9 cm294.32 mm
45.511.510.528.3 cm298.32 mm
46121128.8 cm303.32 mm
4712.511.529.2 cm307.32 mm
47.5131229.6 cm311.32 mm
4813.512.530.0 cm315.32 mm
48.5141330.5 cm320.32 mm
4914.513.530.9 cm324.32 mm
49.5151431.3 cm328.32 mm
5015.514.531.7 cm332.32 mm
50.5161532.2 cm337.32 mm
5116.515.532.6 cm341.32 mm
51.5171633.0 cm345.32 mm
5217.516.533.4 cm349.32 mm
52.5181733.9 cm354.32 mm
5318.517.534.3 cm358.32 mm
53.5191834.7 cm362.32 mm
5419.518.535.1 cm366.32 mm
54.5201935.5 cm370.32 mm
5520.519.536.0 cm375.32 mm
55.5212036.4 cm379.32 mm
5621.520.536.8 cm383.32 mm
56.5222137.2 cm387.32 mm
Frequently Asked Questions

Does the Nike Initiator run big or small?

Yes, this shoe runs true to size. You should order your typical shoe size. This shoe fits consistent with standard sizing charts. You can comfortably order your usual sneaker size.

How does Shoe Fit determine shoe sizing?

Shoe Fit calculates the real-world interior shoe cavity in millimeters combined with real owner feedback, rather than relying on arbitrary brand charts.

Find Your Exact Size

Already own a shoe that fits well? Shoe Fit cross-references its internal cavity against the Nike Initiator to give you your personalized size.

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Model Details
BrandNike
ModelInitiator
Gender SpecUnisex
Sizes Offered38 sizes
Community Rating4.9 ★ (243 votes)
Fit Data SourceCommunity Validated
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