NikeUnisex
Defy
Fit verdict, size conversion guide, and millimeter measurements.
Fit Analysis & Sizing Advice
Order Your Standard SizeThis 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: Standard Width (Medium). Conforms to standard medium width.
Community Fit Consensus
Aggregated feedback from verified shoe owners
4.6
(120 ratings)64% of wearers report this shoe fits True to Size.
Length Distribution
Runs Small29%
True to Size64%
Runs Large7%
Width Distribution
Runs Narrow16%
Standard Width78%
Runs Wide6%
Complete Size Chart
Showing 38 sizes| EU | US (M) | UK | Foot Length | Cavity Length |
|---|---|---|---|---|
| 35.5 | 3.5 | 3 | 21.6 cm | 231.12 mm |
| 36 | 4 | 3.5 | 22.0 cm | 235.12 mm |
| 36.5 | 4.5 | 4 | 22.4 cm | 239.12 mm |
| 37.5 | 5 | 4.5 | 22.9 cm | 244.12 mm |
| 38 | 5.5 | 5 | 23.3 cm | 248.12 mm |
| 38.5 | 6 | 5.5 | 23.7 cm | 252.12 mm |
| 39 | 6.5 | 6 | 24.1 cm | 256.12 mm |
| 40 | 7 | 6 | 24.5 cm | 260.12 mm |
| 40.5 | 7.5 | 6.5 | 25.0 cm | 265.12 mm |
| 41 | 8 | 7 | 25.4 cm | 269.12 mm |
| 42 | 8.5 | 7.5 | 25.8 cm | 273.12 mm |
| 42.5 | 9 | 8 | 26.2 cm | 277.12 mm |
| 43 | 9.5 | 8.5 | 26.7 cm | 282.12 mm |
| 44 | 10 | 9 | 27.1 cm | 286.12 mm |
| 44.5 | 10.5 | 9.5 | 27.5 cm | 290.12 mm |
| 45 | 11 | 10 | 27.9 cm | 294.12 mm |
| 45.5 | 11.5 | 10.5 | 28.3 cm | 298.12 mm |
| 46 | 12 | 11 | 28.8 cm | 303.12 mm |
| 47 | 12.5 | 11.5 | 29.2 cm | 307.12 mm |
| 47.5 | 13 | 12 | 29.6 cm | 311.12 mm |
| 48 | 13.5 | 12.5 | 30.0 cm | 315.12 mm |
| 48.5 | 14 | 13 | 30.5 cm | 320.12 mm |
| 49 | 14.5 | 13.5 | 30.9 cm | 324.12 mm |
| 49.5 | 15 | 14 | 31.3 cm | 328.12 mm |
| 50 | 15.5 | 14.5 | 31.7 cm | 332.12 mm |
| 50.5 | 16 | 15 | 32.2 cm | 337.12 mm |
| 51 | 16.5 | 15.5 | 32.6 cm | 341.12 mm |
| 51.5 | 17 | 16 | 33.0 cm | 345.12 mm |
| 52 | 17.5 | 16.5 | 33.4 cm | 349.12 mm |
| 52.5 | 18 | 17 | 33.9 cm | 354.12 mm |
| 53 | 18.5 | 17.5 | 34.3 cm | 358.12 mm |
| 53.5 | 19 | 18 | 34.7 cm | 362.12 mm |
| 54 | 19.5 | 18.5 | 35.1 cm | 366.12 mm |
| 54.5 | 20 | 19 | 35.5 cm | 370.12 mm |
| 55 | 20.5 | 19.5 | 36.0 cm | 375.12 mm |
| 55.5 | 21 | 20 | 36.4 cm | 379.12 mm |
| 56 | 21.5 | 20.5 | 36.8 cm | 383.12 mm |
| 56.5 | 22 | 21 | 37.2 cm | 387.12 mm |
Frequently Asked Questions
Does the Nike Defy 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 Defy to give you your personalized size.
Instant recommendation
Accounts for width & stretch
No sign-up required
Model Details
BrandNike
ModelDefy
Gender SpecUnisex
Sizes Offered38 sizes
Community Rating4.6 ★ (120 votes)
Fit Data SourceCommunity Validated
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