Shoe Width Calculator
Find your shoe width from foot and ball-of-foot measurements.
Converts between narrow (AA), medium (D/M), wide (EE), and extra-wide sizes for men and women.
Shoe width fitting is one of the most overlooked aspects of footwear. An incorrectly fitted width causes bunions, blisters, numbness, and long-term joint problems — even if the length feels right.
Width measurement method:
- Trace your foot on paper while standing (weight-bearing)
- Measure the widest part across the ball of the foot in inches
- Compare to your shoe length size using the width chart
US shoe width designations (narrowest to widest):
2A (AA) → A → B → C/D → E → 2E (EE) → 3E → 4E → 5E → 6E
For women: B = standard / medium For men: D = standard / medium
Width to measurement guide (men’s, size 10 reference):
| Width Code | Measurement | Fit Description |
|---|---|---|
| 2A (Narrow) | 3.4" | Very narrow foot |
| B | 3.6" | Narrow |
| D (Medium) | 4.0" | Standard |
| 2E (Wide) | 4.4" | Wide foot |
| 4E (X-Wide) | 4.8" | Extra wide |
Worked example: A man with a size 10 length and 4.5" ball-of-foot width:
- Standard D width = 4.0" → too narrow
- 2E width = 4.4" → still slightly snug
- 4E width = 4.8" → best fit
Signs your width is wrong:
- Shoe bulges or wrinkles on the side (too wide)
- Toes feel numb or cramped sideways (too narrow)
- Heel slips despite correct length (too wide overall)
- Laces won’t close without pulling (too narrow)
European and UK shoes typically do not use width codes — they use last shapes (slim, regular, wide). When ordering internationally, always check the brand’s specific width grading.
How we build and check this calculator
This calculator runs entirely in your browser, so the numbers you enter stay on your device. The math behind it is written by hand and tested against worked examples and standard references before the page goes live.
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