US Men → US Women

US Men 9 ≈ US Women 10. Technical reference; manufacturer labels may differ. Size labels and measured foot length are different quantities. A chart does not establish the fit of every model.

The adult technical reference uses ISO 19407:2023 §4.2, rounded to the nearest half size. Its US women’s convention is one size above US men’s; manufacturer tables use different offsets. A label-derived foot length is an estimate, not a measurement.

US Men → US Women — ISO 19407:2023
US MenUS Women≈ mm
67237.16
78245.63
89254.1
910262.57
1011271.04
1112279.51
1213287.98
1314296.45

ISO 19407:2023 §4.2 · Technical reference; manufacturer labels may differ.

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Most reliable input: foot length in millimetres. How to measure

Technical reference; manufacturer labels may differ. ISO 19407:2023 §4.2 · Source checked: 2026-09-05. Published size chart

Shoe size conversion by foot length — Technical reference; manufacturer labels may differ.
Foot length (mm) UKUS MenUS WomenEUCM
240 5.56.57.53824
250 6.57.58.539.525
260 7.58.59.54126
270 9101142.527
280 1011124428
290 11121345.529

Published size chart

Adidas: Published size chart

Applies to: Men and women footwear chart. Source market: US.

Size labels and measured foot length are different quantities. A chart does not establish the fit of every model.

Applies to
  • JP is a label; heel-to-toe is the measured foot length.
  • Only the transcribed US men 4–15 range is covered; no extrapolation.
Adidas — Published size chart
UKFoot length (mm)US menUS womenEUJP (source millimetres divided by 10)
3.5221453622
42254.55.536 2/322.5
4.52295637 1/323
52335.56.53823.5
5.52386738 2/324
62426.57.539 1/324.5
6.5246784025
72507.58.540 2/325.5
7.52558941 1/326
82598.59.54226.5
8.526391042 2/327
92679.510.543 1/327.5
9.527110114428
1027610.511.544 2/328.5
10.5280111245 1/329
1128411.512.54629.5
11.5288121346 2/330
1229312.513.547 1/330.5
12.529713144831
1330113.514.548 2/331.5
13.5305141549 1/332
1431014.515.55032.5
14.531415—50 2/3—

Official source · Shoe size chart → cm → Heel-toe / US - Men / US - Women / EU / UK / JP · Source checked: .

Converse: Published size chart

Applies to: Chuck Taylor All Star and Chuck 70 only. Source market: US.

Size labels and measured foot length are different quantities. A chart does not establish the fit of every model.

Applies to
  • The source says these two silhouettes run large; this is not a statement about all Converse shoes.
  • The source assigns 24.5 cm to both US men 5.5 and 6; the duplicate is preserved, not repaired by guesswork.
Converse — Published size chart
UKFoot length (mm)US menUS womenEU
32203535
3.52253.55.536
42304636.5
4.52354.56.537
52405737.5
5.52455.57.538
62456839
6.52506.58.539.5
72557940
7.52607.59.541
826581041.5
8.52708.510.542
927591142.5
9.52809.511.543
10285101244
10.529010.512.544.5
11295111345
11.530011.513.546
12305121446.5
13315131548
14320141649
15330151750

Official source · Chuck Taylor All Star Size Chart → cm; Includes Chuck Taylor All Star & Chuck 70 · Source checked: .

Nike: Published size chart

Applies to: Men's footwear; women's labels refer to the same men's/unisex chart. Source market: US.

Size labels and measured foot length are different quantities. A chart does not establish the fit of every model.

Applies to
  • CM/JP on the shoe box is a size label; it differs from measured foot length.
  • Women-specific models require the separate women’s chart.
Nike — Published size chart
UKFoot length (mm)US menUS womenEUCM / JP
32163.5535.522.5
3.522045.53623
42244.5636.523.5
4.522956.537.523.5
52335.573824
5.523767.538.524
62416.583924.5
624578.54025
6.52507.5940.525.5
725489.54126
7.52588.5104226.5
8262910.542.527
8.52679.5114327.5
92711011.54428
9.527510.51244.528.5
102791112.54529
10.528311.51345.529.5
112881213.54630
11.529212.5144730.5
122961314.547.531
12.530013.5154831.5
133051415.548.532
13.530914.5164932.5
143131516.549.533
14.531715.5175033.5
153221617.550.534
15.532616.5185134.5
163301718.551.535
16.533417.5195235.5
173391819.552.536
17.534318.5205336.5
183471920.553.537
18.535119.5215437.5
193552021.554.538
19.536020.5225538.5
203642122.555.539
20.536821.5235639.5
213722223.556.540

Official source · Size Chart → cm; US - Men, US - Women, UK, CM / JP, EU, Foot Length (cm) · Source checked: .

Nike: Published size chart

Applies to: Women's footwear; cross-labels in Nike's women's chart. Source market: US.

Size labels and measured foot length are different quantities. A chart does not establish the fit of every model.

Applies to
  • CM / JP is a box label, not measured foot length.
  • US kids cross-labels apply only to the published 2Y–7Y rows; they do not establish equivalent shoe construction or fit.
  • Foot length is absent in the source for US women 17.5–22.5 and stays unknown.
  • Nike recommends the larger listed size between foot measurements; measure both feet and use the longer measurement.
Nike — Published size chart
UKFoot length (mm)US menUS womenEUCM / JP
1.520823.533.521
1.52122.5434.521
221634.53521.5
2.52203.5535.522
322445.53622.5
3.52294.5636.523
423356.537.523.5
4.52375.573824
524167.538.524.5
5.52456.583925
625078.54025.5
6.52547.5940.526
725889.54126.5
7.52628.5104227
8267910.542.527.5
8.52719.5114328
92751011.54428.5
9.527910.51244.529
102831112.54529.5
10.528811.51345.530
112921213.54630.5
11.529612.5144731
123001314.547.531.5
12.530513.5154832
133091415.548.532.5
13.531314.5164933
143171516.55033.5
14.532215.51750.534
15—1617.55134.5
15.5—16.51851.535
16—1718.55235.5
16.5—17.51952.536
17—1819.55336.5
17.5—18.52053.537
18—1920.55437.5
18.5—19.52154.538
19—2021.55538.5
19.5—20.52255.539
20—2122.55639.5

Official source · Size Chart → US - Women, US - Men, US - Kids, UK, CM / JP, EU; Metric → Foot Length (cm). Public chart payload foot_length_cm in sizeCharts.data. · Source checked: .

US men 9 · Nike → Adidas