Shoe Size Converter

Convert US, UK, European, Japan, Mondopoint, China, and Korea shoe sizes — instantly.

Free shoe size converter. Convert US men's, US women's, UK, European, Japan, Mondopoint (mm), China, and South Korea sizes using ISO/TS 19407 lookup tables. Approximate guidance — measure your foot length for best fit. Use the converter above for any system pair — full charts are below.

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10 US Men's = 42.5 European (EU)

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Complete adult shoe size conversion chart

Full ISO/TS 19407:2015 Table 1 — every adult row with US men's, US women's, UK, European (EU), Mondopoint (mm), Japan (cm), China, and South Korea markings on the same foot-length basis. Source: ISO/TS 19407:2015 Table 1 (Adults' technical shoe size conversion); Japan cm, China, and Korea markings per ISO 19407:2023 on the same foot-length rows.

Foot length (mm)	US Men's	US Women's	UK	EU	Mondopoint (mm)	Japan (cm)	China	Korea (mm)
215	3.5	4.5	2.5	34	215	21.5	34	215
220	4	5	3	35	220	22.0	35	220
225	4.5	5.5	3.5	35.5	225	22.5	35.5	225
230	5	6	4	36.5	230	23.0	36	230
235	5.5	6.5	4.5	37	235	23.5	37	235
240	6.5	7.5	5.5	38	240	24.0	38	240
245	7	8	6	38.5	245	24.5	39	245
250	7.5	8.5	6.5	39.5	250	25.0	40	250
255	8	9	7	40	255	25.5	41	255
260	8.5	9.5	7.5	41	260	26.0	42	260
265	9.5	10.5	8.5	41.5	265	26.5	43	265
270	10	11	9	42.5	270	27.0	44	270
275	10.5	11.5	9.5	43	275	27.5	45	275
280	11	12	10	44	280	28.0	46	280
285	11.5	12.5	10.5	44.5	285	28.5	47	285
290	12	13	11	45.5	290	29.0	48	290
295	13	14	12	46	295	29.5	49	295
300	13.5	14.5	12.5	47	300	30.0	50	300
305	14	15	13	47.5	305	30.5	51	305
310	14.5	15.5	13.5	48.5	310	31.0	52	310
315	15	16	14	49	315	31.5	53	315
320	16	17	15	50	320	32.0	54	320

Complete children's shoe size conversion chart

ISO/TS 19407:2015 Table 3 — children's sizes are separate from adult sizing. Source: ISO/TS 19407:2015 Table 3 (Children's size conversion); Japan cm, China, and Korea per ISO 19407:2023 on the same foot-length rows.

Foot length (mm)	US Children's	UK Children's	EU	Mondopoint (mm)	Japan (cm)	China	Korea (mm)
120	5.5	4.5	19.5	120	12.0	19	120
125	6	5	20	125	12.5	20	125
130	6.5	5.5	21	130	13.0	21	130
135	7	6	22	135	13.5	22	135
140	7.5	6.5	22.5	140	14.0	23	140
145	8	7	23.5	145	14.5	24	145
150	8.5	7.5	24.5	150	15.0	25	150
155	9	8	25	155	15.5	26	155
160	9.5	8.5	26	160	16.0	27	160
165	10	9	27	165	16.5	28	165
170	10.5	9.5	27.5	170	17.0	29	170
175	11	10	28.5	175	17.5	30	175
180	11.5	10.5	29	180	18.0	31	180
185	12	11	30	185	18.5	32	185
190	12.5	11.5	31	190	19.0	33	190
195	13	12	31.5	195	19.5	34	195
200	13.5	12.5	32.5	200	20.0	34	200
205	1	13	33	205	20.5	35	205
210	1.5	13.5	34	210	21.0	35	210
215	2	1	35	215	21.5	36	215

How to convert shoe sizes

Pick your current sizing system and size in the converter above. We look up the matching foot-length row in the ISO chart, then read the equivalent size in your target system. Mondopoint (millimeters) is the canonical foot length — every other column on the same row is the published equivalent for that length. When no exact target size exists, the nearest chart size is shown and labeled (nearest).

For the most reliable fit, measure foot length in millimeters (heel to longest toe, standing) and compare to the Mondopoint column. Brand lasts and widths vary — use this chart as guidance, not a guarantee.

Shoe size systems explained

US Men's / US Women's: United States numbered scales; women's sizes run roughly 1.5–2 sizes larger than men's for the same foot length.
UK: British adult scale; typically about one size smaller than US men's for the same foot.
European (EU): Continental European sizing (Paris point / EUR marking on ISO rows).
Mondopoint (mm): Direct foot length in millimeters — the ISO canonical basis for the chart above.
Japan (cm): Japanese cm marking on the same ISO foot-length rows.
China / South Korea (mm): CN and KR markings from ISO 19407:2023 on the same foot-length rows.

Frequently asked questions

How do I convert shoe sizes between US, UK, and EU?

Use the converter above: pick your current system and size, then choose the target system. We look up the matching ISO/TS 19407 foot-length row and read the equivalent size. Example: US men's 10 = EU 42.5 on the published adult chart. Mondopoint (mm) is the canonical foot length — measure your foot in millimeters for the most reliable match.

Are shoe size conversions exact?

Conversions follow published ISO chart rows — not a formula. When no exact target size exists on the row, the nearest chart size is shown and labeled "(nearest)". This is conversion guidance based on published size charts — not a guarantee of fit. Brands and lasts vary; measure your foot length in millimeters when possible.

Is this shoe size converter private?

Yes. All lookups run locally in your browser. Nothing you select is sent to a server.