Shoe size converter

Convert between US, UK, EU, Japanese, Korean, and Mondopoint shoe sizes. Sizes are matched through foot length, the only measurement all systems share. Fit varies by manufacturer, so expect up to half a size of difference between brands.

Your size system

Your size

Shoe sizes vary between manufacturers and lasts — when between sizes, size up. Measured foot length is the most reliable guide.

Adult shoe size chart

Adult shoe size conversion chart across systems
Foot length	US Men	US Women	UK	EU	Japan	Korea
220 mm	4	5.5	3.5	36	22 cm	220
225 mm	4.5	6	4	37	22.5 cm	225
230 mm	5	6.5	4.5	37.5	23 cm	230
235 mm	6	7.5	5.5	38.5	23.5 cm	235
240 mm	6.5	8	6	39	24 cm	240
245 mm	7	8.5	6.5	40	24.5 cm	245
250 mm	7.5	9	7	40.5	25 cm	250
255 mm	8	9.5	7.5	41.5	25.5 cm	255
260 mm	8.5	10	8	42	26 cm	260
265 mm	9.5	11	9	43	26.5 cm	265
270 mm	10	11.5	9.5	43.5	27 cm	270
275 mm	10.5	12	10	44.5	27.5 cm	275
280 mm	11	12.5	10.5	45	28 cm	280
285 mm	11.5	13	11	46	28.5 cm	285
290 mm	12.5	14	12	46.5	29 cm	290
295 mm	13	14.5	12.5	47.5	29.5 cm	295
300 mm	13.5	15	13	48	30 cm	300
305 mm	14	15.5	13.5	49	30.5 cm	305
310 mm	14.5	16	14	49.5	31 cm	310
315 mm	15	16.5	14.5	50.5	31.5 cm	315
320 mm	16	17.5	15.5	51	32 cm	320

Kids' shoe size chart

US children's sizes run from small "C" sizes to 13.5C, then start over at youth 1Y. Kids' feet grow fast — remeasure every few months.

Kids shoe size conversion chart across systems
Foot length	US Kids	UK	EU	Japan	Korea
100 mm	2C	1.5	17.5	10 cm	100
105 mm	2.5C	2	18	10.5 cm	105
110 mm	3.5C	3	19	11 cm	110
115 mm	4C	3.5	19.5	11.5 cm	115
120 mm	4.5C	4	20.5	12 cm	120
125 mm	5C	4.5	21	12.5 cm	125
130 mm	5.5C	5	22	13 cm	130
135 mm	6.5C	6	22.5	13.5 cm	135
140 mm	7C	6.5	23.5	14 cm	140
145 mm	7.5C	7	24	14.5 cm	145
150 mm	8C	7.5	25	15 cm	150
155 mm	8.5C	8	25.5	15.5 cm	155
160 mm	9C	8.5	26.5	16 cm	160
165 mm	10C	9.5	27	16.5 cm	165
170 mm	10.5C	10	28	17 cm	170
175 mm	11C	10.5	28.5	17.5 cm	175
180 mm	11.5C	11	29.5	18 cm	180
185 mm	12C	11.5	30	18.5 cm	185
190 mm	13C	12.5	31	19 cm	190
195 mm	13.5C	13	31.5	19.5 cm	195
200 mm	1Y	13.5	32.5	20 cm	200
205 mm	1.5Y	14	33	20.5 cm	205
210 mm	2Y	14.5	34	21 cm	210
215 mm	2.5Y	15	34.5	21.5 cm	215

How the systems relate

Mondopoint / Korea — the foot length itself, in millimeters.
Japan — the same measurement in centimeters.
US men's — 3 × foot length in inches − 22 (Brannock device scale).
US women's — about 1.5 above the men's size for the same foot.
UK — about half a size below US men's.
EU — Paris points: 1 point = 2/3 cm, measured on the last with about 2 cm of toe allowance.

Frequently asked questions

How do I measure my foot for shoe sizing?

Stand on a sheet of paper in the socks you plan to wear, mark the tip of your longest toe and the back of your heel, and measure the distance in millimeters. Measure both feet in the evening (feet swell during the day) and use the longer one.

Why does the same foot get different sizes in different brands?

Size systems describe the last (the form the shoe is built around), not your foot, and each manufacturer adds its own allowance for toe room. Two brands can label the same last a half size apart, so treat any converted size as a starting point, not a guarantee.

What is Mondopoint?

Mondopoint (ISO 9407) labels shoes by the foot length they fit, in millimeters — a 270 shoe fits a 270 mm foot. Korea uses the same millimeter convention, and Japan uses the identical value in centimeters. It is the only system that states the measurement directly.

What is the difference between US men's and women's sizes?

They use the same length scale shifted apart: a US women's size is commonly about 1.5 larger than the men's size for the same foot length, so a men's 8 corresponds to roughly a women's 9.5. Width standards also differ between the two scales.