International Footwear & Ring Size Studio

US / CA	UK	EU	Japan (CM)	Korea (MM)	Inches
6	5.5	38.5	24 cm	240 mm	9.45"
6.5	6	39	24.5 cm	245 mm	9.65"
7	6.5	40	25 cm	250 mm	9.84"
7.5	7	40.5	25.5 cm	255 mm	10.04"
8	7.5	41	26 cm	260 mm	10.24"
8.5	8	42	26.5 cm	265 mm	10.43"
9	8.5	42.5	27 cm	270 mm	10.63"
9.5	9	43	27.5 cm	275 mm	10.83"
10	9.5	44	28 cm	280 mm	11.02"
10.5	10	44.5	28.5 cm	285 mm	11.22"
11	10.5	45	29 cm	290 mm	11.42"
11.5	11	45.5	29.5 cm	295 mm	11.61"
12	11.5	46	30 cm	300 mm	11.81"
13	12.5	47.5	31 cm	310 mm	12.2"
14	13.5	48.5	32 cm	320 mm	12.6"

US / CA

Japan (CM)

Korea (MM)

Inches

5.5

38.5

24 cm

240 mm

9.45"

6.5

24.5 cm

245 mm

9.65"

6.5

25 cm

250 mm

9.84"

7.5

40.5

25.5 cm

255 mm

10.04"

7.5

26 cm

260 mm

10.24"

8.5

26.5 cm

265 mm

10.43"

8.5

42.5

27 cm

270 mm

10.63"

9.5

27.5 cm

275 mm

10.83"

9.5

28 cm

280 mm

11.02"

10.5

44.5

28.5 cm

285 mm

11.22"

10.5

29 cm

290 mm

11.42"

11.5

45.5

29.5 cm

295 mm

11.61"

11.5

30 cm

300 mm

11.81"

12.5

47.5

31 cm

310 mm

12.2"

13.5

48.5

32 cm

320 mm

12.6"

About International Footwear & Ring Size Studio

International size converter for footwear, rings, and clothing. Convert Men, Women, and Kids shoe sizes across US, UK, Europe, Japan, Korea, and CM foot measurements. Includes on-screen diameter ring sizer.

Key Capabilities & Features

Men, Women & Kids footwear conversion
US, UK, EU, Japan, Korea & Foot length matrix
Interactive on-screen ring sizer circle
US, UK, Europe, Japan ring standards
Apparel & dress international cross-reference

How to Use International Footwear & Ring Size Studio

Select Category

Choose between Shoe Size Matrix, Ring Sizer, or Apparel Sizing.

Select or Slide

Drag the slider or click any regional size to instantly view equivalents worldwide.

Measure on Screen

In the Ring Sizer tab, place a physical ring on your screen and adjust the circle slider to match.

Privacy & In-Browser Execution Guarantee

Instant client-side mathematical sizing conversions without network requests.

Frequently Asked Questions

How do I measure my foot length at home?

Place a piece of paper on the floor against a flat wall. Stand with your heel against the wall and mark the tip of your longest toe. Measure the distance in centimeters or inches.

How accurate is the on-screen ring sizer?

The on-screen ring sizer dynamically scales in millimeters based on standard display DPI (96 dpi). It provides an accurate visual guide for comparing against an existing physical ring.