EU to US Shoe Size Converter

Convert shoe sizes between the EU (Paris point) and US systems for men, women and kids — in both directions. Every conversion goes through your foot length (Mondopoint, in mm), the most honest bridge between systems, using the ISO/TS 19407 conversion tables. Printable charts below. Everything runs in your browser; nothing is uploaded.

Converter Men’s chart Women’s chart Kids’ chart Method & honesty notes FAQ

Two-way size converter

Pick what you know. Results update instantly.

Convert from

Foot length EU size US size

Foot length

Unit

–

US Men

–

US Women (FIA)

–

US Kids

–

UK Adult

–

Mondo

– mm

Foot length

–

Honest note: brands add different amounts of toe room (typically 13–17 mm), so the same foot can wear EU 42 in one brand and 42.5 in another. Treat converted sizes as accurate to about ±½ size and try shoes on when it matters.

Men's size chart: US ↔ EU

US men's 6–16. UK = US −1. Women's FIA equivalents are in the next chart.

US	EU	UK	Mondo (mm)	Foot (cm)	Foot (in)
6	37.5	5	235	23.7	9.33
6.5	38	5.5	240	24.1	9.50
7	39	6	245	24.6	9.67
7.5	39.5	6.5	250	25.0	9.83
8	40	7	255	25.4	10.00
8.5	40.5	7.5	260	25.8	10.17
9	41.5	8	260	26.2	10.33
9.5	42	8.5	265	26.7	10.50
10	42.5	9	270	27.1	10.67
10.5	43.5	9.5	275	27.5	10.83
11	44	10	280	27.9	11.00
11.5	44.5	10.5	285	28.4	11.17
12	45	11	290	28.8	11.33
12.5	46	11.5	290	29.2	11.50
13	46.5	12	295	29.6	11.67
13.5	47	12.5	300	30.1	11.83
14	47.5	13	305	30.5	12.00
14.5	48.5	13.5	310	30.9	12.17
15	49	14	315	31.3	12.33
15.5	49.5	14.5	320	31.8	12.50
16	50.5	15	320	32.2	12.67

Women's size chart: US ↔ EU (FIA scale)

US women's 5–15 on the FIA scale (women's = men's + 1). Retail 'common' charts (+ 1.5) read half a size larger — see FAQ.

US	EU	UK	Mondo (mm)	Foot (cm)	Foot (in)
5	35	3	220	22.0	8.67
5.5	35.5	3.5	225	22.4	8.83
6	36.5	4	230	22.9	9.00
6.5	37	4.5	235	23.3	9.17
7	37.5	5	235	23.7	9.33
7.5	38	5.5	240	24.1	9.50
8	39	6	245	24.6	9.67
8.5	39.5	6.5	250	25.0	9.83
9	40	7	255	25.4	10.00
9.5	40.5	7.5	260	25.8	10.17
10	41.5	8	260	26.2	10.33
10.5	42	8.5	265	26.7	10.50
11	42.5	9	270	27.1	10.67
11.5	43.5	9.5	275	27.5	10.83
12	44	10	280	27.9	11.00
12.5	44.5	10.5	285	28.4	11.17
13	45	11	290	28.8	11.33
13.5	46	11.5	290	29.2	11.50
14	46.5	12	295	29.6	11.67
14.5	47	12.5	300	30.1	11.83
15	47.5	13	305	30.5	12.00

Kids' size chart: US ↔ EU

US kids' 0–13. Youth 1–7 continue as men's sizes. Kids' UK = US − 0.5.

US	EU	UK	Mondo (mm)	Foot (cm)	Foot (in)
0	14.5	-0.5	85	8.3	3.25
0.5	15	0	85	8.7	3.42
1	15.5	0.5	90	9.1	3.58
1.5	16.5	1	95	9.5	3.75
2	17	1.5	100	9.9	3.92
2.5	17.5	2	105	10.4	4.08
3	18	2.5	110	10.8	4.25
3.5	19	3	110	11.2	4.42
4	19.5	3.5	115	11.6	4.58
4.5	20	4	120	12.1	4.75
5	20.5	4.5	125	12.5	4.92
5.5	21.5	5	130	12.9	5.08
6	22	5.5	135	13.3	5.25
6.5	22.5	6	140	13.8	5.42
7	23.5	6.5	140	14.2	5.58
7.5	24	7	145	14.6	5.75
8	24.5	7.5	150	15.0	5.92
8.5	25	8	155	15.5	6.08
9	26	8.5	160	15.9	6.25
9.5	26.5	9	165	16.3	6.42
10	27	9.5	165	16.7	6.58
10.5	27.5	10	170	17.1	6.75
11	28.5	10.5	175	17.6	6.92
11.5	29	11	180	18.0	7.08
12	29.5	11.5	185	18.4	7.25
12.5	30.5	12	190	18.8	7.42
13	31	12.5	195	19.3	7.58

Method, source & honesty notes

Every number on this page is derived from the formulas below — no hand-typed chart cells.

EU = 0.15 × foot_mm + 2 | US_men = 3 × foot_in − 22 | US_women(FIA) = 3 × foot_in − 21 | US_kids = 3 × foot_in − 9.75

Primary source: the Mondopoint / EU / UK / US conversion tables of ISO/TS 19407:2023 Footwear – Sizing – Conversion of sizing systems (accessed 2026-10-08). The formulas above are the standard's own derivations: one Paris point = 2/3 cm per EU size; the US formulas are the customary Brannock-device relations. Seven anchor cells (220, 240, 260, 270, 280 mm adult and 150, 180 mm kids) were recomputed by hand and matched the standard's table rows exactly before the reference data was frozen.

Rounding: converted sizes are rounded to the nearest half size, ties rounded up (the standard's "round to the larger size for comfort" rule). Mondopoint is the foot length rounded to the nearest 5 mm.

What this converter does not pretend: EU sizes measure the shoe last, not your foot, and last allowance varies by maker (13–17 mm is typical for adults, and the standard itself notes converted sizes can run ½–1 size small versus real European footwear). Women's sizes use the FIA scale (women's = men's + 1) from the ISO tables; many retail charts use a "common" scale (+ 1.5), which reads half a size larger — both are documented in the FAQ so you are never comparing across scales unknowingly.

Scope boundary

Snowshoe sizing ≠ footwear sizing. Our snowshoe-size-lab tool sizes snowshoes (the frames you strap on to walk on snow) from body weight and snow conditions — foot length plays no role there. This page converts footwear sizes (EU ↔ US) from foot length. The two intents are completely different.
Width systems (US B/D/EE letters, UK E/F/G) are not converted here — they vary even more between makers than length does.

Frequently asked questions

Why does my EU size differ by half a size between brands?

Because the EU (Paris point) system measures the shoe last, not your foot, and makers add different amounts of toe room — typically 13 to 17 mm for adult shoes. Converted sizes can also run about half to one size smaller than actual European-made footwear (ISO/TS 19407 notes this explicitly). So a half-size difference between two brands in the same nominal EU size is normal, not an error in this chart. When in doubt, try the shoes on; this converter gives you the standardised starting point.

What is a Paris point?

The Paris point is the unit behind EU sizing: exactly 2/3 cm (6.67 mm) per full EU size, so half sizes step by 3.33 mm. EU size = foot length × 0.15 + 2 (foot length in mm), which is why a 270 mm foot maps to EU 42.5: 0.15 × 270 + 2 = 42.5.

What is Mondopoint, and why is it the most accurate input?

Mondopoint (ISO 9407) is simply your foot length in millimetres — e.g. Mondo 270 means a 270 mm foot. Because it measures the foot directly instead of a last with brand-dependent toe room, it is the canonical bridge this converter uses between EU and US systems. Measure your foot in mm and you remove one layer of brand guesswork.

How do I measure my foot correctly?

Stand barefoot with your weight evenly on both feet, heel against a wall, and measure to your longest toe in millimetres — preferably in the evening, when feet are slightly larger. Measure both feet and use the larger one; left and right feet are often slightly different. Each US half size spans about 4.2 mm, so measure to the nearest millimetre.

Why is US women's shown as men's + 1 here, when stores say + 1.5?

This chart follows the FIA (Footwear Industries of America) scale used in the ISO/TS 19407 conversion tables: women's = men's + 1. Many retailers (Nike, Adidas and others) use a 'common' scale of women's = men's + 1.5. Example: a 270 mm foot is US men's 10, US women's 11 on the FIA scale used here, and would be labelled 11.5 on a retail 'common' chart. That half-size gap is exactly the documented brand variance — both are 'correct' within their own scale, which is why the methodology states the scale explicitly.

How do kids' sizes work — should I add room to grow?

US kids' sizes follow USk ≈ 3 × foot length (in) − 9.75, from size 0 (about an 82.6 mm foot) up to size 13; after that, youth sizes continue as men's sizes 1–7. Makers do build extra wiggle and growth room into children's shoes, so a chart value is a minimum — but do not size up more than half a size beyond it, and re-measure every few months because kids' feet grow fast.

Is this the same as snowshoe sizing?

No. Snowshoe sizing is based on your body weight plus snow conditions (flotation), not on foot length at all — see our snowshoe-size-lab tool, which covers MSR, Tubbs, Atlas, Yukon and TSL charts. This page converts footwear sizes (EU ↔ US for men, women and kids) via foot length; the two intents are completely different.

What about UK sizes?

Adult UK sizes run one full size below US men's (UK = US men − 1), so US men's 10 is UK 9 — both columns are included in the charts above for convenience. Kids' UK sizes run half a size below US kids'.

Free tool by NRTechStudio

EU to US Shoe Size Converter

Two-way size converter

Men's size chart: US ↔ EU

Women's size chart: US ↔ EU (FIA scale)

Kids' size chart: US ↔ EU

Method, source & honesty notes

Scope boundary

Frequently asked questions

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