What size am I in Sperry?

Measure your foot length in mm, then use the Sperry size chart above or our interactive calculator. For example, a 270mm foot is typically US 9 in most brands.

How does the Sperry Authentic Original Boat Shoe fit?

Runs large. Leather stretches. Size down.

Sperry Size Chart — US, EU, UK Conversion

Fit note: True to size for most people.

📏 Find Your Sperry Size

Enter your foot length to get your exact Sperry size instantly.

Foot length (mm)

Gender

Men's Sizes

US	EU	UK	CM
7	40	6.5	25.0
7.5	40.5	7	25.5
8	41	7.5	26.0
8.5	42	8	26.5
9	42.5	8.5	27.0
9.5	43	9	27.5
10	44	9.5	28.0
10.5	44.5	10	28.5
11	45	10.5	29.0
11.5	45.5	11	29.5
12	46	11.5	30.0
13	47.5	12.5	31.0

Women's Sizes

US	EU	UK	CM
7	40	6.5	25.0
7.5	40.5	7	25.5
8	41	7.5	26.0
8.5	42	8	26.5
9	42.5	8.5	27.0
9.5	43	9	27.5
10	44	9.5	28.0
10.5	44.5	10	28.5
11	45	10.5	29.0
11.5	45.5	11	29.5
12	46	11.5	30.0
13	47.5	12.5	31.0

Model-Specific Fit Guide

Different Sperry models fit differently. Check your specific shoe below.

Model	Fit	Tip
Authentic Original Boat Shoe	Runs large (+3.0mm) Wide	Runs large. Leather stretches. Size down.
CVO 2-Eye	True to size	True to size. Canvas sneaker.
Cloud	True to size	True to size.
Crest Vibe	True to size	True to size. Women's platform sneaker.
Gold Cup Authentic Original	Runs large (+3.0mm) Wide	Runs large. Premium leather, size down.
Lido	True to size	True to size.
Pier 4	True to size	True to size.
Saltwater Duck Boot	Runs large (+2.0mm) Wide	Runs slightly large. Rain boot.
Seawolf	True to size	True to size.
Tide	True to size	True to size.

SIMILAR FIT

361 Degrees APL ASICS ASOS Adidas Alden