Size Guide – UGG Boots & Slippers

Find Your Perfect Fit

Our UGG boots and slippers use UK/AU sizing. Use the chart below to find your size, then read our fit tips before ordering.

Size Conversion Chart

UK / AU EU US Men's US Women's Foot Length (cm)
4 37 5 6 23.0
5 38 6 7 24.0
6 39 7 8 25.0
7 40–41 8 9 26.0
8 41–42 9 10 27.0
9 43 10 11 28.0
10 44 11 12 29.0
11 45 12 13 30.0
12 46 13 14 31.0

Fit Guide

  • Unisex sizing (UK 4–12): Our boots and slippers are listed in UK/AU men's sizes.
  • Women's sizing: Ladies, order 2 sizes down from your usual women's size. For example, if you normally wear a women's AU 8, order a UK 6.
  • Fit feel: UGG boots are designed to fit snugly at first — the sheepskin wool lining will compress and mould to your foot over the first few wears. If in doubt between two sizes, size down.
  • Width: Our boots suit a standard to wide foot. If you have a very narrow foot, consider sizing down.
  • Slippers: Slippers follow the same sizing as boots. For a roomier, relaxed fit, size up by half a size.

How to Measure Your Foot

  1. Place a piece of paper on a hard floor and stand on it.
  2. Trace around your foot with a pen held vertically.
  3. Measure the longest distance from heel to toe in centimetres.
  4. Match your measurement to the chart above.

Still unsure? Contact us and we'll help you find the right size.