The Complete UGG Size Guide

Updated September 2026 — both charts rebuilt cell by cell from UGG's own published women's and men's size charts. The previous single table carried UGG's men's EU scale alongside a women's column, so every women's EU conversion on this page was a full size too high, and the heel-to-toe column was a generated ramp rather than UGG's published measurements. Both are corrected. The converter is now keyed to the tables on this page and no longer converts between men's and women's.

UGG footwear fits true to size: take your normal size. If you are converting from UK, EU or a foot measurement, use the chart for the style you are buying — UGG publishes separate women's and men's charts, and they do not line up on the EU scale. PUSHAS, the global marketplace for authenticated hype sneakers, streetwear and collectibles, lists UGG boots and slippers authenticated by hand.

How do UGGs fit?

UGG boots and slippers are designed to fit true to size. The sheepskin lining feels snug at first and compresses as you wear it, so a pair that is roomy on day one will be loose in a month. Your toes should be able to move, with roughly a thumb's width at the end.

The one thing worth getting right is the number you convert from. Measure your foot heel to toe, standing, late in the day, and match it to the Heel-to-Toe column in the chart for the style you are buying. UGG publishes that measurement in inches; the centimetre column here is converted from it at 2.54 cm to the inch.

UGG women's size chart

UGG men's size chart

UGG size converter

Pick the chart for the style you are buying, tell it which number you know, and it returns the rest of that row. It reads the tables above rather than calculating, so it can only ever return a size UGG publishes.

UGG styles live on PUSHAS

Read from live listings on 24 September 2026. Sizes move daily, so the listing is the current record — and the live listing shows the current price.

Buying a men's style? The UGG Tasman Slipper 'Chestnut' (2020) was live in seven US men's sizes, US M7 to US M13, on the same date.

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How to measure your foot

1. Measure late in the day. Feet swell as the day goes on, so an afternoon measurement is the honest one.
2. Stand up. Measuring seated understates the length, because the foot spreads under load.
3. Measure both feet. Use the larger one.
4. Wear the socks you will wear with them. Thin for slippers, thicker for winter boots.
5. Match the length to the chart for the style you are buying, then round up if you land between rows.

What affects UGG fit

• Twinface sheepskin. Double-sided, so it insulates and holds shape while the wool side compresses to your foot.
• The wool interior compresses. Expect a snug pair to relax; expect a roomy pair to get roomier.
• Style does not change the size. Classic boots, Ultra Mini, Tasman and Tazz slippers all follow the same true-to-size rule.
• Width. UGG publishes one standard width; the sheepskin absorbs most of the variation.

Keeping the fit

• Brush the nap gently when dry to keep the shape.
• Never machine wash — it changes both the shape and the fit.
• Store upright rather than folded.

Frequently asked questions

Do UGGs fit true to size?

Yes. UGG designs its footwear to fit true to size, so take your normal size. The sheepskin lining compresses with wear, so a pair that feels snug at first will relax; a pair that feels roomy on day one will be loose later.

What is a US women's 7 in UGG EU sizing?

EU 38, on UGG's published women's chart, with a heel-to-toe length of 9.5 inches (24.1 cm). UGG's men's chart puts EU 38 at a US men's 5 — the two scales are not interchangeable, which is why this page carries both charts separately.

What UK size is a US women's 8 in UGG?

UK 6, with a heel-to-toe length of 9.8 inches (24.9 cm).

How do I measure my foot for UGGs?

Stand up, late in the day, and measure heel to toe on both feet. Take the larger measurement and find the first row in the chart for your style whose heel-to-toe length is at least that long.

Do UGG slippers and boots use the same sizing?

Yes. Classic boots, the Ultra Mini, and the Tasman and Tazz slippers all follow the same true-to-size rule and the same charts.

Are UGGs on PUSHAS authentic?

Every pair is authenticated by hand by PUSHAS before it ships, with global shipping from Sydney and Los Angeles, so you can shop with confidence.

This guide is a reference. Individual fit varies with foot shape and preference, and UGG's published charts are the source for every conversion on this page.