Does it run true to size? / Under Armour

Does Under Armour run true to size?

Under Armour women's shoes, by its own chart

True to size by its chart

By its own size chart, Under Armour is true to size: each size is built for about the same foot length as the median of 14 other brands' charts. Start with your usual size.

Source: Under Armour size guide, checked 2026-09-18.

Convert your size to Under Armour Under Armour products and size chart

If you wear this at another brand, buy this at Under Armour

US women's sizes. Each cell reads the other brand's own chart, then finds the Under Armour size built for the same foot (or the same label, when one chart has no foot lengths).
You wear	Size 7 there	Size 8 there	Size 9 there
Nike	Under Armour 7	Under Armour 8.5	Under Armour 9.5
adidas	Under Armour 7 or 6.5	Under Armour 8	Under Armour 9
HOKA	Under Armour 7	Under Armour 8	Under Armour 9
Brooks	Under Armour 7	Under Armour 8	Under Armour 9
ASICS	Under Armour 7	Under Armour 8.5	Under Armour 9 or 9.5
New Balance	Under Armour 7	Under Armour 8.5	Under Armour 9.5
On	Under Armour 7	Under Armour 8.5	Under Armour 9.5
Saucony	Under Armour 6	Under Armour 8	Under Armour 9

Every size, not just these three: follow a brand name for the full Under Armour table.

Size by size: Under Armour against the other charts

The foot length Under Armour builds each US women's size for, beside the median of every other brand that publishes one. Half a US size is 0.42 cm.
US women's	Under Armour builds it for	Median brand	Difference
6	23.5 cm	23 cm (14 brands)	+0.50 cm
6.5	23.5 cm	23.5 cm (13 brands)	same
7	24 cm	24 cm (14 brands)	same
7.5	24 cm	24.2 cm (13 brands)	-0.20 cm
8	24.5 cm	24.55 cm (14 brands)	-0.05 cm
8.5	25 cm	25 cm (12 brands)	same
9	25.5 cm	25.5 cm (14 brands)	same
9.5	26 cm	26 cm (12 brands)	same
10	26.5 cm	26.5 cm (14 brands)	same

Tinted rows differ by half a size or more. Brands round their foot lengths, often to the half centimetre, so read the average, not a single row.

What a size chart cannot tell you

A chart gives one number per size: the foot length. Width, toe box shape, the heel and how much the upper stretches are on no chart, and they decide whether a shoe feels short. That is why people sometimes say a brand runs small when its chart says it runs long: a narrow toe box can crowd a foot the chart says fits.

If you have wide feet or sit between sizes, take the larger size, or check whether the model comes in a wide fit.

Wearer reports appear on the shoe converter once five people who own both brands have told us what fits. They rank above the charts, because charts describe a shoe and wearers describe a fit. Add a pair you own to help.