Interactive tool · Fit
Nike vs Under Armour: leggings size conversion
Size-by-size equivalents, matched by hip measurement from each brand’s published women’s bottoms chart. Where a size falls between two sizes of the other brand, both are shown.
Nike → Under Armour
| If you wear Nike | Nike hips | Choose Under Armour |
|---|---|---|
| XXS | 81 cm · 31.5″ | — |
| XS | 87 cm · 34.5″ | XS |
| S | 94 cm · 37″ | S |
| M | 101 cm · 40″ | M / L |
| L | 108 cm · 42.5″ | L / XL |
| XL | 116 cm · 45.5″ | XL / XXL |
| XXL | 123 cm · 48.5″ | XXL |
| 1X | 133 cm · 52.5″ | — |
| 2X | 141 cm · 55.5″ | — |
| 3X | 150 cm · 59″ | — |
Under Armour → Nike
| If you wear Under Armour | Under Armour hips | Choose Nike |
|---|---|---|
| XS | 89 cm · 35″ | XS |
| S | 94 cm · 37″ | S |
| M | 99 cm · 39″ | S / M |
| L | 105 cm · 41.5″ | M / L |
| XL | 113 cm · 44.5″ | L / XL |
| XXL | 121 cm · 47.5″ | XL / XXL |
Between two sizes? Choose the smaller one for running, gym and compression; choose the larger one for long days, travel or if waistbands tend to dig in.
At a glance
Nike
- Size range
- XXS–3X
- Chart published in
- inches
- Source
- Brand chart ↗
- Where Nike offers short and tall versions, short is 5 cm (2″) shorter and tall 5 cm (2″) longer in the inseam than regular.
Under Armour
- Size range
- XS–XXL
- Chart published in
- centimetres
- Source
- Brand chart ↗
- Under Armour describes its chart as “desired standards” and notes that some variability may occur.
Brand size charts in cm and inches
Nike
| Size | Waist (cm) | Hips (cm) | Waist (in) | Hips (in) | Other labels |
|---|---|---|---|---|---|
| XXS | 54–60 | 77–84 | 21.25–23.5 | 30.5–33 | US 0 |
| XS | 60–66 | 84–90 | 23.5–26 | 33–35.5 | US 0–2 |
| S | 66–74 | 90–98 | 26–29 | 35.5–38.5 | US 4–6 |
| M | 74–80 | 98–104 | 29–31.5 | 38.5–41 | US 8–10 |
| L | 80–88 | 104–112 | 31.5–34.5 | 41–44 | US 12–14 |
| XL | 88–98 | 112–119 | 34.5–38.5 | 44–47 | US 16–18 |
| XXL | 98–108 | 119–127 | 38.5–42.5 | 47–50 | US 20–22 |
| 1X | 109–116 | 130–137 | 43–45.5 | 51–54 | US 18W–20W |
| 2X | 116–124 | 137–145 | 45.5–49 | 54–57 | US 22W–24W |
| 3X | 124–135 | 145–155 | 49–53 | 57–61 | US 26W–28W |
Under Armour
| Size | Waist (cm) | Hips (cm) | Waist (in) | Hips (in) | Other labels |
|---|---|---|---|---|---|
| XS | 65–68 | 87–91 | 25.5–27 | 34.5–36 | US 0–2 |
| S | 68–74 | 91–96 | 27–29 | 36–38 | US 4–6 |
| M | 74–79 | 96–101 | 29–31 | 38–40 | US 8–10 |
| L | 79–86 | 101–109 | 31–34 | 40–43 | US 12–14 |
| XL | 86–94 | 109–117 | 34–37 | 43–46 | US 16 |
| XXL | 94–102 | 117–124 | 37–40 | 46–49 | US 18 |
How the converter decides
Each size is reduced to the centre of its published hip range (or the single hip value the brand gives). Your hip measurement — or the hip of the size you already wear — is compared with those centres.
If you are within 30% of the gap to the nearest size, you get that size. In the middle of the gap you see both sizes, because the choice then depends on the fit you want, not on the chart.
Waist is shown as a second opinion. In leggings the hip and seat decide whether the fabric stays opaque and stays up; a waist that points one size smaller usually just means a firmer waistband.
Other brand comparisons
LEGGIC is independent and not affiliated with any brand shown. Brand names are used only to identify their published size charts; trademarks belong to their owners.