US numeric to Letter leggings size
The short answer
By the formula, US numeric 00 is Letter XXS. On brand charts the most common answer is XS (14 of 18 brands), and 4 different answers are in print.
The formula and the brands' most common answer differ on 2 of 12 sizes below. Use the brand's own number for the brand you are buying.
| US numeric | Letter by formula | Most brands print | Other answers in print |
|---|---|---|---|
| 00 | XXS | XS (14 of 18) | XXS: Adanola, Aerie (OFFLINE), Alo Yoga, Athleta, Bo+Tee, Fabletics, Nike, Old Navy, SKIMS, Terez, Under Armour, Vuori, Zella; 2XS: adidas; X/S: Onzie |
| 0 | XS | XS (14 of 18) | XXS: Adanola, Aerie (OFFLINE), Alo Yoga, Athleta, Bo+Tee, Fabletics, Nike, Old Navy, SKIMS, Terez, Under Armour, Vuori, Zella; 2XS: adidas; X/S: Onzie |
| 2 | XS | XS (16 of 25) | XXS: Colorfulkoala, Gymshark, Lorna Jane, lululemon, Sweaty Betty, Varley; Extra Small: Year of Ours; S: Vuori; S/M: Onzie; X/S: Onzie |
| 4 | S | S (16 of 25) | XS: Alo Yoga, Colorfulkoala, Gymshark, Lorna Jane, lululemon, SET Active, Sweaty Betty, Terez, Varley; Extra Small: Year of Ours; S/M: Onzie; SM: Under Armour; Small: Year of Ours; XXS: Gymshark |
| 6 | S | S (19 of 25) | M: Adanola, Bo+Tee, Vuori; M/L: Onzie; Medium: Year of Ours; S/M: Onzie; SM: Under Armour; Small: Year of Ours; XS: Gymshark |
| 8 | M | M (21 of 25) | L: Adanola; M/L: Onzie; MD: Under Armour; Medium: Year of Ours; S: Gymshark |
| 10 | M | M (14 of 25) | L: Bo+Tee, Colorfulkoala, Gymshark, Lorna Jane, lululemon, Outdoor Voices, Sweaty Betty, Varley, Vuori; L/L: Onzie; Large: Year of Ours; MD: Under Armour; XL: Adanola |
| 12 | L | L (15 of 25) | XL: Bo+Tee, Colorfulkoala, Gymshark, Lorna Jane, lululemon, Outdoor Voices, Sweaty Betty, Varley; L/L: Onzie; Large: Year of Ours; LG: Under Armour; XXL: Adanola |
| 14 | L | L (12 of 24) | XL: Bo+Tee, Gymshark, Onzie, Outdoor Voices, Vuori; XXL: Colorfulkoala, Gymshark, Lorna Jane, lululemon, Sweaty Betty; Extra Large: Year of Ours; LG: Under Armour; XXXL: Adanola |
| 16 | XL | XL (15 of 18) | XXL: Bo+Tee, Gymshark; 1X: Onzie; Extra Large: Year of Ours; XXL/1X: Fabletics |
| 18 | XL | XL (9 of 16) | XXL: Under Armour, Vuori, Zella; 1X: Onzie, Spanx; 2X: SKIMS, Year of Ours; XXL/1X: Fabletics |
| 20 | XXL | 2X (5 of 14) | XXL: Aerie (OFFLINE), Nike, Old Navy, SET Active, Vuori; 1X: Spanx, Terez; 2XL: adidas, Alo Yoga; 3XL: Under Armour |