Is a 30N the same in every brand?

No - a 30N isn't identical across brands, because brands use different sizing systems and cup depths. Here's how a standard US 30N translates in the brands we track: ThirdLove 30N, Wacoal 30N, Panache 30JJ, Freya 30JJ, Elomi 30JJ, Glamorise 30N, b.tempt'd 30N, Fantasie 30JJ. SHEFIT, Kindred Bravely, ENELL size by their own chart instead of band/cup.

What are the sister sizes for 30N?

30N's sister sizes — same cup volume, different band — are 28O and 32M. Try a sister size if the band feels too tight or loose but the cup still fits.

30N Bras

What is a 30N in other brands?

46 bras tracked in 30N · 3 brands · See all N cup

Brands: Fantasie, Freya, Panache

Your 30N across brands

A 30N isn’t the same in every brand. Here’s how a standard US 30N translates across the brands we track — and how each one runs.

Brand	How it runs	Your 30N →
ThirdLove	cups run generous	30N
Wacoal	true to size	30N
Panache	true to size	30JJ
Freya	band runs small	30JJ

What is a 30N in other brands? See all 30+ brands →

Editorial buying guide

Read the 30N buying guide

Top picks, sister sizes, and how to spot a good 30N fit.

Read →

Sister sizes

28O 32M What are sister sizes?

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Your 30N across brands

Kira Active Balcony Swimsuit - Mulberry

Tango Balcony Bra - Nutmeg

Tango Balcony Bra - Navy

Envy Full Cup Bra - Terracotta

Botanical Balcony Bikini Top - Botanical Floral

Tango Balcony Bra - Chai

Botanical Balcony Tankini Top - Botanical Floral

Envy Full Cup Bra - Chai

Envy Full Cup Bra - Chestnut

Envy Full Cup Bra - Teal

Eva Balcony Tankini Top - Sicily Print

Paloma Balcony Swimsuit - Black Sand Print

Paloma Balcony Swimsuit - Capri Print

Paloma Balcony Swimsuit - Navy Gingham

Paloma Balcony Swimsuit - Flutter Print

Freya Fancies Balcony Bra (GG - K Cup): White

Freya Fancies Balcony Bra (GG - K Cup): Natural Beige

Freya Fancies Balcony Bra (GG - K Cup): Black

Starlight Side Support Balcony Bra (J - O Cup): Caramel

Starlight Side Support Balcony Bra (J - O Cup): Black

Viva Side Support Bra: Lace Natural Beige

Tango Edit Balcony Bra - White

Anya Riva Spot Balcony Swimsuit - Navy/Vanilla

Offbeat Side Support Bra: Rosehip

Offbeat Side Support Bra: Natural Beige

Offbeat Side Support Bra: Black

Anya Riva Balcony Swimsuit - Black

Tango Balcony Bra - Honey

Tango Balcony Bra - Blush

Tango Balcony Bra - Black

Nina Balcony Bra - Black Leopard

Serene Full Cup Bra - Noir

Belle Full Cup Bra (J - N Cup): White

Belle Full Cup Bra (J - N Cup): Natural Beige

Belle Full Cup Bra (J - N Cup): Black

Serene Full Cup Bra - Vintage

Celeste Balcony Bra - Pistachio

Cora Balcony Bra - Soft Pink

Envy Full Cup Bra - Ivory

Envy Full Cup Bra - Navy

Envy Full Cup Bra - Black

Envy Full Cup Bra - Fuchsia Pink

Envy Full Cup Bra - Honey

Iris Balcony Tankini Top - Black Gingham

Paloma Balcony Swimsuit - Red Gingham

Paloma Balcony Swimsuit - Black Gingham