What size am I in other brands?

Your size depends on the brand. A Medium in Nike is not the same as a Medium in Zara or H&M. Each brand defines their own measurements. To find your size, start with a brand you already own and convert it using WhatSize.

How do I find my clothing size without measuring?

Use a piece of clothing you already own that fits well. Enter the brand, category, and size into WhatSize, and it will calculate your equivalent size in any other supported brand using real measurement data.

What size is a US Medium in Europe?

A US Medium typically corresponds to EU 48-50 for men or EU 38-40 for women, but this varies significantly by brand. Nike M, Zara M, and H&M M all have different actual measurements. Use brand-specific conversion for accurate results.

What size am I in Japanese clothing?

Japanese sizing often runs smaller than US or EU sizing. A US Medium might be an L or XL in Japanese brands. Shoe sizes also differ. A US 10 is typically a JP 28. WhatSize converts between US, UK, EU, and Asian sizing systems.

FIND YOUR SIZE

What size am I?

It depends on the brand.

A Medium in Nike is not the same as a Medium in Zara. Find your actual size in any brand, without a measuring tape.

12:23 ●●●● ◯ ⚡

FEMALE

MALE

UNISEX

I WANT TO BUY Bottoms

I WANT TO BUY FROM Adidas

IN Asia

WHATSIZE RECOMMENDS

BRAND: ADIDAS

ITEM: BOTTOMS

SIZE M

WAIST: 81-86 CM

Why sizes are different everywhere

There are zero international standards for clothing sizes. Every brand defines their own measurements for "Medium" or "Size 10."

The same size label can differ by 2-4 inches between brands. A Nike Medium (chest 99-104cm) is not the same as a Zara Medium (chest 96-100cm).

Regional sizing makes it worse. US, UK, EU, Japanese, and Korean sizing systems all use different numbers for the same body measurements.

How to find your size (without measuring)

You don't need a tape measure. You just need one piece of clothing that fits you well.

Step 1

Pick a shirt, hoodie, or pair of jeans you own that fits perfectly. Note the brand and size on the label.

Step 2

Enter that brand and size into WhatSize. This is your "anchor", the reference point for all conversions.

Step 3

Choose the brand you want to buy from. WhatSize compares the real measurements and tells you your exact size.

Common size questions

What size am I in Zara if I'm a Nike Medium?

It depends on the category and region. Nike and Zara measure differently. A Nike M in the US might be a Zara L in EU sizing. WhatSize uses the actual centimetre measurements from both brands to give you the right answer.

What's my EU size if I wear US 10?

General charts say US 10 = EU 40, but brand-specific sizing can vary by 1-2 sizes. A US 10 in H&M is not the same as a US 10 in Gap. Always check the specific brand, not just the region.

What size am I in Japanese brands?

Japanese sizing typically runs smaller than US or EU sizing. A US Medium might be an L or XL in Japanese brands. WhatSize supports Uniqlo and converts between US, UK, EU, and Asian sizing systems.

What size am I in Korean brands?

Korean sizing uses different numbering. WhatSize converts between Korean and international sizing so you can shop Korean brands with confidence, whether online or in-store.

Do I need to measure myself?

No. WhatSize works by converting between brands. If you own a Nike shirt in size Large, you just enter that and the app tells you what size to buy in Zara, H&M, or any other supported brand.

Stop guessing. Know your size.

WhatSize converts sizes across Nike, Zara, H&M, Adidas, Uniqlo, Levi's, Gap, and ASOS. Works offline. $1.99 one-time.

Available on iOS. Coming soon to Android.