Bra sizes aren’t universal. If you’re shopping internationally or trying a new brand, you’ve probably encountered different sizing systems. It’s easy to get confused, especially when trying to convert a UK cup size to US.
This guide will help you understand the differences between UK and US bra sizes and how to find your perfect fit. Keep in mind that even with conversions, accurate measurements and brand-specific fit are key!
Understanding bra size components
Bra sizes can be confusing, but they’re based on two measurements: the band size and the cup size.
Band size
The band size is the number that indicates the measurement around your ribcage directly under your bust. This is typically measured in inches, but you may also see it measured in centimeters.
In the US and the UK, band sizes are generally similar, but you may notice some differences, particularly if you’re looking at older sizing systems.
Cup size
The cup size is the letter you see after the number. It represents the difference between your band size and your bust measurement and indicates the volume of the breast.
Cup sizes increase alphabetically, such as A, B, C, D, DD/E, and so on. The differences in how cup sizes are measured in the US and UK can cause confusion for bra shoppers.
UK to US Bra Size Conversion Chart
Bra sizes aren’t universal, and it can be tricky to figure out what your UK size is in U.S. sizing.
Cup Size Conversion
Here’s a basic conversion chart to help you get started:
- UK A = US A
- UK B = US B
- UK C = US C
- UK D = US D
- UK DD = US DD
- UK E = US DDD
- UK F = US G
- UK FF = US H
- UK G = US I
- UK GG = US J
- UK H = US K
- UK HH = US L
Keep in mind that this is only an approximate conversion. How a bra fits can depend on a number of things, including whether it’s underwired.
Band Size Conversion
In most cases, UK and US band sizes are the same. However, it’s always best to check the brand’s specific sizing guide before you buy.
You may need to adjust the band size if the bra feels too tight or too loose. It’s always a good idea to follow the individual pattern instructions to get an accurate fit.
What affects bra fit and size?
Bra size isn’t an exact science. Here are some of the things that can affect how a bra fits:
- Bra style: Sports bras, bralettes, underwired bras, and non-wired bras all tend to fit differently. Even among underwired bras, the style affects the fit.
- Brand variation: Bra sizes can vary a lot between brands. Always check a brand’s size guide before buying.
- Measurement technique: Accurate measurement is key. Follow our step-by-step guide to measuring your bra size.
- Body changes: Weight fluctuations and pregnancy can also change your bra size.
Frequently Asked Questions
What is 32 bra size in the UK?
A “32” bra size refers to the band size, which is the same in both the UK and the US. So, a 32 band size is a 32 band size, regardless of where you are. The cup size will then determine the overall bra size.
What is 34C bra size in the UK?
A 34C bra size is the same in both the UK and the US. The band size (34) remains consistent, and the cup size (C) is also the same in both sizing systems. A bra labeled 34C in the UK will fit the same as a 34C in the US.
Are US and UK cup sizes the same?
Generally, yes, US and UK cup sizes are the same up to a DD cup. However, after DD, the sizing can diverge. For example, a US DDD cup is often equivalent to a UK E cup. Always refer to a specific conversion chart for sizes beyond DD to ensure the correct fit.
What is UK bra size in the US?
The band sizes are equivalent, so a UK 36 is a US 36. The cup sizes are also equivalent up to a DD. However, if you’re a DD cup or larger, you’ll need to convert the UK size to the US equivalent, which is often one cup size larger. For example, a UK E cup is a US DDD cup.
The Bottom Line
Wearing a bra that fits well is essential for comfort and support. If you’re trying to figure out your bra size when buying online or from a store that uses a different sizing system, it helps to know how UK and US sizes compare.
The bra size conversion charts in this article will give you a good starting point.