
For example, a US bra size 40DDD or 40F is equal to a UK 40E, an Australian 18E, a French 105F, an Italian 5F, and a 90F elsewhere in Europe. How to Measure Your Bra Size Whether you use the calculator, the chart, or want to work out your accurate bra size yourself, you’ll need at least two key measurements – over and under your bust.
40 BAND SIZE | ||
---|---|---|
Current Bra Size | Sister Size DOWN | Sister Size UP |
40DD(E) | 38DDD(F) | 42D |
40DDD(F) | 38DDDD(G) | 42DD(E) |
40DDDD(G) | 38DDDDD(H) | 42DDD(F) |
What bra size is 40D?
You’ll find the alphabetical equivalent of this in a generic U.S. cup size chart is D in the below size chart. Therefore, your recommended bra size is 40D (band size + cup size). An addition to our International Bra size chart is the conversion table for Bra Sister Sizes.
Is a US DDD the same cup size as a UK e?
Yes, a US DDD is the same cup size as a UK E. Why do some US lingerie brands use the size DD/E on their bra tags? We think this is confusing too. Some US lingerie brands list a DD cup size as DD/E on their size tags. So if you see a DD/E on a bra that uses US bra sizing, keep in mind that the bra is a US DD.
What size should I get if I wear a DDD?
MOD By Parfait uses UK sizing, so if you usually wear a DDD in US lingerie brands, you’ll want to opt for an E cup size in our lingerie. Why does bra sizing change after DD? When it comes to US and UK bra sizing, the bra cup size (the letter) is the same for both US and UK sizing up to a DD cup.
What is the difference between bra sizes 36C and 40A?
For example, the row with bra sizes 36C, 38B, and 40A all have the same cup volume, but have different band sizes. The same goes for the row with bra sizes 38H, 40G, 42F, 44E, 46D, and 48C. Am I wearing my bra correctly?

Is a DDD same as an F?
Is a DDD the same as an F? It might seem confusing, but yes a DDD is the same as an F—at times they are labeled differently based on the brand. After size D you can either go up to size DD which is the bra size equivalent to size E, size DDD which is equivalent to size F, and size DDDD which is equivalent to size G.
What is the equivalent of DDD cup size?
FCup Size ChartDifferenceUS (United States)EU (European)4”DD5”DDE6”DDD/FF/DDD7”GG12 more rows
What is 38E equivalent to?
International bra size conversion tableEURUKUSA85F38E38DD85G38F38E85H38G38F85I38H38G77 more rows
Is DDD considered E?
Many European brands (and some American brands) use the lettering “E” for a DD cup size and “F” for a DDD cup size.
Is DDD the same as G cup?
Yes, in American bra sizes, a G cup would similar to a DDDD.
What is the sister size for 40ddd?
So, if you’re currently wearing a 40DD, your sister sizes are 38E, 36F, 34FF, 32G, 30GG and 28H.
What is the smallest bra size?
Generally, the A cup is considered the smallest available but for some this is still too big and compensating with a smaller band size won’t help. If you want something that’s going to fit your form you’ll have to go down a level to an AA or even AAA cup.
What is the difference between DDD and F cup?
A DD cup = E for full figure bras, DDD = F, but if you are used to buying a standard bra that comes in cup sizes B-DD and no higher, there will be about a half cup size increase between the DD in a standard style and a DD/E in a full figure style.
Is a 38B the same as a 40A?
“Down” means the opposite – one actual size smaller and one letter name larger. For example, if you wear a 38B, your Sister Size Up would be 40A, and your Sister Size Down would be 36C.
How much do DDD breast weigh?
How Much Do DDD Breasts Weigh? DDD cups usually weigh around 5-6 pounds, or 2.5-3 pounds per breast.
Is DDD bigger than DD?
A DD cup will fit bigger than a D cup. If your breast tissue is overflowing out of a D cup or you’re noticing a gap in your DDD/E bra cups, you might want to try a DD cup.
Is C cup bigger than D cup?
A D cup is an inch larger than a C cup.
What size is equivalent to 34DDD?
For example, if you wear a 34C, your Sister Size UP would be 36B….SISTER SIZE CHARTS:34 BAND SIZECurrent Bra SizeSister Size DOWNSister Size UP34D32DD(E)36C34DD(E)32DDD(F)36D34DDD(F)32DDDD(G)36DD(E)5 more rows
How much do DDD breast weigh?
How Much Do DDD Breasts Weigh? DDD cups usually weigh around 5-6 pounds, or 2.5-3 pounds per breast.
What is the difference between DDD and F cup?
A DD cup = E for full figure bras, DDD = F, but if you are used to buying a standard bra that comes in cup sizes B-DD and no higher, there will be about a half cup size increase between the DD in a standard style and a DD/E in a full figure style.
What is BTEC DDD equivalent to?
BTEC and A Level UCAS pointsDiplomaUCAS tariff pointsDDD144DDM128DMM11210423 more rows
What is the bra sister size for DDD or E?
Do you wear a 34DDD or 36DDD bra? For a 34DDD, the bra sister sizes are 36DD and 32DDDD/G (US) or 32F (UK).
What is a DD cup?
Some US lingerie brands list a DD cup size as DD/E on their size tags. So if you see a DD/E on a bra that uses US bra sizing, keep in mind that the bra is a US DD. If you’re looking for an E cup, you’ll want to size up to a US DDD.
Is the bra cup the same as the DD cup?
When it comes to US and UK bra sizing, the bra cup size (the letter) is the same for both US and UK sizing up to a DD cup. After a DD cup, US and UK bra sizing starts to look a little different. If you wear larger than a DD cup, you’ll need to convert your bra size from US to UK bra sizing or vice versa to get the right size.
Bra Size Conversion Chart
US: USA and Canda
EU: Europe (most countries) and Japan
UK: England, Ireland, Scotland, Wales
FR: France, Spain, Belgium, Portugal
IT: Italy
AUS: Australia and New Zealand
Note about cup size: In this bra size conversion chart, all bra sizes start with cup size AA. This will work with most bra models.
Comments, Tips & Tricks..
Got any bra size conversion tips or tricks? Or maybe a question on converting bra size? Let us hear. Thanks!
How to Use The Bra Size Chart
ThirdLove offers over 80 bra sizes from a 30 to 48 band and an AA to I cup! Using your current bra size as a starting point, you can refer to the chart above to refine your fit.
Quick Tips and Fixes to Find Your Bra Size
Too small: Go up half a cup (if you’re experiencing minor overflow) or up a full cup (if you’re experiencing major overflow).
What is the difference between a 36C and a 34C bra?
A bra in size 36C has a bigger cup (larger cup volume) than a bra in size 34C (even though they both are labeled with C-cups). The same applies to i.e. a 36B and a 38B; the 38B has a larger cup volume than the 36B (but they both have cup size letter B). But what is very interesting, is that the 38B bra actually have the same cup size as …
Can 36C and 38B fit the same bust?
In short: both 38B and 36C can fit the same bust – they are “sister sizes” with the same cup volume. 36B and 34C are also “sister sizes “. In short: More bra sizes can fit your bust! See which bra sizes that have same cup volume in the bra sister size charts below. Remember: Different “bra sister sizes” can be used by the same woman …
Are you having trouble figuring out your bra sister size?
Finding a bra that fits well is challenging as it is and converting the bra into its sister size can be even more difficult.
What is a sister size?
For those of you wondering, the cup volume of a sister size is closest in fit to your true bra size. For example, if you normally wear a 34D in bras, your sister bra sizes are 32DD and 36C.
Sister Sizing Tips
Though some of us have found bras that fit well in sister sizes, please remember that the fit will likely be different from the size you typically buy.
We Highly Recommend
Whether you’re shopping for new everyday bras or lingerie for a special occasion, it’s always a good idea to seek out a second opinion. We know how hard it is to find bras that fit well and feel good, especially when you’re doing it on your own.
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Katie Donnelly is a full-time freelance writer, content manager, and founder of Katie Rose Creative. An experienced bra fitter, Katie has helped hundreds of people shop for lingerie. Her favorite bra is the Sandrine Plunge Longline Bra. View all posts by Katie Donnelly
Measuring Bra Size
Many different factors are involved in determining your ideal bra size, which can make measuring yourself to figure out your bra size very complicated. However, learning how to measure your own bra size at home with as much accuracy as possible gives you the power to make sure every bra you buy and wear fits you well.
Bust Size vs. Bra Size
It’s easy to get confused over the difference between your bust size and your bra size. After all, the purpose of bras is to fit, support, and secure your bust. However, the size of your bust is not the only thing you need to consider
How to Measure Bra Band Size
Measuring your band size correctly is key if you want to end up with a bra that fits comfortably and offers enough support and security for your best. The band of your bra is responsible for supplying the majority of the support your bra provides.
How to Measure Bra Cup Size
Your bra cup size is a combination between your bust size and your band size. Always measure your band size before measuring your cup size so that you know your band measurement and can compare it to your bust measurement to determine your ideal cup letter.
Bra Size Charts
Bra size charts are a measurement tool that lays out the basics of bra sizes and how they correspond to certain band and bust measurements. They organize bust and band measurements into a comprehensive chart that matches these measurements with bra cup letters and band sizes.
Bra Size Calculators
Bra size calculators are another valuable tool that can help you determine your ideal bra size based on your at-home measurements. These calculators allow you to enter your bust measurement and band measurement separately and assign you a bra size according to your entries.
Bra Size Calculator US vs. Bra Size Calculator UK
Bra size calculators are an especially helpful resource when it comes to calculating your bra size in a sizing system that is unfamiliar to you. The US and UK bra sizing systems have subtle but significant differences between them.
