What is the difference between 34A and 32B
In clothing sizing, underwear sizing or other related fields, 34A and 32B are two common size designations. Many people are confused by the difference, especially when choosing underwear or tops. This article will analyze the difference between these two sizes in detail and help readers better understand through structured data.
1. Basic meaning of size

34A and 32B are commonly used to indicate underwear sizes, especially bra sizes. These two sizes are made up of two parts: the number part (such as 34 or 32) represents the underbust size, and the letter part (such as A or B) represents the cup size. The following are the specific differences between the two:
| Size | Underbust (inches) | cup size |
|---|---|---|
| 34A | 34 | A |
| 32B | 32 | B |
2. Differences in underbust circumference
Underbust circumference is the measurement below the breasts, usually measured in inches. A 34A has an underbust measurement of 34 inches, while a 32B has an underbust measurement of 32 inches. This means that a 34A bust is 2 inches larger than a 32B bust. The size of the underbust directly affects the tightness and comfort of the bra.
| Size | Underbust (inches) | Suitable bust range |
|---|---|---|
| 34A | 34 | 34-36 |
| 32B | 32 | 32-34 |
3. Differences in cup sizes
Cup sizes are represented by letters, and the difference between an A cup and a B cup is the height of the breast rise. A cup has a smaller bulge, while a B cup has a larger bulge. Although 34A and 32B have different underbust measurements, their actual breast volumes are likely to be similar. This is because cup size is calculated relative to underbust circumference.
| Size | cup size | Breast lift height (inches) |
|---|---|---|
| 34A | A | 1 |
| 32B | B | 2 |
4. The difference in actual wearing effect
Actual fit of 34A and 32B will vary depending on individual body shape. 34A is suitable for women with a larger underbust but a smaller breast bulge, while 32B is suitable for women with a smaller underbust but a larger bulge. The following are the wearing characteristics of the two:
| Size | Suitable body type | Wearing effect |
|---|---|---|
| 34A | The lower bust is larger and the chest is flatter | Provide basic support and high comfort |
| 32B | Smaller underbust, fuller breasts | Provide better support and highlight curves |
5. How to choose the size that suits you
When choosing a bra size, it is recommended to measure your underbust and upperbust (the circumference at the fullest part of your breasts), and then determine the cup size based on the difference. Here are simple measurements:
| steps | Measurement method |
|---|---|
| 1 | Use a soft tape to measure your lower bust (closely under your breasts) |
| 2 | Use a soft tape to measure the upper chest circumference (take the average value from three angles: upright, 45 degrees, and 90 degrees) |
| 3 | Calculate the difference: upper bust - lower bust |
| 4 | Choose a cup based on the difference: 1 inch is A, 2 inches is B, and so on. |
6. Summary
The main difference between 34A and 32B is the underbust and cup size. 34A has a larger underbust and a smaller cup; 32B has a smaller underbust and a larger cup. When choosing a size, you should base your decision on your personal body shape and measurements to ensure comfort and support.
I hope that through the detailed analysis and structured data of this article, you can understand the difference between 34A and 32B more clearly and make a more informed choice when buying underwear.
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