34F Bras

All About 34F Bras: Equivalents Bra Cup Sizes and where to Shop

34F Bras Cup Size
A Comprehensive Guide to 34F Bras and Cup Sizes


Finding the perfect bra size is not only essential for comfort and support but also for enhancing confidence and overall well-being. Among the various sizes available, the 34F bra size often raises questions due to its unique combination of band and cup dimensions. In this detailed blog post, we'll delve into the intricacies of 34F bras and cup sizes, covering equivalent cup sizes, sister sizes, measurements in cm vs. inches, and how to accurately measure both the band and cup size. Additionally, we'll provide an international size chart for 34F bras, including sizes from up to 6 to 8 major countries.

Understanding 34F Cup Sizes

The cup size of a bra refers to the volume of the breast the bra can comfortably accommodate. Cup sizes are denoted by letters, and they typically range from A to K and beyond in some sizing systems. As the letters progress from A to K, the cup volume increases accordingly. In the case of a 34F bra, the letter "F" indicates a larger cup volume compared to smaller cup sizes like A, B, or C.

34F Equivalent Cup Sizes

When shopping for bras, it's important to remember that cup sizes are not standardized across all countries and brands, leading to confusion for many individuals. However, there are equivalent cup sizes that can provide a rough estimate of the cup volume. For instance, if you wear a 34F bra, you might find a suitable fit in bras with the following equivalent cup sizes:

  • 30G (sister size with a smaller band)
  • 32E (sister size with a smaller band)
  • 36E (sister size with a larger band)
  • 38DD (sister size with a larger band)

Understanding sister sizes can be particularly helpful when your exact bra size is not available, allowing you to explore alternative sizes with the same cup volume and different band sizes.

34F Sister Sizes

Sister sizes are bras that have the same cup volume but different band sizes. This means that if your usual bra size is not available, you can try a sister size to find a suitable fit. When you go down a band size, you need to go up a cup size to maintain the same cup volume, and vice versa. For example, if a 34F bra feels a bit tight around the band, you can try a sister size of 36E, which will have a slightly looser band but the same cup volume.

Understanding sister sizes can be particularly helpful when your exact bra size is not available, allowing you to explore alternative sizes with the same cup volume and different band sizes.

Measuring 34F Bras: Band and Cup Size

Accurate measurements are vital to finding the perfect 34F bra that offers the right balance of support and comfort. Here's a step-by-step guide on how to measure your band and cup size correctly:

Band Size:

  1. Start by wearing a non-padded, properly fitting bra. A soft bra will provide more accurate measurements than a push-up or padded bra.
  2. Stand in front of a mirror and use a measuring tape to measure around your ribcage, just under your bust. Ensure that the tape is snug but not too tight, and it should be parallel to the ground.
  3. Round the measurement to the nearest whole number.
  4. If the rounded measurement is an even number, add 4 inches (or approximately 10 centimeters) to determine your band size. If the rounded measurement is an odd number, add 5 inches (or approximately 12.5 centimeters) to find your band size.

Cup Size:

  1. While still wearing the same bra, measure around the fullest part of your bust, ensuring that the measuring tape is parallel to the ground.
  2. Round this measurement to the nearest whole number.
  3. Subtract your band measurement (obtained in the previous step) from your bust measurement. The difference will determine your cup size.
  4. Each inch (or approximately 2.5 centimeters) difference between the band and bust measurements corresponds to one cup size. For example, if your band measurement is 34 inches and your bust measurement is 40 inches, the difference is 6 inches, making your cup size 34F.

Sizes in cm vs. Inches

Bra sizes are often available in both centimeters and inches, particularly when considering international markets. Converting between the two is straightforward:

1 inch ≈ 2.54 cm

When shopping for bras, especially in international stores or online retailers, you may encounter size charts using either inches or centimeters. Understanding the conversion between the two units can help ensure you choose the correct size that aligns with your measurements.

International Size Chart for 34F Bras

Country Band Size Equivalent Cup Sizes Sister Sizes
United States/Canada 34 F 32G, 36E
United Kingdom 34 E 32F, 36DD
Europe (EU) 75 G 70H, 80F
Australia/New Zealand 12 F 10G, 14E
Japan 75 G 70H, 80F
France/Belgium/Spain 90 F 85G, 95E
Germany/Austria/Switzerland 75 G 70H, 80F
Italy 3 G 2H, 4F

Commonly Asked Questions about 34F Bras and Related Sizes

  1. What does the "F" cup size mean in a 34F bra?
    The letter "F" in a 34F bra indicates the cup volume. It represents a larger cup size than letters closer to the beginning of the alphabet, such as A, B, or C. In this case, "F" corresponds to a significant cup volume that can accommodate ample breast tissue.
  2. What size is a 34F bra?
    A 34F bra comprises a band size of 34 inches and an "F" cup volume. The combination of the band and cup measurements provides the perfect fit for individuals with a bust measurement that is approximately 6 inches larger than their underbust measurement.
  3. Is 34DDD the same as 34F?
    No, 34DDD is not the same as 34F. While both sizes may indicate a larger cup volume, they have different measurements. A 34DDD bra typically has a band size of 34 inches with three D-cup sizes, while a 34F bra has a band size of 34 inches with one F-cup size.
  4. What is 34 bust size?
    A 34 bust size typically refers to a bust measurement of 34 inches. In terms of bra sizing, a 34 bust size would generally align with a 34 band size, and the cup size would be determined by the difference between the band and bust measurements.
  5. What bra size is equivalent to 34FF?
    A 34FF bra has a band size of 34 inches with an "FF" cup volume. Equivalent cup sizes to 34FF include 30H (sister size with a smaller band), 32G (sister size with a smaller band), 36F (sister size with a larger band), and 38E (sister size with a larger band).

Shop for 34F Bras

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Finding the right bra size, especially when it comes to 34F bras, is a journey that requires patience and understanding of various factors such as cup sizes, sister sizes, and international sizing differences. By accurately measuring both the band and cup size, understanding equivalent sizes, and considering the international size chart, you can confidently explore a wide range of bras to find the perfect fit that complements your unique body shape and size.

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