Bra Size Calculator & Converter - Find Your Perfect Fit

Bra Size Calculator & Converter

Find your perfect fit or convert sizes instantly.

Convert International Sizes

How to Measure

For the best fit, measure without a bra or with a non-padded, non-wired bra. Keep the measuring tape parallel to the floor.

1. Underbust (Band Size)

Wrap the tape measure snugly around your ribcage, right under your bust. Exhale to get the smallest measurement.

2. Bust (Cup Size)

Wrap the tape measure loosely around the fullest part of your bust. Don't pull too tight.

Bust Underbust

🧍‍♀️ How to Measure Your Bra Size at Home: Step-by-Step Guide

Finding the right bra size is easier than you think. All you need is a soft measuring tape and a few minutes. Follow these two simple steps for an accurate measurement:

  1. Measure Your Band Size: Stand straight and wear a non-padded bra. Wrap the measuring tape snugly around your ribcage, directly under your bust. Make sure the tape is level all the way around. Exhale completely to get the smallest possible measurement. Round it to the nearest whole number. This is your underbust measurement.
  2. Measure Your Bust Size: Wrap the tape measure somewhat loosely around the fullest part of your bust. Ensure the tape is straight across your back and not too tight. Round this measurement to the nearest whole number. This is your bust measurement.

Once you have these two measurements, enter them into our calculator above to find your estimated bra size. Remember, this is a starting point, as sizes can vary between different brands and styles.

âť“ Why Wearing the Right Bra Size Matters

Many studies show that a large percentage of women wear the wrong bra size. An ill-fitting bra isn't just uncomfortable; it can lead to various health issues like back pain, neck and shoulder tension, poor posture, and skin irritation. A well-fitting bra provides essential support, enhances your posture, and boosts your confidence. It ensures your breast tissue is properly supported, reducing strain on your back and shoulders and allowing you to move comfortably throughout your day.

🛍️ Bra Size Chart with Cup and Band Measurements Explained

Understanding bra sizing can be confusing. Here’s a breakdown of how band and cup sizes work together to determine your overall bra size. Use these charts as a reference after finding your measurements.

Cup Size Chart

Your cup size is determined by the difference between your bust measurement and your band measurement. Each inch of difference corresponds to a cup letter.

Difference (Bust - Band)Cup Size
Less than 1 inchAA
1 inchA
2 inchesB
3 inchesC
4 inchesD
5 inchesDD (E)
6 inchesDDD (F)

đź’ˇ Common Bra Fitting Mistakes and How to Avoid Them

  • The Band Rides Up: This is a sign that your band is too loose. The band should be snug and sit horizontally across your back. Try going down a band size.
  • Cups Gaping: If there's space between your breasts and the cups, your cup size may be too big. Try a smaller cup size.
  • Spillage: If you're spilling out of the top or sides of the cups, the cup size is likely too small. Try going up a cup size.
  • Straps Digging In: Your bra straps shouldn't do all the work. Most of the support (about 80%) should come from the band. If your straps are digging in, it might be because your band is too loose.
  • Using the Tightest Hook from the Start: When buying a new bra, it should fit perfectly on the loosest hook. This allows you to tighten it as the bra naturally stretches over time.

Frequently Asked Questions (FAQ)

How often should I measure my bra size?

It's a good idea to measure your bra size every 6 to 12 months. Your body can change due to factors like weight fluctuations, pregnancy, or hormonal shifts, which can affect your bra size.

What is a sister size?

Sister sizes are alternate bra sizes where the cup volume stays the same, even though the band and cup letter change. For example, if a 34C is too loose in the band, you could try its sister size, 32D. Our calculator suggests sister sizes to give you more options when shopping.

Does this calculator work for Indian bra sizes?

Yes, our calculator can provide a great starting point for finding your size with Indian brands. Most Indian brands follow UK/US sizing standards. However, sizing can still vary from brand to brand, so always treat the result as an estimate and check the brand's specific size chart if available.

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