Bra Size Calculator: Find Your Perfect Fit
Our comprehensive bra size calculator helps you find your ideal bra size with international sizing standards including US, UK, EU, Japan, India, and Pakistan. Get accurate measurements in both inches and centimeters for the perfect fit every time!
Struggling to find your correct bra size? You're not alone. Over 80% of women wear the wrong bra size. Our calculator provides precise sizing across multiple international standards, from band size to cup size, ensuring proper support and comfort.
How to Measure for the Perfect Fit
Step 1: Measure Your Band Size
Wrap the measuring tape snugly around your ribcage, just beneath your breasts. The tape should be parallel to the ground. Breathe normally and don't pull the tape too tight. Round to the nearest whole number.
Step 2: Measure Your Bust Size
Wrap the measuring tape around your back and across the fullest part of your bust. The tape should be parallel to the ground. Don't pull the tape too tight - it should just touch your body comfortably. Round to the nearest whole number.
Tips for Accurate Measurements
- Use a soft measuring tape, not a metal one
- Keep the tape parallel to the ground
- Don't pull the tape too tight
- Take multiple measurements to ensure accuracy
- Have someone help you if possible
Calculate Your Bra Size
International Bra Size Chart
Note: This is a general guide. Different manufacturers may use slightly different measurements. For the most accurate results, use our calculator above.
How to Tell if Your Bra Fits Properly
The Band
- Should sit parallel to the floor
- Should be snug but not dig into your skin
- You should be able to fit two fingers under the band
- When you raise your arms, the band should stay in place
The Cups
- Should fully enclose your breast tissue
- No spillage over the tops or sides
- No gapping or wrinkling of fabric
- The underwire should sit flat against your ribcage
Breast Shape Types
Understanding your breast shape can help you find the right bra styles for your body.
Common Signs of a Poor Fit
Band Too Loose:
- Rides up in the back
- Lack of support
- Straps digging in to compensate
Band Too Tight:
- Creates bulges
- Hard to breathe or move comfortably
- Leaves deep red marks
Cups Too Small:
- Breast tissue spills over the top
- Underwire sits on breast tissue
- Center panel doesn't lay flat
Cups Too Large:
- Wrinkling or gapping of cup fabric
- Cups don't hold shape
- Lack of definition
Bra Fitting Dos and Don'ts
Do:
- Get professionally measured occasionally
- Try on bras before purchasing when possible
- Replace bras when they lose elasticity
- Wash bras by hand when possible
- Hook bras before washing to prevent snagging
- Have a variety of bras for different outfits
- Adjust the straps for each wear
Don't:
- Wear the same bra two days in a row
- Put bras in the dryer
- Store bras with cups folded into each other
- Wear a bra that causes discomfort
- Keep wearing a bra past its lifespan (typically 6-9 months)
- Ignore changes in your body that may affect fit
- Assume you'll always be the same size
Frequently Asked Questions
How often should I measure my bra size?
You should measure your bra size at least once a year, and more frequently if you experience weight changes, pregnancy, hormonal changes, or start a new exercise routine. Your body changes naturally over time, and your bra size may change with it.
Why do I get different sizes in different brands?
Brands often use slightly different sizing standards, and cuts and styles can also affect fit. It's similar to how you might wear different sizes in different clothing brands. Use our calculator as a starting point, but be prepared to adjust up or down depending on the specific brand and style.
What if I'm between sizes?
If you're between band sizes, try the smaller band size with a larger cup, or the larger band size with a smaller cup. For example, if you're between a 34C and a 36B, try both to see which feels more comfortable. Remember that the band provides most of the support, so it should be snug but not painful.
How do I know when it's time to replace my bra?
It's time to replace your bra when the band becomes loose even on the tightest hook, the straps no longer stay up when fully adjusted, the underwire pokes out or becomes uncomfortable, or the cups lose their shape. Most bras, with proper care, last about 6-9 months with regular wear.
Can I wear the same bra size for all styles?
Different bra styles may require different sizes. For instance, you might need a different size in a sports bra compared to a plunge bra or a strapless bra. The cut, material, and purpose of the bra can all affect how it fits. Always try on new styles to ensure proper fit.