Measure Your Band Size (Underbust Measurement).
To start, take a soft measuring tape and wrap it around your ribcage, just under your bust.
Keep the tape straight, snug, and level. Do not pull it too tight, just comfortable enough to stay in place.
Whatever number you get, round it to the nearest whole number. This is your band size and it plays the biggest role in support and everyday comfort.
Measure Your Bust Size (Fullest Part of the Chest).
Next, measure around the fullest part of your bust.
Keep the tape relaxed but straight — not loose and not tight.
This measurement will help you determine your cup size.
Calculate Your Cup Size.
To find your cup size, simply subtract your band size from your bust size.
Each inch of difference usually represents one cup letter.
This basic formula makes it very easy to measure bra size at home without any tools other than a tape.
Compare with a Bra Size Chart
Once you have your band and cup numbers, check them with a standard bra size chart.
This will help you confirm the most accurate size for your body.
Different brands may vary slightly, but your measurement will always guide you in the right direction.
Check the Fit for Everyday Comfort
After finding your size, try a bra and check these simple points:
-
The band should stay level on your back.
-
The cups should sit smoothly without gaps or bulging.
-
The straps should feel supportive but not dig into your shoulders.
A well-fitted everyday bra feels light, supportive, and comfortable from morning to night.
Final Tip for Long-Term Comfort
Re-measure your bra size every few months. Body shape changes with time, and updating your size helps you stay comfortable daily.
Choosing the right size using this simple bra measurement guide makes a clear difference in how you feel and how your clothes fit.
Tip