How to Measure Your Bra Size
Get accurate measurements in just 2 minutes. All you need is a soft measuring tape and our step-by-step guide.
What You'll Need
- Soft measuring tape - The flexible kind used for sewing (not a metal tape measure)
- Unpadded bra or no bra - Padded bras can add inches and throw off your measurement
- A mirror - Helps ensure the tape is level
Interactive Measurement Tool
This takes about 2 minutes
Let's Find Your Perfect Fit
Accurate measurements are the foundation of a great-fitting bra. We'll guide you through each step.
Step-by-Step Instructions
Measure Your Band Size
Wrap the measuring tape snugly around your ribcage, directly under your bust. The tape should be level and parallel to the floor all the way around.
Tips for accuracy:
- • Keep your arms relaxed at your sides
- • Make sure the tape is snug but not tight
- • Round to the nearest even number (31" becomes 30" or 32")
Measure Your Bust Size
Wrap the tape loosely around the fullest part of your bust. Don't pull the tape tight - let it rest gently against your skin.
Tips for accuracy:
- • Stand up straight with good posture
- • Keep the tape level all the way around
- • Don't compress your bust - keep it loose
Calculate Your Cup Size
Subtract your band measurement from your bust measurement. The difference tells you your cup size.
Cup size chart:
Important Notes
Your calculated size is a starting point
- • Sizes vary significantly between brands
- • Your shape affects fit as much as size
- • Bodies change - remeasure every 6-12 months
- • Consider sister sizes if the band feels too tight or loose
Related Guides
Frequently Asked Questions
How often should I measure my bra size?
You should re-measure every 6 to 12 months, or after any significant body change such as weight loss or gain, pregnancy, breastfeeding, or hormonal changes. Many women find their size changes more often than they expect.
Should I measure with or without a bra on?
Measure wearing a thin, non-padded bra or no bra at all. Padded or push-up bras will add extra volume and give inaccurate measurements. A thin t-shirt bra or bralette is acceptable if you prefer not to measure without one.
What if my band measurement is an odd number?
Round to the nearest even number. If you are between two even numbers, try both sizes. If you prefer a snugger fit, round down. If you prefer more room, round up. Most bra bands are only available in even numbers (30, 32, 34, etc.).
Why is my measured size different from what I usually wear?
Studies show that up to 80% of women wear the wrong bra size. Common reasons include wearing a band too loose and a cup too small, sizing changes over time that went unnoticed, or brand-to-brand size variation. Trust the tape measure over habit.
Can I measure myself or do I need someone to help?
You can absolutely measure yourself. Stand in front of a mirror to make sure the tape is level. For the bust measurement, lean forward slightly to capture your full volume. If you find it difficult to keep the tape level, asking someone to help can improve accuracy.
Get Personalized Recommendations
Now that you know your size, let our AI find bras that fit YOUR shape and preferences.