How to Measure Your Bra Size

How to Measure Your Bra Size at Home

8 out of 10 women wear the wrong bra size. Here's how to find yours — all you need is a soft measuring tape and a mirror.

Step 1: Band Size

Wrap the measuring tape directly under your bust, snug but not tight. Round to the nearest whole number. If it's even, add 4 inches. If it's odd, add 5. That's your band size.

Step 2: Bust Size

Measure around the fullest part of your bust (usually at nipple level). Keep the tape parallel to the floor — don't pull too tight. Round to the nearest whole number.

Step 3: Cup Size

Subtract your band measurement from your bust measurement. Each inch difference = one cup size:

• 1" = A cup
• 2" = B cup
• 3" = C cup
• 4" = D cup
• 5" = DD cup
• 6" = DDD / F cup

Quick Check: Does It Fit?

• The band should sit horizontally and stay in place without digging in.
• The center gore (the piece between the cups) should lie flat against your sternum.
• Your breasts should not spill out over the top or sides of the cups.
• Straps should stay put without digging into your shoulders.

Pro Tip

Measure yourself every 6 months. Weight fluctuations, hormonal changes, and even age can change your size.