Measure your chest (we know this seems odd, but it works!). Place the measuring tape around your back and under your armpits. Check in the mirror to ensure the measuring tape is parallel to the floor along your back as well as along your breasts. The measuring tape should be placed above your breast tissue. The tape should be snug around your body and make sure that you don’t have any fingers underneath the tape. If you are in between sizes, round up or down to the nearest even number. This will be your rib band size (34, 36 etc.).
Measure around the fullest part of your breasts, over your nipple area. This is a looser measurement than the rib band measurement. Hold the end of the measuring tape at the side of your breast. While holding both ends of the tape with one hand, use your free hand to press the measuring tape in between your breasts to your chest. This will provide a more accurate cup size measurement.
Subtract the rib band measurement from the cup size measurement. Each number or inch represents one letter. For example, if your rib band is 34 and your cup measurement is 38; 38-34 = 4, 4 equates to a D (2=B, 3=C, 4=D, 5=DD(E), 6=DDD(F)…). You are a D cup. Your nursing bra size is a 34D.
Finding your nursing bra size is easy! Once you’ve taken your measurements, enter the numbers below to find out your bra size.
*Results cannot be guaranteed as conclusive. Actual size may differ based on stage of pregnancy, pre-pregnancy size and personal preference.