Step 1: Under bust measurement
First, assess your under bust measurement by measuring directly underneath your bust.
Step 2:
Bust measurement
Next, establish your bust measurement by measuring across your breasts at their fullest point.
Step 3: Band size
Determine your band size. Take your under bust measurement from Step 1 and add 4" to an even measurement or 5" to an odd measurement. For example, if you measure 27", your under bust measurement is 32".
Step 4: Cup size
Finally, calculate your cup size, which is your bust measurement minus your under bust measurement. If the difference is 1", you are an A cup; if the difference is 2", you are a B cup; and if the difference is 3", you are a C cup. For example, if your bust measurement is 34" and your under bust measurement is 31", you should wear a C cup.
If the difference is:
less than 1 inch = AA cup
1 inch = A cup
2 inches = B cup
less than 1 inch = AA cup
1 inch = A cup
2 inches = B cup
3 inches = C cup
4 inches = D cup
5 inches = DD cup
Please enter measurements from steps 1 and 2. The calculator will do the math.
