Bra Size Calculator


Bra Size Calculator Guide

Finding the right bra size is important for comfort, support, posture, and confidence. At ShopbopOnline.pk, we want every woman to find the perfect fit with ease.

Use the simple guide below to calculate your bra size accurately at home.


Step 1: Measure Your Band Size

Wrap a measuring tape firmly around your ribcage, directly under your bust.

Make sure:

  • The tape is straight and level
  • It fits snugly but not too tight
  • Measurements are taken in inches

Band Size Chart

Under Bust Measurement Band Size
26–27 inches 32
28–29 inches 34
30–31 inches 36
32–33 inches 38
34–35 inches 40
36–37 inches 42
38–39 inches 44

Step 2: Measure Your Bust Size

Measure around the fullest part of your bust while wearing a non-padded bra.

Keep the measuring tape:

  • Relaxed, not tight
  • Parallel to the ground
  • Comfortable around the chest

Step 3: Calculate Your Cup Size

Subtract your band measurement from your bust measurement.

Cup Size Guide

Difference (Bust - Band) Cup Size
1 inch A Cup
2 inches B Cup
3 inches C Cup
4 inches D Cup
5 inches DD/E Cup
6 inches F Cup

Example Calculation

If:

  • Under bust = 30 inches
  • Bust size = 33 inches

Difference = 3 inches

Your estimated bra size would be:

36C


Bra Fit Tips

A properly fitted bra should:

  • Sit straight across the back
  • Feel snug without discomfort
  • Keep straps comfortably secure
  • Fully support the bust without gaps or overflow

Signs your bra size may be incorrect:

  • Shoulder pain from straps
  • Back band riding up
  • Cups digging into skin
  • Breast spillage or loose cups

Sister Sizes Guide

Sometimes trying a sister size gives a better fit.

Current Size Sister Size Down Sister Size Up
34B 32C 36A
36C 34D 38B
38D 36DD 40C

Need Help Choosing the Right Size?

At ShopbopOnline.pk, our support team can help you choose the correct bra size, shapewear fit, and comfortable innerwear based on your body type and preferences.

You can contact us through:

  • WhatsApp Support
  • Social Media Pages
  • Website Contact Form