Bra Size Calculator

This Bra Size Calculator helps the user find their ideal bra size by inputting their under bust and full bust measurements, along with their current bra fit preference, and provides results including band size, cup size, and sister sizes.

Use Our Bra Size Calculator

How to Use the Bra Size Calculator

This guide provides a step-by-step explanation of how to use the Bra Size Calculator. Follow the steps below to accurately determine your bra size.

Step 1: Take Measurements

  1. Under Bust Measurement:

    • Use a measuring tape to measure your under bust area. Make sure the tape is parallel to the ground, snug but not tight.
    • Round the measurement to the nearest 0.5 inch.
    • Enter your under bust measurement in inches into the ‘Under Bust Measurement’ field of the calculator. Ensure it is between 20 and 60 inches.
  2. Full Bust Measurement:

    • Measure the fullest part of your bust, again keeping the tape parallel to the ground and not too tight or too loose.
    • Round this measurement to the nearest 0.5 inch.
    • Enter the full bust measurement into the ‘Full Bust Measurement’ field. Ensure it is between 20 and 70 inches.

Step 2: Provide Fit Feedback

  • Select your current bra fit from the provided options: ‘Band feels loose’, ‘Band feels perfect’, or ‘Band feels tight’. This information helps tailor the band size to your preferences.

Step 3: View Your Results

  • Once all input fields are filled, the calculator will display the following results:
  • Band Size: The appropriate band size will be calculated based on your under bust measurement and feedback about your current bra fit.
  • Cup Size Difference: Displays the difference between full bust measurement and band size, crucial for determining the cup size.
  • Cup Size: Derived from the cup size difference, the calculator will determine the best-suited cup size (ranging from AA to K+).
  • Your Bra Size: Combines your band size and cup size to present your complete bra size.
  • Sister Sizes: Offers alternative bra sizes with slightly different band and cup combinations for comfort and fit adjustments. These include:
    • Sister Size (Band Up): Suggests a larger band size with a corresponding smaller cup.
    • Sister Size (Band Down): A smaller band size with a larger cup, offering another fit option.

Use this guide to ensure that you input the correct measurements and make the necessary selections. By doing so, you can trust the output provided by the calculator to help you find a comfortable and well-fitting bra.