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Bra Size Calculator Guide: Find Your Perfect Fit

March 18, 20246 min readMeasurement Guide

Table of Contents

Introduction

Our bra size calculator is designed to provide accurate measurements and help you find your perfect fit. This guide walks you through the process step by step.

Preparation

Before using the calculator, you'll need:

  • A soft measuring tape
  • A mirror (optional but helpful)
  • A well-fitting, non-padded bra
  • About 5–10 minutes of your time

Measurement Steps

1. Band Size Measurement

Measure your underbust (directly under your breasts) while wearing a non-padded bra. The tape should be snug but not tight, and parallel to the floor.

2. Bust Measurement

Measure around the fullest part of your bust, keeping the tape parallel to the floor. Don't pull the tape too tight or let it sag.

Using the Calculator

Follow these steps to use our calculator:

  1. Enter your band measurement (inches or centimeters)
  2. Enter your bust measurement (inches or centimeters)
  3. Select your preferred size system (US, UK, or EU)
  4. Click Calculate to view your results

Understanding Your Results

The calculator will provide you with:

  • Your band size
  • Your cup size
  • Your complete bra size
  • Equivalent sizes in other systems (if applicable)

Professional Tips

Expert Advice

  • Measure every 6–12 months or after significant weight changes
  • Take measurements in the morning for consistency
  • If your measurements fall between sizes, round to the nearest whole number
  • Different brands may fit differently even at the same size