.bra-fit-calculator-container {
font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
max-width: 600px;
margin: 20px auto;
padding: 25px;
border: 1px solid #e0e0e0;
border-radius: 10px;
background-color: #f9f9f9;
box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}
.bra-fit-calculator-container h2 {
color: #333;
text-align: center;
margin-bottom: 25px;
font-size: 1.8em;
}
.bra-fit-calculator-container .input-group {
margin-bottom: 18px;
display: flex;
flex-direction: column;
}
.bra-fit-calculator-container label {
display: block;
margin-bottom: 8px;
color: #555;
font-weight: bold;
font-size: 1em;
}
.bra-fit-calculator-container input[type="number"],
.bra-fit-calculator-container select {
width: calc(100% – 22px);
padding: 12px;
border: 1px solid #ccc;
border-radius: 6px;
font-size: 1em;
box-sizing: border-box;
transition: border-color 0.3s ease;
}
.bra-fit-calculator-container input[type="number"]:focus,
.bra-fit-calculator-container select:focus {
border-color: #007bff;
outline: none;
box-shadow: 0 0 5px rgba(0, 123, 255, 0.3);
}
.bra-fit-calculator-container button {
background-color: #007bff;
color: white;
padding: 14px 25px;
border: none;
border-radius: 6px;
cursor: pointer;
font-size: 1.1em;
font-weight: bold;
width: 100%;
transition: background-color 0.3s ease, transform 0.2s ease;
margin-top: 20px;
}
.bra-fit-calculator-container button:hover {
background-color: #0056b3;
transform: translateY(-2px);
}
.bra-fit-calculator-container #braFitResult {
margin-top: 30px;
padding: 18px;
border: 1px solid #d4edda;
background-color: #e9f7ef;
border-radius: 8px;
text-align: center;
font-size: 1.2em;
color: #155724;
font-weight: bold;
min-height: 50px;
display: flex;
align-items: center;
justify-content: center;
}
.bra-fit-calculator-container #braFitResult.error {
border-color: #f5c6cb;
background-color: #f8d7da;
color: #721c24;
}
.bra-fit-calculator-container .unit-selector {
display: flex;
align-items: center;
margin-top: 10px;
}
.bra-fit-calculator-container .unit-selector label {
margin-right: 10px;
margin-bottom: 0;
font-weight: normal;
}
.bra-fit-calculator-container .unit-selector select {
width: auto;
padding: 8px;
}
Bra Size Calculator
Inches
Centimeters
Enter your measurements above to find your estimated bra size.
function calculateBraSize() {
var underbustRaw = parseFloat(document.getElementById("underbustMeasurement").value);
var bustRaw = parseFloat(document.getElementById("bustMeasurement").value);
var unit = document.getElementById("measurementUnit").value;
var resultDiv = document.getElementById("braFitResult");
resultDiv.classList.remove('error');
if (isNaN(underbustRaw) || isNaN(bustRaw) || underbustRaw <= 0 || bustRaw <= 0) {
resultDiv.innerHTML = "Please enter valid positive numbers for both measurements.";
resultDiv.classList.add('error');
return;
}
if (bustRaw < underbustRaw) {
resultDiv.innerHTML = "Your bust measurement cannot be smaller than your underbust measurement. Please re-check your inputs.";
resultDiv.classList.add('error');
return;
}
var underbustInches;
var bustInches;
if (unit === 'cm') {
underbustInches = underbustRaw / 2.54;
bustInches = bustRaw / 2.54;
} else {
underbustInches = underbustRaw;
bustInches = bustRaw;
}
// Calculate Band Size (US/UK method: round underbust to nearest even number)
var bandSize = Math.round(underbustInches);
if (bandSize % 2 !== 0) {
bandSize++; // Ensure it's an even number
}
// Common minimum and maximum band sizes
if (bandSize 50) { bandSize = 50; }
// Calculate Cup Difference
var cupDifference = bustInches – bandSize;
// Determine Cup Letter based on difference in inches
var cupLetters = ["AA", "A", "B", "C", "D", "DD", "DDD/F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P"];
var cupIndex = Math.round(cupDifference); // Each inch difference corresponds to a cup size
if (cupIndex = cupLetters.length) {
cupIndex = cupLetters.length – 1; // Cap at the largest defined cup letter
}
var cupSize = cupLetters[cupIndex];
resultDiv.innerHTML = "Your estimated bra size is: " + bandSize + cupSize + "";
resultDiv.classList.remove('error');
}
Finding Your Perfect Fit: A Guide to Bra Sizing
A well-fitting bra is more than just a piece of clothing; it's a foundation for comfort, confidence, and proper support. Unfortunately, studies show that a significant majority of women wear the wrong bra size, leading to discomfort, poor posture, and even health issues. Our Bra Size Calculator is designed to help you take the first step towards finding your ideal fit.
Why a Good Bra Fit Matters
- Comfort: An ill-fitting bra can dig into your shoulders, ride up your back, or cause breast tissue to spill out, leading to constant discomfort throughout the day.
- Support: Proper support reduces strain on your back and shoulders, preventing pain and improving posture. It also helps maintain the shape and health of your breast tissue over time.
- Appearance: A well-fitting bra creates a smoother silhouette under clothing, enhancing your overall look and making your outfits fit better.
- Confidence: When you feel comfortable and supported, it naturally boosts your confidence.
Common Signs of an Ill-Fitting Bra
Before you even measure, check for these tell-tale signs:
- Band rides up: If the back band is higher than the front, it's likely too loose. The band should be firm and level all around.
- Straps dig in: Straps should provide minimal support (about 10-20%); most support comes from the band. If they're digging, your band is too loose.
- Cups gape or overflow: Gaping cups mean they're too big; overflowing (spillage) means they're too small.
- Center gore doesn't lie flat: The piece of fabric between the cups (the gore) should lie flat against your sternum. If it floats away, the cups are too small or the band is too tight.
- Underwire digs or pokes: The underwire should encircle your breast tissue without digging into your armpit or breast.
How to Measure for Your Bra Size
Accurate measurements are crucial for using our calculator effectively. You'll need a soft measuring tape and ideally, a non-padded bra that fits reasonably well (or no bra at all).
-
Snug Underbust Measurement (for Band Size):
- Stand upright and exhale fully.
- Wrap the measuring tape snugly around your rib cage, directly under your bust. Ensure the tape is level all the way around.
- Note this measurement. This is your underbust measurement.
-
Fullest Bust Measurement (for Cup Size):
- Wrap the measuring tape loosely around the fullest part of your bust (usually over your nipples).
- Make sure the tape is level and not too tight or too loose.
- Note this measurement. This is your bust measurement.
How Our Calculator Works
Our Bra Size Calculator uses a common method to estimate your bra size based on your two key measurements:
- Band Size: Your snug underbust measurement is rounded to the nearest even number (in inches) to determine your band size (e.g., 30, 32, 34).
- Cup Size: The difference between your fullest bust measurement and your calculated band size (both in inches) determines your cup letter. Each inch of difference typically corresponds to one cup size (e.g., 1 inch = A cup, 2 inches = B cup, and so on).
Important Considerations
While this calculator provides a great starting point, remember that bra sizing is not an exact science. Factors like breast shape, brand variations, and personal preference can influence the perfect fit. Always use this calculated size as a guide and be prepared to try on different sizes and styles. Many women find that their ideal size can vary slightly between brands.
Happy fitting!