Dress Size Calculator
Enter your bust, waist, and hip measurements, then select your region to find your estimated dress size.
.calculator-container {
font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
background-color: #f9f9f9;
padding: 25px;
border-radius: 10px;
box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
max-width: 500px;
margin: 30px auto;
border: 1px solid #e0e0e0;
}
.calculator-container h2 {
color: #333;
text-align: center;
margin-bottom: 20px;
font-size: 1.8em;
}
.calculator-container p {
color: #555;
text-align: center;
margin-bottom: 25px;
line-height: 1.6;
}
.calculator-form .form-group {
margin-bottom: 18px;
}
.calculator-form label {
display: block;
margin-bottom: 8px;
color: #444;
font-weight: bold;
font-size: 0.95em;
}
.calculator-form input[type="number"],
.calculator-form 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;
}
.calculator-form input[type="number"]:focus,
.calculator-form select:focus {
border-color: #007bff;
outline: none;
box-shadow: 0 0 5px rgba(0, 123, 255, 0.2);
}
.calculate-button {
display: block;
width: 100%;
padding: 14px;
background-color: #007bff;
color: white;
border: none;
border-radius: 6px;
font-size: 1.1em;
font-weight: bold;
cursor: pointer;
transition: background-color 0.3s ease, transform 0.2s ease;
margin-top: 25px;
}
.calculate-button:hover {
background-color: #0056b3;
transform: translateY(-1px);
}
.calculate-button:active {
background-color: #004085;
transform: translateY(0);
}
.calculator-result {
margin-top: 30px;
padding: 20px;
background-color: #e9f7ff;
border: 1px solid #cce5ff;
border-radius: 8px;
text-align: center;
font-size: 1.15em;
color: #0056b3;
font-weight: bold;
min-height: 50px;
display: flex;
align-items: center;
justify-content: center;
word-wrap: break-word;
}
.calculator-result strong {
color: #004085;
}
function calculateDressSize() {
var bust = parseFloat(document.getElementById('bustMeasurement').value);
var waist = parseFloat(document.getElementById('waistMeasurement').value);
var hips = parseFloat(document.getElementById('hipMeasurement').value);
var region = document.getElementById('sizingRegion').value;
var resultDiv = document.getElementById('dressSizeResult');
if (isNaN(bust) || isNaN(waist) || isNaN(hips) || bust <= 0 || waist <= 0 || hips <= 0) {
resultDiv.innerHTML = "Please enter valid positive numbers for all measurements.";
return;
}
// US Sizing Chart (approximate averages in inches)
var usSizes = [
{ size: 0, bust: 31.5, waist: 23.5, hips: 33.5 },
{ size: 2, bust: 32.5, waist: 24.5, hips: 34.5 },
{ size: 4, bust: 33.5, waist: 25.5, hips: 35.5 },
{ size: 6, bust: 34.5, waist: 26.5, hips: 36.5 },
{ size: 8, bust: 35.5, waist: 27.5, hips: 37.5 },
{ size: 10, bust: 36.5, waist: 28.5, hips: 38.5 },
{ size: 12, bust: 38.0, waist: 30.0, hips: 40.0 },
{ size: 14, bust: 39.5, waist: 31.5, hips: 41.5 },
{ size: 16, bust: 41.0, waist: 33.0, hips: 43.0 },
{ size: 18, bust: 43.0, waist: 35.0, hips: 45.0 },
{ size: 20, bust: 45.0, waist: 37.0, hips: 47.0 },
{ size: 22, bust: 47.0, waist: 39.0, hips: 49.0 },
{ size: 24, bust: 49.0, waist: 41.0, hips: 51.0 }
];
var usCalculatedSize = -1;
var bestFitScore = Infinity;
for (var i = 0; i < usSizes.length; i++) {
var currentSize = usSizes[i];
// Calculate a "score" based on how much the measurements exceed the standard for this size.
// We want the smallest size where all measurements are met or slightly exceeded.
var bustDiff = bust – currentSize.bust;
var waistDiff = waist – currentSize.waist;
var hipsDiff = hips – currentSize.hips;
// If any measurement is significantly smaller than this size, it's not a good fit for this size.
// We're looking for the smallest size that accommodates all measurements.
if (bustDiff <= 0 && waistDiff <= 0 && hipsDiff -2 && waistDiff > -2 && hipsDiff > -2) { // Allow for slight under-measurement (e.g., 2 inches)
// If we're here, at least one measurement is larger than the current size.
// We need to find the smallest size where all measurements are *at least* close to the standard.
// This logic is tricky. Let's simplify: find the smallest size where *all* measurements are less than or equal to the size's standard.
// If no such size, then find the size where the *largest* measurement fits.
// Let's re-think: find the smallest size where *all* your measurements are less than or equal to the size's measurements.
// If that doesn't work (i.e., you're bigger than the biggest size), then find the size where your largest measurement fits.
// A more robust approach: find the smallest size where *all* your measurements are less than or equal to the size's measurements.
// If your measurements are larger than the largest standard size, then suggest the largest size or "custom".
// If your measurements are between sizes, it's common to size up.
var tempUsSize = currentSize.size;
if (bust <= currentSize.bust && waist <= currentSize.waist && hips <= currentSize.hips) {
usCalculatedSize = tempUsSize;
break; // Found the smallest size where all measurements are accommodated
}
}
}
// If no perfect fit found (e.g., measurements are larger than the largest standard size),
// or if we need to size up for the largest measurement.
if (usCalculatedSize === -1) {
// Find the size based on the largest individual measurement
var sizeByBust = -1, sizeByWaist = -1, sizeByHips = -1;
for (var i = 0; i < usSizes.length; i++) {
if (bust <= usSizes[i].bust) { sizeByBust = usSizes[i].size; break; }
}
for (var i = 0; i < usSizes.length; i++) {
if (waist <= usSizes[i].waist) { sizeByWaist = usSizes[i].size; break; }
}
for (var i = 0; i < usSizes.length; i++) {
if (hips <= usSizes[i].hips) { sizeByHips = usSizes[i].size; break; }
}
// If any measurement is larger than the largest standard size, set to the largest standard size.
if (sizeByBust === -1) sizeByBust = usSizes[usSizes.length – 1].size;
if (sizeByWaist === -1) sizeByWaist = usSizes[usSizes.length – 1].size;
if (sizeByHips === -1) sizeByHips = usSizes[usSizes.length – 1].size;
// Take the largest of the individual measurement-based sizes to ensure fit.
usCalculatedSize = Math.max(sizeByBust, sizeByWaist, sizeByHips);
}
var finalSize = "";
var conversionNote = "";
switch (region) {
case "US":
finalSize = "US Size: " + usCalculatedSize;
break;
case "UK":
// UK size is typically US size + 4
finalSize = "UK Size: " + (usCalculatedSize + 4);
conversionNote = " (Based on US Size " + usCalculatedSize + ")";
break;
case "EU":
// EU size conversion is more complex, often US size + 32 or 30
// Using a common mapping: US 0=EU32, US 2=EU34, US 4=EU36, etc. (US size * 2 + 32)
finalSize = "EU Size: " + (usCalculatedSize * 2 + 32);
conversionNote = " (Based on US Size " + usCalculatedSize + ")";
break;
case "AU":
// AU size is typically US size + 4 (similar to UK)
finalSize = "AU Size: " + (usCalculatedSize + 4);
conversionNote = " (Based on US Size " + usCalculatedSize + ")";
break;
case "JP":
// Japanese sizing is often 5, 7, 9, 11, 13, 15.
// US 0 = JP 5, US 2 = JP 7, US 4 = JP 9, etc. (US size + 5)
finalSize = "JP Size: " + (usCalculatedSize + 5);
conversionNote = " (Based on US Size " + usCalculatedSize + ")";
break;
default:
finalSize = "Region not supported for conversion.";
break;
}
if (usCalculatedSize === -1) {
resultDiv.innerHTML = "
Could not determine a standard size. Your measurements may be outside typical ranges. Consider custom sizing or trying on garments.";
} else {
resultDiv.innerHTML = "Your estimated dress size is:
" + finalSize + "" + conversionNote + ".
(Note: Sizing can vary significantly by brand and style.)";
}
}
Understanding dress sizes can be a perplexing task, especially with the vast differences in sizing standards across various regions and brands. A dress size calculator aims to simplify this by providing an estimated size based on your body measurements. This tool is particularly useful for online shopping, where you can't physically try on garments, or when navigating international sizing charts.
How Dress Sizes Work
Dress sizes are typically determined by a combination of key body measurements: bust, waist, and hips. However, the specific numerical or alphabetical designation for these measurements varies widely:
- US Sizing: Often uses even numbers (0, 2, 4, 6, etc.). These numbers generally correspond to specific bust, waist, and hip measurements, with larger numbers indicating larger sizes.
- UK Sizing: Also uses even numbers (4, 6, 8, 10, etc.), but these numbers are typically higher than their US equivalents for the same body measurements (e.g., a US size 4 is often a UK size 8).
- European (EU) Sizing: Uses numbers like 32, 34, 36, 38, etc. These are generally higher than both US and UK sizes for comparable measurements.
- Australian (AU) Sizing: Often mirrors UK sizing, with similar numerical values.
- Japanese (JP) Sizing: Can use numbers (e.g., 5, 7, 9) or letters (S, M, L). Japanese sizes tend to be smaller than Western sizes for the same numerical designation.
Beyond these regional differences, individual brands may have their own "vanity sizing" or unique fit models, meaning a size 8 from one brand might fit differently than a size 8 from another.
How to Take Accurate Measurements
For the most accurate results from this calculator, follow these guidelines for taking your measurements:
- Bust: Measure around the fullest part of your bust, keeping the tape measure parallel to the floor. Wear a non-padded bra for this measurement.
- Waist: Measure around the narrowest part of your natural waistline, typically just above your belly button. Ensure the tape is snug but not tight.
- Hips: Measure around the fullest part of your hips and rear, keeping the tape measure parallel to the floor.
Always use a flexible tape measure and ensure it's not twisted. It's often helpful to have someone assist you for more accurate readings.
Using the Dress Size Calculator
Our dress size calculator simplifies the process of finding your estimated size:
- Enter Measurements: Input your bust, waist, and hip measurements in inches into the respective fields.
- Select Region: Choose the sizing region you are interested in (e.g., United States, United Kingdom, European Union).
- Calculate: Click the "Calculate Dress Size" button.
The calculator will then provide an estimated dress size for your chosen region. Remember, this is an estimation. Always check the specific brand's size chart if available, and consider the fabric and style of the dress (e.g., stretchy fabrics might allow for more flexibility).
Examples of Use
Let's look at a few examples:
- Example 1 (US Sizing):
- Bust: 35.5 inches
- Waist: 27.5 inches
- Hips: 37.5 inches
- Region: United States
- Result: US Size 8
- Example 2 (UK Sizing):
- Bust: 34.5 inches
- Waist: 26.5 inches
- Hips: 36.5 inches
- Region: United Kingdom
- Result: UK Size 10 (based on US Size 6)
- Example 3 (EU Sizing):
- Bust: 38.0 inches
- Waist: 30.0 inches
- Hips: 40.0 inches
- Region: European Union
- Result: EU Size 44 (based on US Size 12)
This calculator is a helpful guide to get you started, but for the perfect fit, always consider trying on the garment or consulting detailed product descriptions and customer reviews.