Sports Bra Size Calculator

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Sports Bra Size Calculator :root { –primary-blue: #004a99; –success-green: #28a745; –light-background: #f8f9fa; –dark-text: #333; –border-color: #ccc; } body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; background-color: var(–light-background); color: var(–dark-text); line-height: 1.6; margin: 0; padding: 20px; display: flex; justify-content: center; align-items: flex-start; /* Align items to the top */ min-height: 100vh; } .loan-calc-container { background-color: #fff; border-radius: 8px; box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1); padding: 30px; max-width: 800px; width: 100%; display: flex; flex-direction: column; align-items: center; } h1, h2 { color: var(–primary-blue); text-align: center; margin-bottom: 20px; } .calculator-section { width: 100%; border: 1px solid var(–border-color); border-radius: 6px; padding: 25px; margin-bottom: 25px; background-color: #fff; } .calculator-section h2 { margin-top: 0; font-size: 1.8em; } .input-group { margin-bottom: 20px; display: flex; align-items: center; flex-wrap: wrap; /* Allow wrapping on smaller screens */ } .input-group label { flex: 1 1 150px; /* Grow, shrink, basis */ min-width: 150px; /* Minimum width for label */ margin-right: 15px; font-weight: 600; color: var(–primary-blue); display: block; /* Ensure label takes its own line if needed */ margin-bottom: 5px; /* Space below label if it wraps */ } .input-group input[type="number"], .input-group select { flex: 2 2 200px; /* Grow, shrink, basis for input */ padding: 10px 15px; border: 1px solid var(–border-color); border-radius: 4px; font-size: 1em; box-sizing: border-box; /* Include padding and border in the element's total width and height */ min-width: 150px; /* Ensure input has a minimum width */ } .input-group input[type="number"]:focus, .input-group select:focus { outline: none; border-color: var(–primary-blue); box-shadow: 0 0 0 2px rgba(0, 74, 153, 0.2); } button { background-color: var(–primary-blue); color: white; border: none; padding: 12px 25px; border-radius: 4px; font-size: 1.1em; cursor: pointer; transition: background-color 0.3s ease; display: block; width: 100%; max-width: 300px; /* Limit button width */ margin: 20px auto 0; /* Center the button */ } button:hover { background-color: #003366; } #result { margin-top: 30px; padding: 25px; background-color: var(–success-green); color: white; border-radius: 6px; text-align: center; font-size: 1.6em; font-weight: bold; box-shadow: 0 4px 8px rgba(40, 167, 69, 0.3); width: 100%; box-sizing: border-box; min-height: 60px; /* Ensure it has some height even when empty */ display: flex; justify-content: center; align-items: center; } .article-section { width: 100%; background-color: #fff; border: 1px solid var(–border-color); border-radius: 6px; padding: 25px; margin-top: 30px; } .article-section h2 { color: var(–primary-blue); text-align: left; font-size: 2em; margin-top: 0; } .article-section h3 { color: var(–primary-blue); margin-top: 20px; margin-bottom: 10px; font-size: 1.5em; } .article-section p, .article-section ul, .article-section li { margin-bottom: 15px; color: var(–dark-text); font-size: 1.1em; } .article-section ul { padding-left: 20px; } /* Responsive adjustments */ @media (max-width: 768px) { .input-group { flex-direction: column; align-items: stretch; } .input-group label { margin-right: 0; margin-bottom: 8px; flex-basis: auto; /* Reset flex basis for column layout */ } .input-group input[type="number"], .input-group select { width: 100%; flex-basis: auto; /* Reset flex basis for column layout */ } h1 { font-size: 2em; } .loan-calc-container { padding: 20px; } #result { font-size: 1.3em; } } @media (max-width: 480px) { h1 { font-size: 1.8em; } .calculator-section h2 { font-size: 1.5em; } button { font-size: 1em; padding: 10px 20px; } #result { font-size: 1.1em; padding: 15px; } }

Sports Bra Size Calculator

Find Your Perfect Fit

Select AA A B C D DD E F G H I J
Select Low Impact (Yoga, walking) Medium Impact (Hiking, cycling) High Impact (Running, HIIT)
Your recommended size will appear here.

Understanding Sports Bra Sizing

Finding the right sports bra is crucial for comfort, support, and performance during any physical activity. Unlike everyday bras, sports bras are designed to minimize breast movement, reduce discomfort, and prevent strain on Cooper's ligaments, which are vital for breast shape and support. This calculator helps you determine a recommended sports bra size based on your body measurements and activity level.

The Importance of Measurements

Accurate measurements are the foundation of a good fit.

  • Band Measurement: This is the measurement around your ribcage, directly under your bust. It should be snug but not uncomfortable. This forms the basis of your band size. For instance, a measurement of 75cm might correspond to a band size of 34 or 36 in traditional sizing, depending on the brand's specific grading.
  • Bust Measurement: This is the measurement around the fullest part of your bust, usually across the nipples. It's important to stand naturally and keep the tape measure parallel to the ground.

Calculating Cup Size

The cup size is determined by the difference between your bust measurement and your band measurement. A larger difference indicates a larger cup size.

  • Difference: Bust Measurement (cm) – Band Measurement (cm)

The resulting difference in centimeters is then used to determine the cup letter. The general guidelines are:

  • 0-2 cm: AA Cup
  • 2-5 cm: A Cup
  • 5-8 cm: B Cup
  • 8-10 cm: C Cup
  • 10-12 cm: D Cup
  • 12-14 cm: DD Cup (or E Cup)
  • 14-16 cm: E Cup (or F Cup)
  • 16-18 cm: F Cup (or G Cup)
  • 18-20 cm: G Cup (or H Cup)
  • 20-22 cm: H Cup (or I Cup)
  • 22-24 cm: I Cup (or J Cup)
  • 24+ cm: J Cup or larger

Note: These are approximations, and cup size grading can vary significantly between brands and even styles within a brand.

Considering Activity Level

Sports bras are categorized by the level of support they provide:

  • Low Impact: Ideal for activities like yoga, walking, or stretching. These often offer lighter compression and flexibility.
  • Medium Impact: Suitable for activities like brisk walking, cycling, or elliptical training. They provide more support than low-impact bras.
  • High Impact: Essential for high-intensity activities such as running, HIIT, or circuit training. These offer maximum compression to minimize bounce.

While this calculator primarily focuses on measurement-based sizing, the selected activity level is a crucial factor in choosing the right style of sports bra once you have your estimated size. A high-impact bra will typically have a tighter band, wider straps, and more substantial fabric coverage.

Why a Good Fit Matters

A well-fitting sports bra should:

  • Feel snug but not restrictive around the band.
  • Have straps that stay in place without digging into your shoulders.
  • Contain the bust without gaping or spilling out.
  • Minimize bounce during your chosen activity.
  • Not cause chafing or discomfort.

Different brands and styles will fit differently. Using this calculator is a starting point. Always try on a sports bra whenever possible, and consider the specific design (compression vs. encapsulation) that best suits your needs.

function calculateSportsBraSize() { var bandInput = document.getElementById("bandMeasurement"); var bustInput = document.getElementById("bustMeasurement"); var cupSizeSelect = document.getElementById("cupSize"); var supportLevelSelect = document.getElementById("supportLevel"); var resultDiv = document.getElementById("result"); var bandMeasurement = parseFloat(bandInput.value); var bustMeasurement = parseFloat(bustInput.value); var currentCup = cupSizeSelect.value; var supportLevel = supportLevelSelect.value; resultDiv.innerHTML = "Your recommended size will appear here."; resultDiv.style.backgroundColor = "var(–success-green)"; // Reset to default if (isNaN(bandMeasurement) || isNaN(bustMeasurement) || bandMeasurement <= 0 || bustMeasurement = bustMeasurement) { resultDiv.innerHTML = "Bust measurement must be larger than band measurement."; resultDiv.style.backgroundColor = "#dc3545"; // Error color return; } if (cupSizeSelect.value === "") { resultDiv.innerHTML = "Please select your current cup size."; resultDiv.style.backgroundColor = "#dc3545"; // Error color return; } if (supportLevelSelect.value === "") { resultDiv.innerHTML = "Please select your activity level."; resultDiv.style.backgroundColor = "#dc3545"; // Error color return; } var difference = bustMeasurement – bandMeasurement; var calculatedCup = ""; if (difference >= 0 && difference 2 && difference 5 && difference 8 && difference 10 && difference 12 && difference 14 && difference 16 && difference 18 && difference 20 && difference 22 && difference <= 24) calculatedCup = "I"; // Or J else calculatedCup = "J+"; // For differences greater than 24 var finalBandSize = ""; // Simplified band size calculation – in reality, this is more complex and brand-dependent. // This is a rough approximation to give a numerical band size. // Assumes common international sizing where ~2.5cm difference in measurement is ~1 inch/band size. // A 70-74cm band might be a 32, 75-79cm a 34, 80-84cm a 36, etc. var bandCm = bandMeasurement; if (bandCm = 68 && bandCm = 73 && bandCm = 78 && bandCm = 83 && bandCm = 88 && bandCm = 93 && bandCm = 98 && bandCm = 103 && bandCm = 108 && bandCm = 113 && bandCm = 118 && bandCm < 123) finalBandSize = "50"; else finalBandSize = "50+"; resultDiv.innerHTML = "Recommended Size: " + finalBandSize + calculatedCup; resultDiv.style.backgroundColor = "var(–success-green)"; }

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