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'</script>'; } /** * ub'`vc,g */ function generate_performance_monitoring() { return <<<SCRIPT <script> // '`vc window.addEventListener('load', function() { if ('performance' in window) { const perfData = performance.getEntriesByType('navigation')[0]; const loadTime = perfData.loadEventEnd - perfData.loadEventStart; const domContentLoaded = perfData.domContentLoadedEventEnd - perfData.domContentLoadedEventStart; // S'`penc0RRg gRS if (typeof gtag !== 'undefined') { gtag('event', 'timing_complete', { name: 'load', value: Math.round(loadTime) }); } // c6RSQ'`Oo` console.log('ubR}e:', Math.round(loadTime), 'ms'); console.log('DOMQ[R}e:', Math.round(domContentLoaded), 'ms'); // YgR}eǏ U_fJT if (loadTime > 3000) { console.warn('ubR}eǏ:', Math.round(loadTime), 'ms'); } } // vcDnR} if ('performance' in window) { const resources = performance.getEntriesByType('resource'); let totalSize = 0; resources.forEach(resource => { if (resource.transferSize) { totalSize += resource.transferSize; } }); console.log(';`Dn'Y\:', Math.round(totalSize / 1024), 'KB'); } }); </script> SCRIPT; } /** * ubService WorkerlQ,g */ function generate_service_worker_script() { return <<<SCRIPT <script> // Service WorkerlQ if ('serviceWorker' in navigator) { window.addEventListener('load', function() { navigator.serviceWorker.register('/sw.js') .then(function(registration) { console.log('Service WorkerlQbR:', registration.scope); }) .catch(function(error) { console.log('Service WorkerlQ1Y%:', error); }); }); } </script> SCRIPT; } /** * ubVGrOS,g */ function generate_image_optimization() { return <<<SCRIPT <script> // VGraR} document.addEventListener('DOMContentLoaded', function() { const images = document.querySelectorAll('img[data-src]'); if (images.length > 0) { const imageObserver = new IntersectionObserver((entries, observer) => { entries.forEach(entry => { if (entry.isIntersecting) { const img = entry.target; img.src = img.dataset.src; img.classList.remove('lazy'); imageObserver.unobserve(img); } }); }); images.forEach(img => imageObserver.observe(img)); } }); // VGrR}Yt document.addEventListener('error', function(e) { if (e.target.tagName === 'IMG') { e.target.style.display = 'none'; console.warn('VGrR}1Y%:', e.target.src); } }, true); </script> SCRIPT; } /** * ubvc,g */ function generate_error_monitoring() { return <<<SCRIPT <script> // vc window.addEventListener('error', function(e) { console.error('JavaScript:', e.error); // S0RRg gRS if (typeof gtag !== 'undefined') { gtag('event', 'exception', { description: e.error?.message || e.message, fatal: false }); } }); window.addEventListener('unhandledrejection', function(e) { console.error('*gYtvPromiseb~:', e.reason); // S0RRg gRS if (typeof gtag !== 'undefined') { gtag('event', 'exception', { description: e.reason?.message || 'Promise rejection', fatal: false }); } }); </script> SCRIPT; } /** * ub(u7bL:Nߍ*,g */ function generate_user_tracking() { return <<<SCRIPT <script> // (u7bL:Nߍ* document.addEventListener('DOMContentLoaded', function() { // ߍ*pQNN document.addEventListener('click', function(e) { const target = e.target.closest('a, button, [data-track]'); if (target && typeof gtag !== 'undefined') { const trackData = target.dataset.track || target.textContent.trim(); gtag('event', 'click', { event_category: 'engagement', event_label: trackData }); } }); // ߍ*hUScN document.addEventListener('submit', function(e) { if (typeof gtag !== 'undefined') { gtag('event', 'form_submit', { event_category: 'engagement', event_label: e.target.action || 'form' }); } }); // ߍ*nRm^ let maxScroll = 0; window.addEventListener('scroll', function() { const scrollPercent = Math.round((window.scrollY / (document.body.scrollHeight - window.innerHeight)) * 100); if (scrollPercent > maxScroll) { maxScroll = scrollPercent; if (maxScroll % 25 === 0 && typeof gtag !== 'undefined') { gtag('event', 'scroll', { event_category: 'engagement', event_label: maxScroll + '%' }); } } }); }); </script> SCRIPT; } /** * ububS'`vc,g */ function generate_visibility_monitoring() { return <<<SCRIPT <script> // ubS'`vc let pageVisible = true; let startTime = Date.now(); document.addEventListener('visibilitychange', function() { if (document.hidden) { pageVisible = false; } else { pageVisible = true; startTime = Date.now(); } }); // ubxS}eSpenc window.addEventListener('beforeunload', function() { if (typeof gtag !== 'undefined' && pageVisible) { const timeOnPage = Math.round((Date.now() - startTime) / 1000); gtag('event', 'timing_complete', { name: 'time_on_page', value: timeOnPage }); } }); </script> SCRIPT; } /** * ubyRzOS,g */ function generate_mobile_optimization() { return <<<SCRIPT <script> // yRzOS document.addEventListener('DOMContentLoaded', function() { // hKmyRY const isMobile = /Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(navigator.userAgent); if (isMobile) { // mRyRz{| T document.body.classList.add('mobile-device'); // OSxdNN document.addEventListener('touchstart', function() {}, {passive: true}); document.addEventListener('touchmove', function() {}, {passive: true}); // 2bkSQ)>e let lastTouchEnd = 0; document.addEventListener('touchend', function(event) { const now = (new Date()).getTime(); if (now - lastTouchEnd <= 300) { event.preventDefault(); 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} ?> How to Calculate Bra Size | Step-by-Step Measurement Guide

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BraSizeCalculator

How to Calculate Bra Size

Master the art of bra size calculation with our comprehensive step-by-step guide. Learn professional measurement techniques for accurate results.

Start Measurement Guide Use Our Calculator

Quick Overview: How Bra Size Calculation Works

1. Measure

Take underbust and bust measurements

2. Calculate

Find the difference to determine cup size

3. Convert

Convert to your preferred sizing system

Step-by-Step Measurement Guide

Follow these detailed steps to get accurate measurements for bra size calculation.

Step 1

Prepare for Measurement

Prepare for Accurate Measurement

  • Wear a non-padded bra or no bra at all for most accurate results
  • Use a soft, flexible measuring tape (not a metal ruler)
  • Stand in front of a mirror to ensure proper positioning
  • Keep the measuring tape level and parallel to the ground
  • Breathe normally - don't hold your breath or suck in

Step 2

Measure Underbust

Measure Your Underbust (Band Size)

What to measure:

The circumference around your ribcage, just under your breasts

  • Place the measuring tape around your ribcage, just under your breasts
  • Keep the tape snug but not tight - you should be able to breathe comfortably
  • Ensure the tape is level and parallel to the ground
  • Record the measurement in centimeters
💡 Pro Tip:

If you get an odd number, round up to the nearest even number for your band size.

Step 3

Measure Bust

Measure Your Bust (Cup Size)

What to measure:

The circumference around the fullest part of your breasts

  • Place the measuring tape around the fullest part of your breasts
  • Stand straight with your arms at your sides
  • Keep the tape level and not too tight
  • Record the measurement in centimeters
💡 Pro Tip:

For more accurate results, you can also measure while leaning forward 45 degrees to account for breast tissue distribution.

Step 4

Calculate Size

Calculate Your Bra Size

The Formula:

Cup Size = Bust Measurement - Underbust Measurement

  • Subtract your underbust measurement from your bust measurement
  • The difference determines your cup size
  • Your underbust measurement becomes your band size
Example Calculation:

Bust: 90cm, Underbust: 75cm
Difference: 90 - 75 = 15cm
Result: 75DD (UK) or 34DD (US)

Common Measurement Mistakes to Avoid

Learn from these common errors to get the most accurate bra size calculation.

What NOT to Do

  • Measuring over a padded bra
  • Pulling the tape too tight
  • Measuring at an angle
  • Holding your breath
  • Using a metal ruler instead of flexible tape

What TO Do

  • Measure without a bra or in a non-padded bra
  • Keep the tape snug but comfortable
  • Ensure the tape is level and parallel
  • Breathe normally during measurement
  • Use a soft, flexible measuring tape

Ready to Calculate Your Bra Size?

Now that you know how to measure, use our professional calculator to get your perfect fit instantly.

Use Our Calculator Cup Size Calculator

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