Bra Size Calculator

Find Your Perfect Bra Fit with Our Bra Size Calculator

Did you know that up to 80% of women may be wearing the wrong bra size? Studies consistently highlight that poorly fitted bras are a widespread issue, often due to inconsistent sizing standards across brands and countries. A common mistake is choosing a band that’s too loose and a cup that’s too small, leading to discomfort and lack of support. Variations in sizing—where a 34B from one brand fits differently from another—add to the confusion. Our Bra Size Calculator takes the guesswork out of finding your ideal fit, offering precise measurements in both inches (US, UK, Australia) and centimeters (Europe, France, Spain) to ensure comfort and confidence, whether you’re shopping in New York or Paris.

Wearing the wrong bra size can cause more than just discomfort—it can lead to red marks, shoulder pain, or breasts spilling over the cups. Signs of a poor fit include a band that rides up, straps that dig in, or a center panel that doesn’t lie flat. Our calculator simplifies the process by using your underbust and bust measurements to determine accurate band and cup sizes, tailored to your region’s sizing standards. Perfect for everyday wear, sports bras, or special occasions, this tool helps women across the U.S., Europe, and beyond achieve a supportive, flattering fit in 2025, saving time and enhancing wardrobe confidence.