How to Find Your Perfect Bra Size Without a Fitting

Quick Answer

You can find your bra size at home with just a soft measuring tape and two simple measurements: your underbust and your fullest bust. Use our step-by-step guide to measure accurately, then check the Molke size chart to translate those numbers into your perfect size. No professional fitting required.

Forget the intimidating dressing room and the fitting expert you never get to see. Finding your bra size at home is not only possible—it's often more accurate because you can measure in your own space, in your usual posture, and without feeling rushed. Whether you're shopping online or just want to double-check your current size, a reliable bra measurement guide is all you need.

In this guide, we'll walk you through the exact steps to measure yourself, highlight common mistakes to avoid, and show you how to use the Molke size chart to find a bra that truly fits. Plus, we'll share how Molke's flexible sizing and non-wired designs accommodate natural size fluctuations, so you can feel confident in your choice.

Why Measure at Home?

Professional fittings can be inconsistent—different brands, different fitters, and even the time of month can change results. Measuring at home gives you control and consistency. You can measure when your body is at its most typical state, and you can repeat the process whenever you need to check for changes.

Plus, with online shopping becoming the norm, knowing your measurements is essential for choosing the right size from any brand. A good bra measurement guide empowers you to shop confidently, whether you're buying a Racerback Bralette or an Original Bra.

What You'll Need

Gather a soft measuring tape (like the ones used for sewing), a mirror, and a well-fitting non-padded bra (or go braless for the most accurate underbust measurement). Wear the bra you'd typically wear for everyday comfort, but avoid padding or push-up styles that can distort your natural shape.

If you don't have a soft tape, use a piece of string and a ruler. Just make sure the string doesn't stretch.

Step-by-Step Measurement Process

Follow these steps carefully for the most accurate results. Take each measurement twice to ensure consistency, and write down the numbers.

Remember: Your bra size is not a fixed number—it can change with weight fluctuations, pregnancy, or even time of day. Measuring regularly helps you stay in the right size.

• Measure under the bust: Wrap the tape snugly around your ribcage, right under your bust. Keep it level and parallel to the floor. Breathe out normally and note the measurement in inches.
• Measure the fullest part of your bust: Wrap the tape around the fullest part of your bust, usually across the nipple line. Keep it loose enough to not compress your breasts, and again keep it level.
• Record both measurements and use them to calculate your size.

Understanding the Molke Size Chart

Molke uses a unique sizing system that prioritizes comfort and inclusivity. Their size chart is designed to cover a wide range of body shapes, including UK sizes 6-40 for bralettes and a variety of band and cup sizes for the Original Bra.

When you have your measurements, compare them with the Molke size chart. For the Original Bra, you'll select a band size and a cup size. For the Racerback Bralette, you'll choose a single size that corresponds to your measurements. The chart is straightforward, but if you're between sizes, Molke recommends sizing up for a more relaxed fit or down for firmer support.

Your Step-by-Step Bra Size Checklist

1. Measure Your Underbust: Wrap the tape measure snugly around your ribcage, directly under your bust. Ensure the tape is level and not too tight. Take the measurement in inches and round to the nearest whole number. Mistake to avoid: Don't pull the tape too tight or let it sag—aim for a snug, level fit.
2. Measure Your Fullest Bust: Wrap the tape around the fullest part of your bust, usually at nipple level. Keep the tape loose enough to avoid compressing your breast tissue, but not so loose that it slips. Mistake to avoid: Wearing a padded bra can distort this measurement. Go braless or wear a non-padded bra.
3. Calculate Your Size: Subtract your underbust measurement from your bust measurement. The difference in inches corresponds to your cup size (1 inch = A, 2 = B, 3 = C, etc.). Your band size is your underbust measurement, rounded to the nearest even number. Checkpoint: If the difference is an odd number, try the next cup size up for comfort. Always consult the Molke size chart for final confirmation.

Products That Fit Your Measurements

• Original Bra - Nude One: These bras are beautifully soft and gentle, yet supportive. Molke Original bras are wonderfully non-wired, supportive, and comfortable. If your measurements suggest a specific band and cup size, the Original Bra offers a structured fit with adjustable band and cup options, making it easier to match your exact numbers.
• Racerback Bralette - Black: A black bra is a staple in almost all underwear drawers. Great for work or concealing under dark tops, this bra offers fantastic support. Molke Racerback Bralettes are wonderfully non-wired and size-inclusive, covering a UK Size 6-40. For those who prefer a wire-free option or have fluctuating sizes, the Racerback Bralette's flexible sizing accommodates a range of measurements without needing exact cup and band numbers.

Measuring your bra size at home is a simple skill that saves time and frustration. With these steps and the Molke size chart, you can confidently find a bra that fits beautifully—whether you choose a structured Original Bra or a flexible Racerback Bralette. Remember to re-measure periodically, as your body changes naturally. Happy fitting!