How to Use a Measuring Tape for Accurate Bra Sizing

Quick Answer

To get an accurate bra size, measure your underbust and full bust with a soft measuring tape, then calculate the difference. For non-wired bras like Molke's, focus on band and cup measurements rather than traditional cup letters. Always measure wearing a non-padded bra and keep the tape snug but not tight.

Getting the right bra size can feel like a puzzle, but a simple measuring tape is your best tool. Whether you're shopping for a new everyday bra or trying a different style, accurate measurements make all the difference. This guide walks you through the process step by step, so you can measure with confidence and avoid the guesswork.

Traditional sizing charts often assume underwire and molded cups, but many comfortable bras—like Molke's non-wired styles—use a different approach. Understanding how to measure correctly helps you translate your numbers into the right size, whether you're buying online or in-store.

Why Accurate Measurements Matter

A bra that fits well supports you all day without digging, slipping, or riding up. Inaccurate measurements can lead to discomfort, poor posture, and even skin irritation. When you measure correctly, you can compare your numbers to a brand's size chart and choose a bra that feels as good as it looks.

Non-wired bras often have more flexible sizing. For example, Molke's Original Bra uses band and cup sizes that may differ from standard letter sizing. Taking precise measurements lets you see how your body aligns with their chart, reducing the need for returns and exchanges.

• Measure at the end of the day when your breasts are at their fullest, but avoid measuring right after exercise or during your period if you experience swelling.

What You'll Need

Grab a soft, flexible measuring tape (like one used for sewing), a mirror, and a piece of paper to note your numbers. Wear a non-padded, non-wired bra or go braless for the most accurate results. Avoid measuring over thick clothing or a padded bra, as this adds bulk and skews the numbers.

If you don't have a measuring tape, you can use a piece of string and a ruler, but a soft tape is easiest to wrap around your body. Make sure the tape is not stretched or twisted.

Step-by-Step Measuring Process

First, measure your underbust: wrap the tape snugly around your ribcage, directly under your bust. Keep the tape level all the way around and exhale normally. Note the measurement in inches or centimeters—use the same unit as the brand's size chart.

Next, measure your full bust: wrap the tape around the fullest part of your chest, usually at nipple level. Keep the tape parallel to the floor and not too tight. Write down this number as well.

The difference between these two measurements helps determine cup size in traditional sizing, but for non-wired bras, you may need to use the brand's specific chart. For instance, Molke's Original Bra asks for band and cup measurements rather than a single letter.

Your Measuring Tape Checklist

1. Measure your underbust: Wrap the tape around your ribcage, just under your breasts. Keep it snug but not tight, and make sure it's level. Exhale and note the number. Checkpoint: The tape should feel like a firm handshake—not loose, not cutting in.
2. Measure your full bust: Wrap the tape around the fullest part of your chest, usually across the nipples. Keep it parallel to the floor and avoid pulling too tight. Checkpoint: The tape should sit flat without compressing your breast tissue.
3. Calculate the difference: Subtract your underbust measurement from your full bust measurement. In traditional sizing, each inch difference equals one cup size, but for non-wired bras, check the brand's chart for band and cup numbers. Checkpoint: For Molke Original Bras, you'll need both band and cup measurements, not just a letter.
4. Check your measurements twice: Repeat each measurement to ensure consistency. If the numbers differ, take a third reading and use the average. Checkpoint: Accuracy matters—small errors can lead to a poor fit.

How Molke Bras Use Your Measurements

• Original Bra - Iris: Original bras are wonderfully non-wired, supportive throughout the day, and comfortable—your bra shouldn't be the first thing you want to rip off when you get home. Because there's no underwire, the band and cup measurements are crucial. A well-fitted non-wired bra relies on accurate underbust and full bust numbers to provide support without digging.
• Original Bra - Stormy Lace: Stormy Lace is a black lace pattern over a warm grey background with black trim, and like all Original bras, it's non-wired and designed for all-day comfort. The stretchy lace and non-wired design mean the fit is more forgiving, but you still need correct measurements to ensure the band sits snugly and the cups encapsulate without gaping.

With these simple steps, you can use a measuring tape to get accurate bra measurements and choose a bra that supports you comfortably all day. Whether you're eyeing a bold Iris or a moody Stormy Lace, the right measurements are your first step to a great fit.