How to Take a Half Chest Measurement on a Shirt

Measuring the half chest is a quick and straightforward way to get the width of a garment, which is super helpful for finding the right fit when shopping or making clothes. We always recommend measuring an actual garment (not your body) to avoid sizing mistakes, since fabric and fit can vary. Here’s how you can get an accurate half chest measurement:

1. Grab a measuring tape or a flexible ruler—these will give you the most accurate chest measurement.
2. Lay your chosen garment flat on a table, smoothing out any wrinkles so the fabric isn’t bunched up. Try to use a shirt or top that fits you well and is similar in style to the one you want to order.
3. Find the right spot to measure: the half chest measurement is taken straight across the front, from one side seam to the other, just below the armpits. This area is usually the broadest part of the shirt and gives you the best idea of the fit across the chest.
4. Stretch the tape measure from one side of the garment to the other, keeping it level and right under the armholes. Make sure the tape is lying flat and not twisted, so you get an accurate number.
5. Read the measurement at the end of the tape where it meets the opposite side seam. That’s your half chest measurement—write this number down for reference.
6. If you want to know the full chest measurement, just double the half chest measurement. This gives you the total width of the garment at the chest, which is handy when comparing to sizing charts or making custom clothing.

Taking the time to get your half chest measurement right helps ensure your clothes will fit comfortably and look great. It’s a useful trick whether you’re shopping online, checking size guides, or making your own clothes. Always note your measurement in inches or centimeters, depending on what the brand or pattern calls for, so you can confidently choose the perfect size every time.