How to Measure Underwear Size in the UK: A Complete Guide

Finding the perfect fit for your underwear is crucial, not just for comfort but also for your overall well-being. Wearing the wrong size can lead to discomfort, chafing, or even health issues like infections or skin irritation.

In the UK, underwear sizes can differ from those in other regions like the US or EU, so it’s important to measure yourself accurately to ensure a proper fit. In this guide, we will explain how to measure your underwear size accurately for the UK market and give you practical tips to avoid common sizing issues.

Whether you’re shopping for men’s or women’s underwear, this guide will walk you through the steps to find your correct size. We’ll also discuss the differences in sizing for various styles of underwear and provide tips on how to shop online without risking a poor fit.

Understanding UK Underwear Sizing

Before diving into how to measure yourself, it’s important to understand the UK sizing system for underwear. Unlike the US or European sizing, the UK tends to use different labels for underwear, which can cause confusion if you’re not familiar with it.

UK Sizing System

UK sizing for underwear comes in two common forms:

  1. Numerical Sizes: Generally used for women’s underwear, these numbers correspond to waist and hip measurements. For instance, sizes like 8, 10, 12, etc. usually reflect your waist in inches.
  2. Letter Sizes: These are more common for men’s underwear or casual women’s styles like briefs and thongs. Sizes range from XS (extra small) to XXL (extra extra large) and beyond.

Each brand may have slight variations in how these sizes are interpreted, making it important to measure yourself and consult size charts before purchasing.

Conversion Chart (Optional)

While this guide focuses on UK sizing, it’s helpful to understand how UK sizes compare to US and EU sizes. Below is a rough conversion chart for reference:

UK SizeUS SizeEU Size
8436
10638
12840
141042
Size chart

Tools You Need for Measuring

Accurately measuring your underwear size requires only a few simple tools, but each plays a key role in ensuring you get the most precise measurement possible.

Measuring Tape

A flexible, soft measuring tape is ideal for this process. These tapes, often used by tailors or dressmakers, allow you to wrap them around your body without creating any gaps or tightness that could distort the measurement.

Mirror

Using a full-length mirror allows you to ensure the measuring tape is positioned correctly. If it’s tilted or not placed level, your measurements could be inaccurate.

Note Pad or Phone

It’s important to write down your measurements immediately after taking them. A slight difference in waist or hip size can affect your underwear fit, so recording the precise number is crucial.

How to Measure for Men’s Underwear Size

When measuring for men’s underwear, focus on two key areas: the waist and the hips. Each plays an important role in determining how different styles of underwear will fit, such as briefs, boxers, or boxer briefs.

Step-by-Step Guide

  1. Waist Measurement:
    • Locate your natural waistline, which is typically the narrowest part of your torso, just above your belly button.
    • Stand up straight but relaxed. Wrap the measuring tape around your waist, ensuring that it’s parallel to the ground and not too tight or too loose.
    • Breathe out normally and take the measurement.
    A correct waist measurement is key for all types of men’s underwear.

Image source: sharicca.com

  1. Hip Measurement:
    • To measure your hips, wrap the tape around the fullest part of your hips and buttocks. This is important for styles like boxers that have more room in the seat. Ensure the tape is level and snug without digging into your skin.
    Recording the hip measurement will help with fuller-coverage underwear like boxers and trunks.

Image source: sharicca.com

Common Mistakes to Avoid
  • Tightening the Tape Too Much: This leads to a smaller-than-accurate size, making your underwear too tight.
  • Measuring Over Clothes: Always measure against your bare skin to get the most accurate numbers.

Sizing Tips for Different Types of Underwear

For Men

  • Boxers: These typically offer more room around the hips and thighs. Make sure your hip measurement is accurate for a relaxed fit.
  • Briefs: These are more form-fitting and sit close to the waist. Prioritize your waist measurement here.
  • Boxer Briefs: A combination of both styles, requiring accurate waist and hip measurements to avoid tightness or sagging.

For Women

  • Thongs: Measure your hips closely, as thongs tend to sit lower on the waist and focus on the hips.
  • Briefs: These sit higher on the waist, so an accurate waist measurement is important.
  • Shapewear: Shapewear often covers more of the body, so taking measurements of your waist, hips, and possibly thighs is crucial for a comfortable fit.

When to Size Up or Down

Even with the right measurements, sometimes you might feel the need to size up or down depending on your comfort preferences or the style of underwear you’re buying.

How Underwear Should Fit

  • Too Small: Underwear that’s too tight will dig into your skin, leaving red marks or causing discomfort throughout the day.
  • Too Big: Loose underwear can bunch up under clothing or cause discomfort from sliding around.

Always prioritize comfort over strict sizing if you’re between sizes.

When to Adjust Sizes

  • Weight Changes: If you’ve recently gained or lost weight, remeasure yourself before buying new underwear.
  • Pregnancy or Postpartum: Women may need to adjust their underwear size during pregnancy or after giving birth to accommodate changes in their body.

Online Shopping for Underwear in the UK

Shopping for underwear online can be tricky without trying it on first, but with your measurements in hand, it becomes much easier.

How to Use Brand Size Guides

Every brand has its own size guide, even within the UK market. Before purchasing, look at the size chart on the brand’s website and compare it with your measurements. Some brands may run smaller or larger, so it’s important to double-check before buying.

Return and Exchange Policies

Many retailers offer easy returns or exchanges, especially for underwear purchased online. Be sure to check these policies, as it can give you peace of mind when shopping for the perfect fit.

Conclusion

Measuring your underwear size may seem simple, but it’s a step that many people skip, leading to discomfort or frustration with ill-fitting undergarments. By following the steps outlined in this guide, you can accurately measure your waist and hips to find the perfect size for any style of underwear in the UK.

Regularly rechecking your measurements is important, especially if your body shape changes over time. With the right measurements, shopping for underwear—whether in-store or online—becomes much easier, and you can enjoy the comfort and confidence that comes with a perfect fit. So grab a measuring tape, take your measurements, and enjoy a more comfortable underwear experience!

Frequently Asked Questions (FAQs)

What is my underwear size UK?

To find your UK underwear size, measure your waist and hips using a flexible tape measure. Then, compare your measurements with a size chart for the specific brand you’re buying. UK sizes typically use numbers (8, 10, 12, etc.) for women and letter sizes (S, M, L) for men.

What is L in UK size?

In the UK, L (Large) usually corresponds to a waist size of 34-36 inches for men and roughly 14-16 for women, depending on the brand. Always check the brand’s size guide for accuracy.

How do I know my underwear size?

Measure your waist at the narrowest part and your hips at the fullest part using a measuring tape. Compare these measurements to the size chart provided by the underwear brand to find your correct size.

What size underwear for a 34 waist?

For a 34-inch waist, men’s underwear is typically L (Large), while for women, this would be around a UK size 14. Always consult the specific brand’s size guide to confirm the best fit.