As a wig salesman for over a decade, I've seen countless customers struggle with ill-fitting wigs that slip, pinch, or look unnatural. The secret to a flawless wig experience starts before you even choose a style. It begins with an accurate head measurement. In this guide, I'll share the precise steps I teach my clients—the same method I use to make every part look natural and every wig feel like it's part of you.
Why Accurate Measurement Matters
A wig that doesn't fit properly will never look natural. If it's too loose, it can shift or even fall off. Too tight, and you'll get headaches and discomfort. But beyond comfort, measurement affects the wig's appearance. A correctly sized wig will sit flush against your head, allowing the part to blend seamlessly with your skin or natural hair. There's no magic—just math.
What You'll Need
- A soft measuring tape (sewing tape works best)
- A mirror (or a friend to help)
- A hair clip or band to hold your hair flat
- Paper and pen to record your numbers
Step 1: Prepare Your Hair
Before you start, make sure your hair is as flat as possible. If you have long or thick hair, pull it back into a low ponytail or braid it tightly. Use a hair cap or wrap a thin scarf around your head to keep your hair from affecting the measurements. The goal is to measure your head shape, not your hair volume.
Step 2: The Four Key Measurements
There are four essential measurements you need. Write each one down as you go. Most wig size charts will ask for these exact numbers.
Circumference
Place the tape at your front hairline, right at the center of your forehead. Wrap it around your head, going just above your ears and around the base of your skull where the wig will rest. The tape should be snug but not tight. Read the measurement where the tape meets. This is your wig circumference.
Front to Nape
Start the tape at your front hairline (center of forehead) and pull it over the top of your head, down to the nape of your neck where your hairline ends. This measures the length from front to back.
Ear to Ear (Forehead)
Place the tape at the top of one ear, just where the ear meets your head. Bring it across your forehead, following your hairline, to the top of the other ear. This helps determine the width of the front edge of the wig.
Ear to Ear (Over Crown)
Start at the top of one ear again, but this time go over the crown of your head (the highest point) to the top of the other ear. This measurement helps ensure the wig's dome fits your head's curvature.
Step 3: Compare with Wig Size Charts
Once you have your four numbers, compare them to the manufacturer's size chart. Most wigs come in Small, Medium, or Large, but some offer petite or extra large. If your measurements fall between sizes, go for the larger size—you can always adjust the straps inside the wig to tighten it, but you can't loosen a wig that's too small.
Step 4: Account for Wig Cap Features
Some wigs have adjustable straps, combs, or Velcro tabs inside to fine-tune the fit. If your measurements are on the edge of a size, these features can make all the difference. Additionally, consider whether you'll wear a wig cap underneath—if so, add about a quarter inch to the circumference measurement.
Common Mistakes to Avoid
- Don't measure over bulky hair—use a cap.
- Don't pull the tape too tight. A wig that's too tight will cause headaches.
- Don't assume one size fits all—every brand may vary slightly.
- Don't skip the ear-to-ear measurements; they're crucial for a natural look.
Roy's Secret Tip: The Part Test
If you want your wig part to look absolutely natural, measure the distance from the center of your scalp (where the part will be) to the front hairline. This helps you choose a wig with the right lace front or monofilament top. My long-time clients know this trick—it's the difference between a wig that looks fake and one that looks like it grew out of your head.
Measuring for Partial Wigs and Toppers
For hair toppers or partial wigs, you only need the front-to-back and ear-to-ear over crown measurements. Measure the area where the topper will sit—usually the top or crown. Pinpoint accuracy is even more important here because the clips will anchor into your natural hair.
Keep Your Measurements Handy
Once you have your numbers, save them in your phone or wallet. Your head size won't change (unless you gain or lose significant weight), so these measurements will serve you for every future wig purchase. I keep mine in a notes app with the date and brand for easy reference.
Measuring your head might take five minutes, but it saves you weeks of discomfort and returns. A well-fitted wig doesn't just look better—it feels like a second skin. And when you get that right, the part will look so natural that only you know it's a wig. That's the secret I share with every client.