UNice Beginner Guide: How to Measure Wig Length & Wig Cap Size

Choosing your first wig should feel exciting - not confusing. Many beginners struggle with two simple questions: how long will this wig actually look on me, and how do I know if the cap will fit my head?

Understanding how wig length and cap size are measured makes the entire process easier. This guide walks you through both step by step, so you can choose confidently and comfortably.

Part 1: Understanding Wig Length

Wig length is measured in inches, but how it looks can vary depending on hair texture, your height, and even your neck length. Knowing how length is measured helps set the right expectations before you buy.

How Wig Length Is Measured

Image: Wig by UNice

Wig length is measured from the top of the crown down to the very end of the longest hair strand.

The texture of the hair matters:

• Straight hair is measured flat, from crown to tip.
• Wavy or curly hair is measured when gently stretched straight.

This means a 20-inch curly wig will appear shorter than a 20-inch straight wig when worn naturally.

How to Measure a Wig at Home

If you already own a wig and want to check its length, follow these steps.

For Straight Wigs:

• Place the wig on a flat surface or mannequin.
• Use a soft measuring tape.
• Measure from the crown straight down to the longest point.

For Curly or Wavy Wigs:

• Gently stretch the curl downward.
• Measure from the crown to the tip while stretched.
• Release the curl afterward.

Always measure from the crown, not from the lace edge or forehead area.

How Length Looks in Real Life

While everyone's proportions are different, here is a general idea:

• 8–12 inches usually fall above or around the shoulders.
• 14–18 inches often fall below the shoulders.
• 20–24 inches typically reach mid-back.
• 26 inches and above can reach the lower back or beyond.

Your height also plays a role. The same wig will look longer on someone petite than on someone taller.

Part 2: How to Measure Your Head for the Right Wig Cap Size

A beautiful wig only feels good if it fits properly. Measuring your head takes just a few minutes and makes a big difference in comfort and security.

Image: Wig by UNice

Before measuring:

• Flatten your hair by braiding it down or wrapping it.
• Use a soft measuring tape.
• Stand in front of a mirror if possible.

The Three Key Measurements

1. Head Circumference

This is the primary measurement used to determine cap size.

How to measure:

• Start at your natural hairline.
• Wrap the tape around your head.
• Go behind your ears.
• Bring it down to the nape of your neck.
• Return to the starting point.

Make sure the tape is snug but not tight.

2. Front to Nape

This measures the length of your head.

• Start at the center of your hairline.
• Run the tape over the top of your head.
• End at the nape of your neck.

3. Ear to Ear (Across Forehead)

• Start at the top of one ear.
• Stretch the tape across your hairline.
• End at the top of the opposite ear.

Understanding Wig Cap Sizes

Most wigs are available in small, medium, and large sizes. The majority of women fall into the medium or average size range.

If your measurement falls between two sizes, choosing the slightly larger option is usually more comfortable, especially since many wigs include adjustable straps.

How a Proper Fit Should Feel

A well-fitting wig should:

• Sit securely without sliding.
• Feel comfortable around the hairline.
• Not cause pressure or headaches.
• Stay in place when you move your head.

For beginners, especially, feeling secure makes wearing a wig much more enjoyable. Some modern designs focus on improving that sense of security.

For example, the UNice Bye-Bye Slip™ Wig features a built-in silicone grip band designed to help the wig stay in place without constant adjustment.

Common Beginner Mistakes

• Measuring over bulky, unflattened hair.
• Pulling the measuring tape too tight.
• Measuring from the lace instead of the crown.
• Assuming all 20-inch wigs will look identical.
• Skipping measurements and guessing the cap size.

Frequently Asked Questions

Does wig length include the lace area?

No. Length refers only to the hair strands, not the lace or cap construction.

Why does my curly wig look shorter than expected?

Curly and wavy hair shrinks because of the pattern. They are measured when stretched, not in their natural curl state.

What if my wig feels slightly loose?

Try adjusting the internal straps first. If it still feels too loose, you may need a smaller cap size.

Can I measure my head by myself?

Yes. A mirror and soft measuring tape are enough, though having someone help can improve accuracy.

How often should I measure my head?

If your hair thickness changes significantly, such as after cutting, braiding, or relaxing your hair, it is a good idea to measure again.

Final Thoughts

Measuring wig length and cap size may seem small, but it makes a big difference. When you understand how measurements work, you can choose styles more confidently and avoid common beginner frustrations.

A wig should feel natural, comfortable, and secure. And it all starts with the right measurements.