How to Measure Your Head for a Wig in 60 Seconds
A wrong-size wig gives you exactly two outcomes: a unit that slips backward all day, or a headache by 2 PM. Both are avoidable with a soft tape measure and one minute. Here's the exact routine.
Before you measure
- Flatten your hair first. Braid down or slick back — measuring over a puffy bun adds up to an inch and guarantees a loose fit.
- Use a soft measuring tape. No tape? A piece of string plus a ruler works.
- Stand at a mirror or ask a friend. Solo measuring from feel alone drifts high.
The 3 measurements that matter
- Circumference — start at your front hairline, go behind one ear, around the nape, behind the other ear, back to start. This is the number size charts use.
- Front to nape — from the center of your front hairline, straight over the crown, down to the nape of your neck.
- Ear to ear — from the top of one ear, across the crown, to the top of the other.
Write all three down in inches. Circumference decides your size; the other two catch edge cases (long crowns, high foreheads) that make an "average" cap fit wrong.
Wig size chart
| Size | Circumference | Notes |
|---|---|---|
| Petite | Under 21.5" | Look for petite/small-cap lines |
| Average | 21.5" – 22.5" | Fits roughly 85% of women |
| Large | Over 22.5" | Look for large-cap options |
Fit check after it arrives
- The cap edge should sit on your natural hairline, not behind or over it.
- You should fit one finger under the band — snug, not tight.
- Shake your head "no" hard, twice. Any shift means tighten the band or reposition the combs.
Size sorted? Now the shade.
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My circumference is between sizes. Which way do I go?
Size down. An adjustable band can loosen comfortably, but an oversized cap can't shrink — and a loose wig telegraphs "wig" instantly.
Do I measure differently for a lace front vs. a full-cap wig?
No — the three measurements are identical. Lace type changes the hairline finish, not the cap size.
How much does hair volume under the wig matter?
A lot. Cornrows straight back add the least bulk; a low bun can add a full size. Measure the way you'll actually wear your hair underneath.