Finding the perfect hat isn’t just about style—it’s also about fit. A hat that’s too tight can cause discomfort, while one that’s too loose may slide off or look awkward. That’s why understanding hat sizes is crucial. In this guide, we’ll break down hat sizing systems, how to measure your head, and provide a comprehensive hat size chart for men, women, and children.
🧭 How Hat Sizing Works
Hat sizes are measured in inches or centimeters, depending on the region. There are typically three sizing systems:
- Numerical Sizing – Common in the U.S. and Europe (e.g., 7, 7 1/8, 58 cm)
- Alpha Sizing – Uses general sizes like S, M, L, XL
- One Size Fits Most – Adjustable hats with straps or elastic (not suited for fitted hats)
📏 How to Measure Your Head for a Hat
You’ll need:
- A soft measuring tape (or string and ruler)
- A mirror
- A notepad
Steps:
- Wrap the tape around your head where the hat will sit—about 1/8 inch above the ears and across the mid-forehead.
- Keep it snug but not tight.
- Read the measurement in inches or centimeters.
- Use the measurement to find your size in the chart below.
🧢 Complete Hat Size Chart
| Head Circumference | U.S. Size | U.K. Size | Metric (cm) | Alpha Size |
|---|---|---|---|---|
| 20 7/8″ | 6 5/8 | 6 1/2 | 53 | XS |
| 21 1/4″ | 6 3/4 | 6 5/8 | 54 | S |
| 21 5/8″ | 6 7/8 | 6 3/4 | 55 | S |
| 22″ | 7 | 6 7/8 | 56 | M |
| 22 3/8″ | 7 1/8 | 7 | 57 | M |
| 22 3/4″ | 7 1/4 | 7 1/8 | 58 | L |
| 23 1/8″ | 7 3/8 | 7 1/4 | 59 | L |
| 23 1/2″ | 7 1/2 | 7 3/8 | 60 | XL |
| 23 7/8″ | 7 5/8 | 7 1/2 | 61 | XL |
| 24 1/4″ | 7 3/4 | 7 5/8 | 62 | XXL |
| 24 5/8″ | 7 7/8 | 7 3/4 | 63 | XXL |
👨 Men’s vs 👩 Women’s Hat Sizes
Although hat sizes are unisex in many cases, men’s hats tend to be slightly larger. Women’s fashion hats may have a slightly tighter fit or more design-focused sizing.
| Gender | Average Hat Size |
|---|---|
| Men | 7 1/4 (58 cm) |
| Women | 7 (56 cm) |
👶 Kids’ Hat Sizes (Approximate)
| Age Range | Head Circumference | U.S. Hat Size | Alpha Size |
|---|---|---|---|
| 0–6 months | 15–17″ | 5–5 3/8 | XS |
| 6–12 months | 16–18″ | 5 3/8–5 7/8 | S |
| 1–2 years | 18–19.5″ | 6–6 1/4 | M |
| 2–5 years | 19.5–20.5″ | 6 1/4–6 3/8 | L |
| 6–12 years | 20.5–21.5″ | 6 3/8–6 7/8 | XL |
📝 Note: Always check brand-specific charts—sizes may vary slightly.
🧠 Tips for Buying Hats Online
- Measure Twice – Double-check before ordering.
- Check the return policy – Especially if it’s a fitted hat.
- Adjustable hats – Great for gifts or in-between sizes.
- Material matters – Wool can stretch slightly; straw won’t.
🎯 Final Thoughts
Knowing your hat size ensures comfort, style, and confidence. Whether you’re looking for a sun hat, baseball cap, or formal fedora, the right fit will elevate your look and feel. Use this chart and guide to measure correctly and pick the perfect hat—because every head deserves the right crown.
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