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Hat Size Calculator
Find your perfect hat size for fitted, adjustable & flexfit caps, Updated April 2026
19.5"22"24.5"26"
Your Hat Size
7 1/8
Fitted Cap
Fit Recommendation
Fitted Hat Size Chart
| Hat Size | Inches | Centimeters | S/M/L |
|---|
Brand Fit Comparison
| Brand | Fit | Profile | Best For |
|---|---|---|---|
| New Era 59FIFTY | Fitted | Mid-High | Structured, classic |
| Richardson 112 | Snapback | Mid | Trucker, breathable |
| Flexfit 6277 | Stretch | Mid | Comfort, no adjust |
| Yupoong Classic | Snapback | High | Flat brim, street |
| Port Authority C112 | Snapback | Mid | Corporate, logo |
| Carhartt Watch Cap | Beanie | -- | Workwear, cold weather |
Continue reading the guide
T-Shirt Size Chart: The Complete Sizing Guide for Every Brand →
Inch-accurate sizing charts across the 10 most-used US blank brands, plus how to measure, handle fit variance, and avoid the S/M/L reorder loop.
How to use this tool
- Measure your head circumference. Wrap a soft tape measure around your head, just above your ears and eyebrows. Note the measurement in inches or centimeters.
- Match to a hat size. Match your circumference to the corresponding hat size (S/M, L/XL, fitted size 7, 7 1/8, etc.) using the chart.
- Pick your hat style. Choose your style, Flexfit, snapback, dad hat, trucker, and confirm fit type (fitted, adjustable, stretch).
Sources & Further Reading
These authoritative sources informed the standards, materials, and best practices referenced in this guide.
- Centiles for Adult Head Circumference (Archives of Disease in Childhood) , Academic / peer-reviewed (PubMed Central)
- Flexfit Official Hat Sizing Chart (S/M and L/XL Head Circumference) , Brand official documentation (Flexfit / Yupoong)
- NIST: Shape and Size Analysis and Standards , Government (NIST)
Built by Arklavo. We run Arklavo, a US-based custom apparel shop. We have shipped custom embroidery, DTG, and screen print to small business teams, ops managers, and HR managers across the US, with no minimum order and free shipping over $150. We built this tool from numbers we use on real quotes every week. Request a quote from our team when you are ready to talk pricing on your specific project.
