Convert Head Size to Hat Size
Enter circumference in inches or cm to get fitted fractions (7 1/4, 7 3/8), plus US, UK, and EU labels—for baseball, cowboy, and everyday caps.
How to measure hat size
One accurate head circumference (inches or cm) unlocks fitted sizes like 7 1/4—about a minute of measuring.
1. Get a Soft Tape Measure
Wrap it around your head, about 1/8" above your ear.
2. Find the Circumference
Go across the mid-forehead, completely circling your head.
3. Read the Measurement
Hold the tape firmly, but not too tightly. Use the measurement in inches or cm in our converter.
Why Accurate Measurement Matters
A proper measurement is the difference between a hat you love and one you return. An accurate size ensures better comfort, prevents headaches from a tight fit, and makes sure your hat looks exactly as it was designed to. Take one minute to measure, and save yourself the hassle.
Explore Our Detailed Hat Size Charts
A Fit for Every Style
Different hats have different sizing. We provide detailed charts and guides for every type to ensure accuracy.
Frequently Asked Questions
Related Tools & Guides
Hat Size Charts
Browse comprehensive hat size charts by type and brand.
How to Measure Hat Size
Complete guide to accurately measuring your head for the perfect hat fit.
Snapback Hat Sizes
Learn about snapback hat sizing and fit adjustments.
Shoe Size Converter
Convert shoe sizes between US, UK, EU, CN, and CM standards.
Clothing Size Converter
Convert clothing sizes between US, UK, EU, and Asian standards.
Ring Size Converter
Convert ring sizes between US, UK, EU, Asian, and other international standards.