Hat Size Calculator
Convert head circumference to hat sizes (US, UK, EU).
How to Use the Hat Size Calculator
- Enter the required values.
- Click Calculate to see the results.
- Review the output values.
- Adjust inputs as needed.
Quick Reference
| From | To |
|---|---|
| 54 cm | S / 6¾ |
| 56 cm | M / 7 |
| 58 cm | L / 7¼ |
| 60 cm | XL / 7½ |
| 62 cm | XXL / 7¾ |
| 64 cm | XXXL / 8 |
Use Cases
- •Quick estimation and planning.
- •Comparing different scenarios.
- •Budgeting and cost analysis.
- •Educational and research purposes.
Formula
Fitted size = Circumference (in) / π. Generic: S (<54), M (54–56), L (56–58), XL (58–60).
Frequently Asked Questions
How to use?
Enter the data and click the calculate button.
Calculation accuracy?
Calculations are performed with high precision.
Is it free?
Yes, all calculators are completely free.