Hat Size Calculator
Beräkna hatt storlek med detta gratis online verktyg
Hat Size Calculator
Calculate cast-on, body rows, and crown decrease schedule for knitted hats. Supports beanie, slouchy, and beret styles from baby to adult XL.
Head Circumference Size Chart
| Size | Circumference |
|---|---|
| Baby (0–6 months) | ~14" |
| Baby (6–12 months) | ~16" |
| Toddler (1–3 years) | ~18" |
| Child (4–10 years) | ~19" |
| Teen / Small Adult | ~20.5" |
| Adult S | ~21" |
| Adult M | ~22" |
| Adult L | ~23" |
| Adult XL | ~24" |
How to Use This Calculator
- Select a standard hat size or choose Custom and measure the head circumference.
- Choose your hat style — beanie (fitted), slouchy, or beret each have different proportions.
- Set negative ease (typically -1" to -2") so the hat stretches to fit snugly.
- Enter your blocked swatch gauge (stitches and rows per 4 inches).
- Click Calculate to get cast-on, row breakdown, and a crown decrease schedule.
Related Tools
All calculations are performed locally in your browser. No data is sent to any server. Results are estimates — always swatch and measure for your specific yarn and tension.
En gratis kalkylator för hattstorlek online som fungerar direkt i din webbläsare. Ingen registrering, inga gränser – skriv bara in dina värden och få resultat.
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