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Standard Sizing Chart for Hats
Head sizes
Although it is preferable to work with actual measurements when knitting hats, this chart gives you a guide depending on the age required.
The circumference of the hat should measure about 2.5cm less than the actual head measurement. Simply run a tape measure from the forehead, about 2.5cm above the brows, and then around the bump behind the head (the tape will be on the diagonal). All measurements are in centimeters.
| Age | Circumference | Height |
|---|---|---|
| Newborn - 1 month | 32 | 15 |
| 1 to 3 months | 34.5 | 17 |
| 3 to 6 months | 37 | 18 |
| 6 to 9 months | 38 | 18 |
| 9 to 12 months | 39.5 | 18 |
| 12 to 18 months | 41 | 19 |
| 18 to 24 months | 43 | 19 |
| 2 to 5 years | 45.5 | 20 |
| 5 to 10 years | 48 | 22 |
| Teenager | 51 - 55 | 25 |
| Women | 55 - 60 | 28 |
| Men | 58 - 61 | 28-31 |
Measures are in cm.