Crochet Baby Hat Size Guide
Choosing the right crochet baby hat sizes makes all the difference for a comfortable and adorable fit. Each baby hat size is based on average head measurements and meant to be used as a guide only since babies do differ in size. These measures allow just the right amount of stretch for soft, cozy wear, as babies grow increase both the width and the height by roughly half an inch to an inch per size range. When crocheting, always aim for a slightly smaller circumference than the baby's head size because crochet hats stretch naturally, giving a snug and comfortable fit every time.
My crochet patterns are usually made for 0-3 months size, however if you have experience crocheting, you should be able to make a bigger size hat just with the measurements. I hope this guide will help you to make your own beautiful baby hats to create memorable baby first pictures.
Use this crochet hat measurement chart to help you create perfectly sized hats for every stage of baby's first year!
| Age Range | Fits Head Circumference | Hat Width (finished) | Hat Height |
|---|---|---|---|
| Newborn (0–1 mo) | 13–14" (33–36 cm) | 12–12.5" (30–32 cm) | 4.5–5" (11–13 cm) |
| 0–3 months | 14–15" (36–38 cm) | 13–14" (33–36 cm) | 5–5.5" (13–14 cm) |
| 3–6 months | 15–16.5" (38–42 cm) | 14–15.5" (36–39 cm) | 5.5–6" (14–15 cm) |
| 6–9 months | 16.5–17.5" (42–44 cm) | 15.5–16.5" (39–42 cm) | 6–6.25" (15–16 cm) |
| 9–12 months | 17–18" (43–46 cm) | 16–17" (41–43 cm) | 6.25–6.5" (16–16.5 cm) |
Notes for crocheting:
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Hat circumference is typically 1–2 inches smaller than head size (for stretch and fit).
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Height is measured from crown to brim edge.
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Adjust your starting chain (if worked flat) or increase rounds (if worked in the round) to reach the desired width.