How much yarn for a hat?
How much yarn for a knit or crochet hat: yards and grams for newborn, baby, child and adult beanies and slouchy hats in DK, worsted, bulky and super bulky yarn.
Make a swatch of at least 6 × 6 in in your stitch, wash and block it, then measure and weigh it.
Pattern yarn — from the materials list.
Your new yarn — from its label.
You need about
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Hat yarn requirements
An adult beanie is usually knitted about 1–2 inches smaller than the head (negative ease) so it stays on: a 21–22 inch head gets a 20 inch hat, about 8–9 inches tall from brim to crown. The calculator multiplies that tube by the yarn rate and adds 15% for the ribbed brim and crown decreases.
Most adult hats need 140–210 yards of worsted — a single 100 g skein, which is why hats are the classic one-skein project. A bulky beanie needs about 100–140 yards. Add 15–25 yards for a pompom (more for a big fluffy one) and double the brim estimate if you fold it up.
Crochet hats generally use 30–50% more yarn than knitted hats of the same size because crochet stitches are thicker. Half double crochet and ribbed back-loop stitches are popular because they stretch well.
Hat yardage chart
| Size | Light (3) DK | Medium (4) Worsted | Bulky (5) Chunky | Super Bulky (6) Super chunky |
|---|---|---|---|---|
| Newborn 13 in around × 5.5 in tall | 7570 m · 1 sk | 6055 m · 1 sk | 4540 m · 1 sk | 3025 m · 1 sk |
| Baby (6–12 mo) 16 in around × 6.5 in tall | 110100 m · 1 sk | 8580 m · 1 sk | 6560 m · 1 sk | 4540 m · 1 sk |
| Child 18 in around × 7.5 in tall | 140130 m · 1 sk | 115105 m · 1 sk | 8575 m · 1 sk | 5550 m · 1 sk |
| Adult beanie 20 in around × 8.5 in tall | 175160 m · 1 sk | 140130 m · 1 sk | 10595 m · 1 sk | 7065 m · 2 sk |
| Adult slouchy 21 in around × 11 in tall | 240220 m · 1 sk | 195175 m · 1 sk | 145130 m · 2 sk | 9590 m · 2 sk |
Values are yards with 10% extra; small figures are meters and skeins of a typical ball: light 250 yd / 100 g, medium 200 yd / 100 g, bulky 130 yd / 100 g, super bulky 70 yd / 100 g. Use the calculator with your own label for exact skein counts.
| Size | Light (3) DK | Medium (4) Worsted | Bulky (5) Chunky | Super Bulky (6) Super chunky |
|---|---|---|---|---|
| Newborn 13 in around × 5.5 in tall | 110100 m · 1 sk | 8580 m · 1 sk | 6560 m · 1 sk | 4540 m · 1 sk |
| Baby (6–12 mo) 16 in around × 6.5 in tall | 155145 m · 1 sk | 125115 m · 1 sk | 9585 m · 1 sk | 6560 m · 1 sk |
| Child 18 in around × 7.5 in tall | 200185 m · 1 sk | 165150 m · 1 sk | 125110 m · 1 sk | 8075 m · 2 sk |
| Adult beanie 20 in around × 8.5 in tall | 260240 m · 2 sk | 210190 m · 2 sk | 155140 m · 2 sk | 10595 m · 2 sk |
| Adult slouchy 21 in around × 11 in tall | 350320 m · 2 sk | 280260 m · 2 sk | 210190 m · 2 sk | 140130 m · 2 sk |
Values are yards with 10% extra; small figures are meters and skeins of a typical ball: light 250 yd / 100 g, medium 200 yd / 100 g, bulky 130 yd / 100 g, super bulky 70 yd / 100 g. Use the calculator with your own label for exact skein counts.
About these numbers: estimates assume typical gauge for each yarn weight. Your tension, hook or needle size and stitch pattern can move them by ±15% or more — weigh a swatch in the swatch calculator for a figure based on your own work.
Tips
- Fabric circumference: head minus 1–2 in
- Adult worsted beanie: one 100 g skein
- Pompom: add 15–25 yd
- Folded brim: add ~20%
How to work out how much yarn you need
- Choose the project. Pick knit or crochet, the project and its size — or a custom width and length.
- Set the yarn. Choose the yarn weight (CYC 0–7) and stitch, then type the length and grams from your skein label.
- Add a safety margin. Keep 10% extra, or more for tight tension, borders and fringe.
- Check with a swatch. For the most accurate number, weigh a blocked swatch in the From a swatch tab and scale it to your project.
FAQ
How much yarn for a hat?
A typical adult beanie (20 in around × 8.5 in tall) in medium weight needs about 140 yards (130 m) including 10% extra, knitted in stockinette.
Quick rule of thumb for hat yarn?
Fabric circumference: head minus 1–2 in.
How accurate is a yarn calculator?
Estimates from typical gauge are usually within ±15%, because tension, hook or needle size and stitch pattern vary. The swatch mode — weighing or measuring a real swatch — is accurate to a few percent.
How much extra yarn should I buy?
Add about 10%. Add more (15–20%) for tight tension, textured stitches, borders and fringe, or when you cannot buy more of the same dye lot later.