How Much Yarn for a Baby Blanket? Yardage by Size and Yarn Weight
For a 30 × 35 inch stroller blanket in worsted-weight yarn worked in double crochet, budget about 1,000–1,150 yards — which is roughly three 364-yard skeins, with the third one only partly used.
That is the short answer, and it is an estimate. Every yardage number you will ever read for a blanket is an estimate, because the amount of yarn a blanket eats depends on your gauge and your stitch, and no chart knows either. What follows is the chart, and then the method, so you can work out a size the chart doesn’t cover.
Yardage chart — worsted weight (4), double crochet
The most common combination by a long way.
| Blanket size | Inches | Square inches | Estimated yards | 364-yd skeins |
|---|---|---|---|---|
| Lovey | 14 × 14 | 196 | 190–220 | 1 |
| Preemie | 18 × 24 | 432 | 410–480 | 2 |
| Receiving | 30 × 30 | 900 | 860–990 | 3 |
| Stroller | 30 × 35 | 1,050 | 1,000–1,150 | 3 |
| Swaddle | 40 × 40 | 1,600 | 1,520–1,760 | 5 |
| Crib | 36 × 52 | 1,872 | 1,780–2,060 | 6 |
| Toddler | 42 × 52 | 2,184 | 2,070–2,400 | 7 |
Always buy one skein more than the table says, in the same dye lot. A skein you didn’t need can go back or become a matching hat. A skein you did need, three weeks later, in a different dye lot, ruins the blanket.
The method: yards per square inch
This is the part worth learning, because it works for any size, any stitch and any yarn.
Yards needed ≈ width × height × the factor below.
| Yarn weight | Typical name | Yards per square inch (double crochet) |
|---|---|---|
| 2 — Fine | Sport, baby | ~1.55 |
| 3 — Light | DK, light worsted | ~1.30 |
| 4 — Medium | Worsted, aran, afghan | ~0.95 |
| 5 — Bulky | Chunky | ~0.65 |
| 6 — Super Bulky | Super chunky | ~0.45 |
Then adjust for the stitch you are actually using:
| Stitch | Multiply by |
|---|---|
| Single crochet | 1.5 — dense, uses far more yarn than people expect |
| Half double crochet | 1.2 |
| Double crochet | 1.0 — the baseline above |
| Treble crochet | 0.85 |
| Granny square / open lacework | 0.7 |
| Bobble, puff, cable, any raised texture | 1.4–1.8 — textured stitches are yarn-hungry |
Worked example. A 30 × 35 stroller blanket in DK, in single crochet: 30 × 35 = 1,050 square inches. 1,050 × 1.30 (DK) = 1,365. × 1.5 (single crochet) = about 2,050 yards.
Note how far that is from the worsted double-crochet number for the same blanket. The size is identical. The yarn is doubled. This is why one-number-per-size charts mislead people.
Where these factors come from, honestly
They are derived from the standard gauge ranges the Craft Yarn Council publishes for each yarn weight, converted to yarn consumed per unit of area. They are planning estimates with roughly a ±15% spread, not measurements of your specific yarn.
Three things move the number and none of them are in any chart:
- Your tension. A tight crocheter can use 20% more yarn than a loose one on the same pattern.
- The border. A four-round shell or ruffle border on a crib blanket can add 150–250 yards on its own. Budget for it separately; do not assume it is inside the estimate.
- Colour changes. Every colour change costs a tail to weave in. Ten stripes is not much. Sixty rows of alternating colour is real yardage.
The 10-minute way to know for certain
If the blanket is important, stop estimating.
- Crochet a swatch 6 × 6 inches in your yarn, hook and stitch.
- Pull it out and measure the yarn it used. (Easiest way: weigh the swatch on a kitchen scale, then use the skein’s stated weight-to-yardage ratio. A 100 g / 364 yd skein is 3.64 yards per gram.)
- Divide by 36 to get yards per square inch, for your hands.
- Multiply by your blanket’s square inches. Add 15%.
That takes ten minutes and it is the only number on this page that is actually about your project.
What most yardage guides get wrong
They give one number per blanket size with no stitch stated. A single crochet blanket and a granny square blanket of identical dimensions differ by more than a factor of two. A yardage number without a stitch attached is not information.
They quote skeins, not yards. “Three skeins” means nothing across brands — skeins run from 170 to 1,000+ yards. Always convert to yards before comparing anything.
They forget the border. Consistently.
Frequently asked questions
How many skeins is a baby blanket? For the common case — 30 × 35 inches, worsted weight, double crochet, 364-yard skeins — three, and buy a fourth. Across other yarns the skein count is meaningless; work in yards.
Is it cheaper to buy one large skein or several small ones? Usually the large one, and it also reduces dye-lot risk and the number of ends to weave in. The downside is that if you run short, you must buy another large skein.
What if I run out mid-blanket? If it is the same dye lot, join and carry on. If it is not, do not join it invisibly — the shift will show as a band. Instead, use the new lot for a deliberate stripe section or the border so it reads as a design choice.
How much yarn for a baby blanket in bulky yarn? Multiply the square inches by about 0.65. A 30 × 35 blanket comes out around 680 yards in double crochet. Bulky blankets work up fast but are heavy and less suitable for a pram.
Does the colour affect yardage? No, but the dye lot does affect whether it matches. Buy it all at once.