Yarn Calculator
How much yarn do I need? Enter your project below and get an instant answer in yards, meters, and skeins — based on your stitch, size, and yarn weight.
- Free, no sign-up
- Crochet & knitting
- Yardage in yards + meters + skeins
How the yarn calculator works
The calculator uses published yarn consumption rates for each stitch type and yarn weight, cross-referenced with standard project dimensions. Here's the math behind it:
- Base rate per square inch — each stitch/yarn-weight combination has a known yarn consumption rate (yards per square inch of finished fabric). Single crochet in worsted weight uses roughly 3× more yarn per square inch than double crochet in the same weight.
- Project area — your project's dimensions determine total square inches.
- Total yardage — area × rate = estimated yards. We convert to meters (×0.9144) and skeins (÷ yards per skein for your weight).
For the most accurate result, crochet a 4-inch swatch with your actual yarn and stitch, weigh it, then scale up. But if you're at the yarn shop right now trying to decide between 4 or 6 skeins — this calculator gives you a solid answer.
Crochet yarn calculator by project
Here are typical yardage ranges for common projects in worsted weight (#4) yarn:
| Project | Size | Yards (sc) | Yards (dc) |
|---|---|---|---|
| Baby blanket | 30×36 in | 900–1,200 | 600–800 |
| Throw blanket | 50×60 in | 1,800–2,200 | 1,200–1,600 |
| Scarf | 8×70 in | 350–450 | 250–350 |
| Hat (adult) | — | 200–250 | 150–200 |
| Sweater (M) | — | 1,000–1,400 | 800–1,100 |
Yarn yardage calculator: how to verify
The best way to verify your estimate is the swatch method: crochet a 4×4 inch swatch in your chosen stitch and yarn, then weigh it on a kitchen scale. Multiply the weight by your project's total area ÷ 16 (the swatch area), then divide by your yarn's yards-per-gram (on the label). This gives you exact yardage for your specific tension and stitch — every crocheter's tension is slightly different.
Yarn weight chart: what the numbers mean
Yarn weight (thickness) directly affects how much yardage you need — thinner yarn (lower number) requires more yards for the same size project:
| Weight # | Name | Typical yd/skein | Relative yarn needed |
|---|---|---|---|
| 1 | Lace / Thread | 400–500 | 2.5× more |
| 2 | Sport / Fine | 300–350 | 1.8× more |
| 3 | DK / Light | 250–300 | 1.4× more |
| 4 | Worsted / Medium | 200–220 | Baseline |
| 5 | Bulky / Chunky | 140–160 | 0.7× less |
| 6 | Super bulky | 80–100 | 0.5× less |
Frequently asked questions
How much yarn do I need for a blanket?
A baby blanket (30×36 in) needs 800–1,200 yards in single crochet, or 600–800 in double crochet. A throw (50×60 in) needs 1,500–2,200 yards. Use the calculator above for your specific stitch and yarn weight.
How do I calculate yarn yardage without a pattern?
Crochet a 4×4 inch swatch, weigh it on a kitchen scale, then multiply to your project size. Or use the calculator above which estimates based on published consumption rates for each stitch and yarn weight.
How many skeins of yarn do I need?
Divide your total yards by the yards-per-skein printed on the yarn label. For example, 1,200 yards ÷ 200 yards/skein = 6 skeins. Always buy one extra for dye-lot safety.
Does C2C use more yarn than regular crochet?
Yes, C2C (corner-to-corner) typically uses 20–30% more yarn than flat double crochet for the same finished size, because each block is 3 double crochets plus chain stitches.
Is this yarn calculator accurate?
Estimates are ±20% because every crocheter's tension is different. For maximum accuracy, use the swatch method described above. For shopping decisions, the calculator is more than close enough.