Crochet Yarn Calculator – How Much Yarn to Crochet?

Crochet uses more yarn than knitting: each stitch wraps the hook more times. These estimates start from published project ranges with the crochet allowance already applied, scale to your blanket size, and finish in skeins: the yarn amount to buy, rounded up a skein. Swapping brands is a job for the yarn substitution calculator in the related list.

Your Project

What are you crocheting?

Yarn weight

Main stitch taller stitches cover faster but wrap more

Yards per skein from the label

You Need About

3,360yards

for a throw, crocheted in single crochet

Expensive yarn? Crochet one swatch or motif, weigh it, and the swatch method replaces this whole range with your exact number.

Adjusted range2,813–3,906 yd
In meters3,070 m
Skeins16 · buy 17

The Formula

crochet yards = published knitting range × 1.25 × stitch factor · custom blankets scale by area

The quarter-more allowance is the craft’s working rule for crochet against knitting in the same yarn. The stitch factor nudges it: solid dc fabric wraps a little more, open granny clusters a little less.

Worked Example

A worsted granny-square throw, 50 × 60 in, 220 yd skeins:

Knitting range for a worsted afghan: 2,250–3,125 yd. Crocheted: × 1.25 → 2,813–3,906.
Granny clusters run open: × 0.95 → 2,672–3,711 yd; plan on about 3,200.
3,200 ÷ 220 = 14.5 → 15 skeins, buy 16, and in a granny throw, that’s spread across colors.

Crochet Yardage Chart

Lion Brand’s ranges with the 25% crochet allowance applied, in yards, sc fabric.

Project	2 Fine	3 Light	4 Medium	5 Bulky	6 Super bulky
Hat	313–406	250–313	250–281	156–250	156–188
Scarf	563–781	469–625	469–625	313–469	313–469
Shawl	563–875	500–781	469–688	438–625	438–594
Adult sweater	2,188–3,281	1,875–2,813	1,406–2,031	1,188–1,406	1,031–1,406
Baby blanket	1,563–1,875	1,406–1,563	1,250–1,406	1,094–1,250	938–1,094
Throw / afghan	4,375–4,688	3,750–4,375	2,813–3,906	2,500–2,813	2,031–2,500

Getting Closer Than an Estimate

The swatch method beats every chart: crochet a swatch in your stitch, weigh it, and the yarn yardage calculator‘s swatch tab turns it into an exact total.
One motif method for granny squares: make one square, weigh it, multiply by the square count, convert grams to yards from the label.
Buy the spare skein: dye lots at the store this month won’t match next month’s.

Assumptions and Defaults

The headline figure is the adjusted range’s midpoint; the range shows beneath it.
Custom blankets scale the afghan range by area against a 50 × 60 baseline.
Stitch factors: sc 1.0, hdc 1.05, dc 1.1, granny 0.95: working adjustments, not laboratory constants.
Skeins round up, plus the buy-a-spare line.

Crochet Yarn Questions, Answered

How much yarn does it take to crochet a blanket?

Crocheting a blanket in worsted takes about 1,250 to 1,400 yd for a baby blanket and 2,800 to 3,900 yd for a throw, with the crochet allowance included. Enter your own blanket size above, and the figure scales to match it.

How many skeins for a crochet blanket?

To find the skeins for a crochet blanket, divide the total yards by one skein’s yardage and round up, so a 3,200 yd throw in 220 yd skeins needs 15, and buying 16 gives you a margin. For blankets with color changes, weigh one finished square to split the total across your palette accurately.

Does double crochet use more yarn than single?

Double crochet uses more yarn per stitch than single crochet, because of the extra wrap, but per inch of blanket the two come out close, since dc rows cover about three times the height. Solid dc fabric uses about 10% more yarn than sc fabric, whereas lacy dc patterns come in under it.

How much yarn does one granny square take?

The easiest way to find the yarn in one granny square is to make one and weigh it: a 4 g square from a 100 g / 220 yd skein used 8.8 yd. Multiply that by the square count for an exact blanket total, and add a skein for the joins and border.

Base ranges: Lion Brand, “How Much Yarn Do You Need?”, with the 25% crochet allowance applied.