Granny Square Blanket Size Chart: How Many Squares You Need

Computer drawing, not a photo: the 6 sizes to the same scale, each little tile is one 6-in granny square.

Short answer: with 6-in granny squares you need about 30 for a baby blanket (5 x 6), 80 for a throw (8 x 10), 165 for a twin (11 x 15), 195 for a full (13 x 15), 255 for a queen (15 x 17) and 306 for a king (18 x 17). The size chart below gives the count for 6 blanket sizes and 4 square sizes.

The rule is simple: squares across = blanket width ÷ square size, squares down = blanket length ÷ square size, each rounded to the nearest whole square. Multiply the two and you have your count.

Your own tension decides the size of your square, so make one square first, block it, measure it side to side, then use the line of the chart closest to it. Yarn amounts are estimates for worsted weight, with a 20 % margin.

The square is written out below, round by round up to Round 10, with the size after each stopping point. Every round was checked by our stitch simulator.

Blanket sizes: Baby 30 x 36 in, throw 50 x 60, twin 66 x 90, full 80 x 90, queen 90 x 100, king 108 x 100 (common targets; sizes vary between sources)
Square sizes: About 5 in (4 rounds), 6 in (5 rounds), 8 1/4 in (7 rounds), 11 1/2 in (10 rounds)
Yarn: Worsted weight (#4); amounts are estimated, with a 20 % margin
Hook: US H-8 (5.0 mm), the suggested hook for a 6-in 5-round square
Joining: Slip-stitch seam, then a 2-round sc border (about 1/2 in on each side): 1 sc in each st and sp, 21 per edge of a 6-in square

Granny square blanket size chart

Baby blanket — 30 x 36 in

5-in squares (4 rounds): 6 x 7 = 42 squares · about 30 1/2 x 35 1/4 in with the border · about 850 yd of worsted · about 12 hours (estimated)
6-in squares (5 rounds): 5 x 6 = 30 squares · about 31 x 37 in with the border · about 850 yd of worsted · about 12 hours (estimated)
8 1/4-in squares (7 rounds): 4 x 4 = 16 squares · about 33 3/4 x 33 3/4 in with the border · about 850 yd of worsted · about 12 hours (estimated)
11 1/2-in squares (10 rounds): 3 x 3 = 9 squares · about 35 1/2 x 35 1/2 in with the border · about 900 yd of worsted · about 13 hours (estimated)

Throw — 50 x 60 in

5-in squares (4 rounds): 10 x 12 = 120 squares · about 50 x 59 3/4 in with the border · about 2,250 yd of worsted · about 32 hours (estimated)
6-in squares (5 rounds): 8 x 10 = 80 squares · about 49 x 61 in with the border · about 2,200 yd of worsted · about 32 hours (estimated)
8 1/4-in squares (7 rounds): 6 x 7 = 42 squares · about 50 1/4 x 58 1/2 in with the border · about 2,100 yd of worsted · about 30 hours (estimated)
11 1/2-in squares (10 rounds): 4 x 5 = 20 squares · about 47 x 58 1/2 in with the border · about 1,950 yd of worsted · about 28 hours (estimated)

Twin — 66 x 90 in

5-in squares (4 rounds): 13 x 18 = 234 squares · about 64 3/4 x 89 1/4 in with the border · about 4,350 yd of worsted · about 62 hours (estimated)
6-in squares (5 rounds): 11 x 15 = 165 squares · about 67 x 91 in with the border · about 4,500 yd of worsted · about 64 hours (estimated)
8 1/4-in squares (7 rounds): 8 x 11 = 88 squares · about 66 1/2 x 91 1/4 in with the border · about 4,300 yd of worsted · about 62 hours (estimated)
11 1/2-in squares (10 rounds): 6 x 8 = 48 squares · about 70 x 93 in with the border · about 4,500 yd of worsted · about 65 hours (estimated)

Full — 80 x 90 in

5-in squares (4 rounds): 16 x 18 = 288 squares · about 79 1/2 x 89 1/4 in with the border · about 5,350 yd of worsted · about 75 hours (estimated)
6-in squares (5 rounds): 13 x 15 = 195 squares · about 79 x 91 in with the border · about 5,250 yd of worsted · about 75 hours (estimated)
8 1/4-in squares (7 rounds): 10 x 11 = 110 squares · about 83 x 91 1/4 in with the border · about 5,400 yd of worsted · about 77 hours (estimated)
11 1/2-in squares (10 rounds): 7 x 8 = 56 squares · about 81 1/2 x 93 in with the border · about 5,250 yd of worsted · about 76 hours (estimated)

Queen — 90 x 100 in

5-in squares (4 rounds): 18 x 20 = 360 squares · about 89 1/4 x 99 in with the border · about 6,650 yd of worsted · about 94 hours (estimated)
6-in squares (5 rounds): 15 x 17 = 255 squares · about 91 x 103 in with the border · about 6,850 yd of worsted · about 98 hours (estimated)
8 1/4-in squares (7 rounds): 11 x 12 = 132 squares · about 91 1/4 x 99 1/2 in with the border · about 6,450 yd of worsted · about 92 hours (estimated)
11 1/2-in squares (10 rounds): 8 x 9 = 72 squares · about 93 x 104 1/2 in with the border · about 6,700 yd of worsted · about 97 hours (estimated)

King — 108 x 100 in

5-in squares (4 rounds): 22 x 20 = 440 squares · about 108 3/4 x 99 in with the border · about 8,100 yd of worsted · about 114 hours (estimated)
6-in squares (5 rounds): 18 x 17 = 306 squares · about 109 x 103 in with the border · about 8,200 yd of worsted · about 117 hours (estimated)
8 1/4-in squares (7 rounds): 13 x 12 = 156 squares · about 107 1/2 x 99 1/2 in with the border · about 7,600 yd of worsted · about 109 hours (estimated)
11 1/2-in squares (10 rounds): 9 x 9 = 81 squares · about 104 1/2 x 104 1/2 in with the border · about 7,550 yd of worsted · about 109 hours (estimated)

✓ CookZya original design · Stitch counts checked round by round — Stitch counts checked round by round; square sizes, counts, yarn and hours are estimates from a suggested gauge, not a tested sample.

Materials

Color A — worsted weight yarn (#4), any color — this line is for ONE 6-in square; blanket totals are in the size chart, about 21 yd
Yarn for one square, about: 14 yd (4 rounds), 21 yd (5 rounds), 38 yd (7 rounds), 73 yd (10 rounds), before the margin.
Totals are for a one-color blanket; with color changes, like our Easy Granny Square Blanket (880 / 2,220 / 4,510 yd for the baby, throw and twin), plan a little more for the extra ends.
Yarn needle, scissors, a ruler or tape measure.

Notes

US crochet terms. ch = chain, sl st = slip stitch, dc = double crochet, sc = single crochet, sp = space, rep = repeat, Rnd = round.
How to measure: block your square, lay it flat without stretching and measure from one edge to the opposite edge, through the middle (not corner to corner).
A group = 3 dc in the same space. A corner = (3 dc, ch 2, 3 dc) in a ch-2 corner space.
Rounded counts: when the width does not divide evenly, the chart rounds to the nearest whole square, so the finished size can be up to about 5 1/2 in off the target; it is given on every line.
Square sizes come from our suggested gauge (a 5-round square = about 6 in, then a little over 1 in more per extra round). If your square is bigger or smaller, use the rule: width ÷ your square, length ÷ your square.

The size chart in pictures

$How many granny squares for a throw: 50 divided by 6 is 8 squares across, 60 divided by 6 is 10 down, 80 squares$

The rule on a throw: 50 ÷ 6 ≈ 8 across, 60 ÷ 6 = 10 down, 80 squares — a computer drawing.

Square size by round (round numbers in the top-left corners), estimated with worsted and a US H-8 hook — a computer drawing.

Granny square in any size

One color, worked with the right side facing you; you never turn. Stop after the round your chart line asks for.

Finishing

Weave in the ends and block every square to the same size. Lay the squares out as the chart says (across x down), join them with a slip-stitch seam, then work 2 rounds of sc around the whole blanket, 3 sc in each corner.

Design notes

Round n has n groups on each side, 12 x n dc in all: that is why each round adds about the same width.
Bigger squares mean fewer squares and fewer seams, but each square takes longer.
The chart sizes are targets: crocheters use different sizes for the same name, so pick the line that fits your bed or sofa.

Tips for planning a granny square blanket

Measure the bed or the person: a throw should reach from shoulders to feet on the sofa.
Make and block 1 square before you buy all the yarn, then read your line of the chart.
Buy all the yarn from the same dye lot and add a skein for the border.
Lay all the squares on the floor before joining: it is the moment to move colors around.

Common mistakes

Measuring corner to corner: the diagonal is about 1.4 times the side, so you would make too few squares.
Measuring before blocking: squares often grow a little when blocked.
Mixing squares worked by different people or hooks without checking that they are the same size.
Forgetting the border in the finished size: 2 rounds of sc add about 1 in to the width and to the length.

Make it your own

Rectangle in any size: pick your own width and length and apply the rule.
Lapghan or lovey: 3 x 3 squares of 10 rounds, or 2 x 2 squares for a security blanket.
Wider border: each extra sc round adds about 1/4 in on every side.

Care

Follow the yarn label; acrylic blankets can usually go in the washing machine on a gentle cycle.

More granny square patterns

How to Crochet a Granny Square — new to granny squares? Start here, one picture per round
Easy Granny Square Blanket — a full blanket pattern in 3 sizes, with the joining and the border
Christmas Granny Square Blanket — the same 6-in square in red, green and gold
Daisy Granny Square Blanket — a flower granny square blanket
Winter Snowflake Granny Square Blanket — a throw of 99 granny squares that draw one big snowflake
Granny Square Christmas Tree Ornament — a quick project with 3 small squares

FAQ

How many granny squares do I need for a blanket?

With 6-in granny squares you need about 30 for a baby blanket (5 x 6), 80 for a throw (8 x 10), 165 for a twin (11 x 15), 195 for a full (13 x 15), 255 for a queen (15 x 17) and 306 for a king (18 x 17). The size chart lists the other square sizes.

How big is a granny square?

With worsted yarn and a US H-8 hook, a 5-round square is about 6 in and each extra round adds a little over 1 in (11 1/2 in at 10 rounds). Your tension decides: always measure your own square.

How many granny squares for a throw blanket?

About 80 squares of 6 in (8 x 10) for a 50 x 60 in throw; see the Throw card of the chart for the other square sizes.

How much yarn do I need for a granny square blanket?

For a throw with 6-in squares, about 2,200 yd of worsted weight yarn (an estimate with a 20 % margin), including the seams and a 2-round border.

What size granny square is best for a blanket?

There is no single best size: 6-in squares (5 rounds) are quick to finish and easy to carry; bigger squares mean fewer squares and fewer seams but longer rounds.

Granny Square Blanket Size Chart: How Many Squares for Every Size