Original data · computed estimates
How many granny squares for a blanket: chart by square size
A 50 × 60 inch granny square throw needs 90 squares at 6 inches, 56 squares at 8 inches, or 25 squares at 12 inches. A 45 × 60 inch crib blanket needs 80 six-inch squares, and a queen blanket needs 156 eight-inch squares. Counts are rounded up so the blanket reaches full size.
By the crochetpatterns.io editorial team · Reviewed · Editorial policy
| Blanket | Size (in) | 4 in squares | 5 in squares | 6 in squares | 8 in squares | 12 in squares |
|---|---|---|---|---|---|---|
| Receiving | 40 × 40 | 10 × 10 = 100 | 8 × 8 = 64 | 7 × 7 = 49 | 5 × 5 = 25 | 4 × 4 = 16 |
| Crib | 45 × 60 | 12 × 15 = 180 | 9 × 12 = 108 | 8 × 10 = 80 | 6 × 8 = 48 | 4 × 5 = 20 |
| Throw | 50 × 60 | 13 × 15 = 195 | 10 × 12 = 120 | 9 × 10 = 90 | 7 × 8 = 56 | 5 × 5 = 25 |
| Twin | 66 × 90 | 17 × 23 = 391 | 14 × 18 = 252 | 11 × 15 = 165 | 9 × 12 = 108 | 6 × 8 = 48 |
| Full / double | 80 × 90 | 20 × 23 = 460 | 16 × 18 = 288 | 14 × 15 = 210 | 10 × 12 = 120 | 7 × 8 = 56 |
| Queen | 90 × 100 | 23 × 25 = 575 | 18 × 20 = 360 | 15 × 17 = 255 | 12 × 13 = 156 | 8 × 9 = 72 |
| King | 108 × 100 | 27 × 25 = 675 | 22 × 20 = 440 | 18 × 17 = 306 | 14 × 13 = 182 | 9 × 9 = 81 |
How do you calculate how many granny squares you need?
Calculate how many granny squares you need by dividing the blanket width and length by the finished square size and multiplying the results.
- Block one finished square and measure it edge to edge.
- Divide the target blanket width by the square size and round up.
- Divide the target blanket length by the square size and round up.
- Multiply the two numbers — for example 9 × 10 = 90 squares for a throw with 6 inch squares.
Why does a finished granny square blanket come out larger?
A finished granny square blanket comes out larger than the chart size because counts round up to whole squares and borders add width to every edge.
To keep a blanket closer to size, round down instead and let the border make up the difference.
Which granny square size is fastest for a blanket?
Larger granny squares are fastest for a blanket because they need fewer joins. A throw uses 25 twelve-inch squares but 195 four-inch squares, which means far more seaming.
Source and method: Original computed chart by crochetpatterns.io. Method: squares across = blanket width ÷ square size, rounded up; squares down = blanket length ÷ square size, rounded up; total = across × down. Blanket sizes follow common industry conventions. Joining seams and borders add to the finished size and are not included.
Frequently asked questions
How many 6 inch granny squares make a throw?
A 50 × 60 inch throw needs 9 × 10 = 90 six-inch granny squares.
How many granny squares for a baby blanket?
A 40 × 40 inch receiving blanket needs 49 six-inch squares or 25 eight-inch squares.
Should I block squares before counting?
Yes. Block one square first, because unblocked squares often measure smaller than their finished size.