The number of granny squares needed to make a blanket depends on the size of the blanket you want and the size of each granny square you make.
How to Calculate the Number of Granny Squares
- Measure your granny square : For example, if your granny square is 5 inches by 5 inches.
- Decide your blanket size : For instance, a blanket 60 inches wide by 75 inches long.
- Divide blanket dimensions by square size :
- Width: 60 ÷ 5 = 12 squares across
- Length: 75 ÷ 5 = 15 squares down
- Multiply rows by columns : 12 × 15 = 180 squares total
You can round up if the division is not exact to ensure full coverage
Typical Examples
- A baby blanket (about 42" square) with 6-inch squares might need around 49 squares (7x7)
- A throw blanket (around 48" x 66") with 5-inch squares might require about 88 to 132 squares (8x11 to 11x12)
- A queen-size blanket (around 90" x 90") with 6-inch squares might need 225 squares (15x15)
- A king-size blanket (around 108" x 100") with 6-inch squares might need about 288 squares (18x16)
Adjustments
- If you want fewer squares, you can make larger granny squares by adding rounds.
- Borders and joining methods can add extra inches, so you might adjust the number of squares accordingly
- Yarn weight, hook size, and tension affect square size, so always measure your actual squares before calculating
Summary Table (Approximate)
Blanket Size| Square Size| Squares Across| Squares Down| Total Squares
---|---|---|---|---
Baby Blanket (~42")| 6"| 7| 7| 49
Throw (~55" x 60")| 5"| 11| 12| 132
Queen (~90" x 90")| 6"| 15| 15| 225
King (~108" x 100")| 6"| 18| 16-17| ~288
By measuring your granny square and desired blanket dimensions, then dividing and multiplying as above, you can determine how many granny squares you need for any blanket size
