Granny Square Color Generator

How the layouts are built

Every layout here is a rule for filling a grid of W squares across by H squares down, and each rule solves a different problem.

• Random fills each cell with a random color, but rejects a color that already sits directly above or to the left of the cell. That one constraint is what stops the “why do I have four pink squares touching” effect you get from genuinely random placement.
• Balanced mix takes the opposite approach: it builds a list containing each color the same number of times, shuffles it, and deals it out. Every color ends up used within one square of every other, which is what you want when you are working from equal-sized skeins.
• Diagonal assigns colors by (row + column) mod n, which produces stripes running corner to corner. Checkerboard uses (row + column) mod 2 against the first two colors. Gradient maps the row number across the color list in order, so the blanket fades top to bottom. Concentric assigns by distance from the edge, giving rings.

Whatever rule you pick, the legend counts the squares of each color from the finished grid — including any squares you clicked and overrode by hand — so the counts always match what is on screen rather than what the rule intended.

A worked example

Say you want a throw in the Meadow palette: rose, mint, warm white and dark teal. Set the grid to the Throw (8 × 10) preset and choose balanced mix.

• Total squares: 8 × 10 = 80.
• Four colors, balanced: 80 ÷ 4 = 20 squares of each color. The legend will read 20 / 20 / 20 / 20.
• Finished size: a granny square worked to 6 inches, joined with a single-crochet seam, sits at about 6.25 inches of pitch. So 8 across = 50 inches and 10 down = 62.5 inches, before the border.
• Yarn: a 6-inch worsted granny square runs roughly 22–28 yards. At 25 yards × 20 squares that is about 500 yards per color, so one 364-yard skein per color will not do it — plan on two, or on 3 colors × 27 squares if you would rather buy three skeins and use one twice.

Change the count to 5 colors and the arithmetic stops being tidy: 80 ÷ 5 = 16 exactly, fine — but 6 colors gives 13.33, so the tool deals 14 squares of some colors and 13 of others and the legend shows you which. That is the number to shop from, not the average.

Questions people ask

How do I pick colors for a granny square blanket?

Choose 3–6 colors that share a similar tone, add one contrast color, and lay them out before crocheting. This generator previews random, diagonal, checkerboard, gradient, concentric and balanced-mix layouts so you can compare arrangements instantly.

What layout patterns can I preview for a granny square blanket?

Six arrangements: random (avoids same-color neighbors), diagonal stripes, checkerboard, gradient, concentric rings, and balanced mix (every color used equally, shuffled). You can also click any square to override its color.

How do I know how many squares of each color to make?

Generate a layout you like, then check the legend — it counts the squares per color automatically, and both the PNG export and the printable plan include the counts so you can take them yarn shopping.

How many granny squares do I need for a blanket?

Multiply the squares across by the squares down. A throw laid out 8 squares wide by 10 squares tall is 80 squares. To turn that into inches, multiply by your finished square size plus the join: a 6 inch square joined with a single crochet seam sits at roughly 6.25 inches of pitch, so 8 across is 50 inches wide and 10 down is 62.5 inches long, before any border.

How many colors should a granny square blanket use?

Three to six. Two reads as a stripe rather than a scrap blanket, and past six the eye stops seeing a scheme and starts seeing noise. A reliable recipe is three colors of similar value, one much lighter neutral to give the eye somewhere to rest, and at most one high-contrast accent used in under a fifth of the squares.