Download the AppGranny Square Planner, Design Crochet Patterns Visually
Build colorful granny square layouts with custom rows, columns, and rounds. Generate, edit, shuffle, and export crochet color patterns in minutes.So you stop second-guessing color combinations and start crocheting with a plan.
Download Yarnzy on iOS & AndroidTip · A 6″ square in worsted weight uses about 22 yards. Smaller squares mean more pieces but a denser, drapier blanket.
Whip stitch is the most popular finishing seam — nearly invisible from the front, with about 0.15 yd per inch of seam.
Frames the blanket and hides irregular edges
Override the yarn-weight estimate with your own swatch count
Round up to whole skeins and show the total cost
Divide squares evenly across 2–8 colors
8 × 10 = 80 squares
Breakdown
Your inputs never leave this device.
See a granny-square blanket come together.
A worked example with real numbers. Plan a 50″ × 60″ throw from 6″ worsted squares — square count, yardage, skein total, all the way to a four-color split.
50 in (8 squares)
60 in (10 squares)
8 × 10 = 80 squares
50" × 60" throw, 6" worsted squares, four colors evenly distributed.
Step 01 · Grid
How many squares fit in each direction?
Divide each dimension by your square size and round to whole squares. Eight across, ten down, eighty squares total.
Step 02 · Yarn per square
Pick the right yardage factor.
Worsted-weight squares average 0.61 yards per square inch. Multiply by the square area for the per-square estimate. Lighter weights take more yards per square inch; bulky takes less.
Step 03 · Total yardage
Multiply squares by yards.
Add joining and border yardage on top if you're using them. A whip-stitch join at 0.15 yd / in adds about 80 yards for this size; a 3-round border adds about 230 more.
Step 04 · Skeins & split
Round up, then divide by color.
Always round up to whole skeins per color. Buy them all at once from the same dye lot to avoid stripes that aren't supposed to be there.
How to Use the Granny Square Planner
Three simple steps take you from blank grid to a finished color plan — no second-guessing needed.
01
Set your grid and rounds
Choose your rows, columns, and how many color rounds each square contains. A 10×12 grid gives 120 squares — one setting defines your entire blanket size and structure.
02
Build your palette and generate
Add your yarn colors and explore granny square color ideas. Then tap Generate Pattern to instantly create a randomized layout — your personal granny square color generator.
03
Preview and start crocheting
Follow the visual color map square by square as you crochet. No stopping to decide what color comes next or losing track of your arrangement mid-project.
Frequently Asked Questions
Quick answers on square sizes, color planning, and laying out your next granny square blanket.
Standard granny squares measure 4 to 6 inches (10–15 cm). Baby blankets suit 4-inch squares; throws work best with 6-inch squares. Your yarn weight and hook size affect the final size. Use the Granny Square Planner to map out dimensions before you start.
More tools from Skein.
A free toolkit for everything you measure, swatch, or substitute. No sign-up required.
Open tool →Yarn Substitution
You found the perfect pattern. Now find the yarn that actually works for it. Enter your yardage and weight and get the exact skein count before you buy anything.
Open tool →Hook & Needle Chart
US, UK, metric, all three systems in one place. Find your hook or needle size and see exactly which yarn weight it pairs with, no conversion guessing needed.
Open tool →Unit Conversion
Switch between meters, yards, grams, and ounces instantly. Whether your pattern is American or European, your measurements always make sense.
Open tool →Stitch Calculator
Know your gauge, know your finished width. Enter both and get the exact cast-on stitch count your project needs, no math, no margin for error.
Ready to Design Your Next Granny Square Blanket
Your next granny square blanket starts with a plan, not a guess. Set your grid, pick your colors, generate your layout, and start crocheting with a pattern you actually designed yourself.
Built for crocheters & knitters • Accurate layouts • Beginner friendly
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Start your next project with confidence