Tools for Creative Crocheters

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Pattern Planner

Turn a simple swatch into project estimates for yarn, sizing and planning. Great for adapting patterns or designing your own projects.

yarn calculator

Yarn Calculator

Estimate how much yarn you’ll need before you start. Perfect for blankets, bags, garments, rugs and custom projects when you’re not following an exact pattern.

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Starting Stitch Calculator

Not sure how many chains to make? Get a starting stitch estimate based on your project size, yarn and stitch pattern.

StitchSmith Yarn Calculator

Yarn Calculator 🧶

Estimate yarn for crochet projects using project size, yarn weight, and stitch style.

How much yarn for…?
For blankets, scarves, cushion covers, hats, sweaters, cardigans, and vests.
Optional. If blank, the calculator uses the average for the selected yarn weight.
Estimated yarn weight
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Estimated length
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Balls required
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Always round up when purchasing ✅
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How much yarn for a bag…?
Enter the bag size you’d like and we will estimate how much yarn you’ll need. If you don’t want sides, enter 0 for the depth.
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How much yarn for a rug…?
Choose a shape and enter width and length. We estimate flat area and convert to yarn for your selected rug yarn.
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Note: These are estimates. Lace/openwork estimates are especially approximate because pattern density varies a lot. Very bulky stitches like spike stitches, puffs, bobbles, and heavy texture usually need more. Swatching and buying an extra ball is recommended.
StitchSmith by Hannah • Palette: rose & sage • No pattern required
StitchSmith Crochet Planning Calculators

Starting Stitch Calculator 🧶

Estimate how many stitches to start with from project size, yarn type, tension, and optional pattern repeat.

Starting Stitch Calculator

Estimate how many stitches to start with from your project size, yarn weight, and optional pattern repeat.

Raw estimate
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Suggested start
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Suggested hook
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Note: These calculators are planning tools. Swatching gives the best result, and pattern repeats may slightly change the final project size.
StitchSmith Crochet Planning Calculators

Project Planner from Your Swatch 🧶

Use your own swatch to estimate yarn, starting stitches, and rows. Swatch weight is optional.

Project Planner from Your Swatch

Use your own swatch to estimate yarn, starting stitches, and rows for a project.

Enter this with ball weight + swatch weight to estimate total yardage.
Estimated yarn
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Estimated yardage
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Starting stitches / pieces
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Approx rows
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Note: These calculators are planning tools. Swatching gives the best result, and pattern repeats may slightly change the final project size.