Knitting Gauge Calculator
Calculate cast-on stitches and row counts with precision.
Step 1: Your Swatch Measurements
Step 2: Desired Project Dimensions
Calculation Results
Understanding Knitting Gauge
Knitting gauge is the number of stitches and rows per inch (or centimeter) in a knitted fabric. It is the single most important factor in ensuring that your finished garment fits the way it was designed. Every knitter has a unique "tension"—some knit tightly, while others knit loosely—meaning the same yarn and needles can produce different results for different people.
How to Knit a Swatch
To use this calculator effectively, you must first knit a gauge swatch:
- Cast On: Cast on about 6-8 stitches more than what the pattern suggests for a 4-inch (10cm) square.
- Knit: Work in the pattern stitch indicated (usually Stockinette) for about 4-5 inches.
- Wash and Block: This is critical. Some yarns grow or shrink significantly after washing. Measure your swatch only after it is dry.
Example Calculation
If your swatch has 20 stitches across 4 inches, your stitch gauge is 5 stitches per inch (20 / 4 = 5). If you want to knit a sweater that is 40 inches wide, you multiply the width by your gauge:
40 inches × 5 stitches per inch = 200 stitches.
Our calculator automates this process, handling decimal points and row conversions to ensure your sweater, hat, or blanket comes out the perfect size every time.
Why Gauge Matters
Missing your gauge by even half a stitch per inch can lead to disaster. Over a 40-inch chest circumference, a difference of 0.5 stitches per inch adds or subtracts 20 stitches. Depending on your gauge, that could mean the garment is 4 inches too large or too small!