Crafting Calculations: Fabric, Yarn and Quilt Binding
Buy the right amount and avoid costly mistakes — how to work out fabric yardage, match knitting gauge, estimate yarn, and measure quilt binding for any project, with the pro's margins.
Knitting Gauge Calculator
Verified formula Updated Jun 2026 Private — runs on your device
Verified formula
Private
Stitches to cast on
200
- Stitches per inch
- 5.00
For general information only — not financial, tax, legal or medical advice. Verify before you rely on it.
How to use the Knitting Gauge Calculator
The Knitting Gauge Calculator works out your stitches to cast on, along with 1 related figure in an instant. Enter stitches per 4 inches and desired width and the result updates as you type — it is free, needs no sign-up, and runs entirely in your browser so your figures stay private.
- Enter the stitches per 4 inches.
- Enter the desired width.
- Read off your stitches to cast on, together with stitches per inch — the calculator updates automatically, with no button to press.
Formula
The Knitting Gauge Calculator uses the formula:
Stitches to cast on = Stitches per 4 inches ÷ 4 × Desired width
Worked example
For example, with stitches per 4 inches of 20 and desired width of 40 in, the stitches to cast on is 200.
| Stitches per 4 inches | 20 |
|---|---|
| Desired width | 40 in |
| Stitches to cast on | 200 |
|---|---|
| Stitches per inch | 5.00 |
Results are estimates for educational use, not professional advice.
Frequently asked questions
Divide your stitches per 4 inches by 4 for stitches per inch, then multiply by the desired width. 20 stitches per 4 inches over 40 inches is 200 stitches.
Gauge is how many stitches and rows fit in a measured square, usually 4 inches. It controls the finished size.
Your gauge depends on yarn, needles and tension. A swatch ensures the finished piece matches the intended size.
Adjust needle size to match gauge, or recalculate stitch counts using your own gauge to keep the right dimensions.
Enter the stitches per 4 inches. Enter the desired width. Read off your stitches to cast on, together with stitches per inch — the calculator updates automatically, with no button to press.
Related guides
Knitting Gauge Table: Stitches to cast on by Stitches per 4 inches
Reference table of stitches to cast on for Knitting Gauge across a range of stitches per 4 inches values — exact, engine-computed figures you can read off at a glance.
How to Calculate Knitting Gauge: Formula, Steps & Examples
Learn how to calculate Knitting Gauge — the formula explained step by step, with worked examples and a free calculator to check your answer.