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.
Quilt Binding Calculator
Verified formula Updated Jun 2026 Private — runs on your device
Verified formula
Private
Binding needed
10.28
- Quilt perimeter
- 360
For general information only — not financial, tax, legal or medical advice. Verify before you rely on it.
How to use the Quilt Binding Calculator
The Quilt Binding Calculator works out your binding needed, along with 1 related figure in an instant. Enter quilt length and quilt 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 quilt length.
- Enter the quilt width.
- Read off your binding needed, together with quilt perimeter — the calculator updates automatically, with no button to press.
Formula
The Quilt Binding Calculator uses the formula:
Binding needed = (2 × (Quilt length + Quilt width) + 10) ÷ 36
Worked example
For example, with quilt length of 90 in and quilt width of 90 in, the binding needed is 10.28.
| Quilt length | 90 in |
|---|---|
| Quilt width | 90 in |
| Binding needed | 10.28 |
|---|---|
| Quilt perimeter | 360 |
Results are estimates for educational use, not professional advice.
Key terms explained
- Perimeter
- The total distance around the outside of a two-dimensional shape.
Frequently asked questions
Add the perimeter (twice length plus width) and about 10 inches for corners and joins, then divide by 36 for yards. A 90 × 90 inch quilt needs about 10.3 yards.
Mitred corners and joining strip ends use a little extra, and a margin avoids running short at the final seam.
Divide the total binding length by your usable fabric width, then round up to the number of strips to cut.
Common choices are 2 to 2.5 inches for double-fold binding. This calculator finds the length, not the strip width.
The Quilt Binding Calculator uses the formula: Binding needed = (2 × (Quilt length + Quilt width) + 10) ÷ 36. For example, with quilt length of 90 in and quilt width of 90 in, the binding needed is 10.28.
Enter the quilt length. Enter the quilt width. Read off your binding needed, together with quilt perimeter — the calculator updates automatically, with no button to press.
Related guides
Quilt Binding Table: Binding needed by Quilt length
Reference table of binding needed for Quilt Binding across a range of quilt length values — exact, engine-computed figures you can read off at a glance.
How to Calculate Quilt Binding: Formula, Steps & Examples
Learn how to calculate Quilt Binding — the formula explained step by step, with worked examples and a free calculator to check your answer.