Quilt Binding Calculator (Fabric Strip Estimator)
Binding is the final step where a raw quilt edge gets wrapped in a protective and decorative border. Finding the exact yardage ensures you neither waste fabric nor run agonizingly short on the very last stretch.
Configuration
Average Binding Requirements (2.5" Strips on 42" Fabric)
| Category | Value/Price |
|---|---|
| Twin (70x90") | 8 strips (0.6 yards) |
| Queen (90x108") | 10 strips (0.8 yards) |
| King (108x120") | 12 strips (0.9 yards) |
Estimates include the standard 12-inch join allowance. Always measure your finished top before cutting.
Technical Overview
Quilt bindings are traditionally cut cross-grain from the fabric selvage to selvage. Because joining these strips requires overlapping (often at a standard 45-degree mitered angle to reduce bulk), and turning corners requires extra slack to form the 'dog ears', standard practice mandates a 12-to-15 inch overage buffer added directly to the mathematical perimeter. For French fold (double-fold) binding, a 2.5-inch strip provides a sturdy 1/4-inch to 3/8-inch finished edge, whereas 2.25 inches creates a much tighter modern finish.
Professional Applications
- Finalizing quilt budgets
- Using up scrap stash
- Planning yardage purchases
What is Quilt Binding?
How to Cut Strips Efficiently
Best Binding Width
Scientific Formula
Perimeter = 2(W) + 2(L) | Strips = (Perimeter + Overage) ÷ Fabric WidthFrequently Asked Questions
How many strips do I need for a Queen?
A typical 90x108 Queen requires roughly 408 inches of binding. Using 42-inch workable fabric, you need 10 strips.
Can I reuse leftover fabric?
Yes! Scrap binding (sewing a multitude of leftover strips together) forms an incredibly charming 'scrappy' edge perfect for traditional or modern designs.
What is bias binding?
Fabric cut at a 45-degree angle to the selvage. It has tremendous stretch, making it the only option for quilts with curved edges, though it requires more total yardage.