Quilt Size Calculator
Calculate quilt dimensions, fabric yardage, and number of blocks needed for any bed or wall hanging quilt project.
Quilt Plan
Quilt sizing depends on your mattress size and desired drop.
Standard mattress sizes (inches / cm):
| Size | Mattress (in) | Mattress (cm) |
|---|---|---|
| Crib | 28 × 52 | 71 × 132 |
| Twin | 39 × 75 | 99 × 191 |
| Full | 54 × 75 | 137 × 191 |
| Queen | 60 × 80 | 152 × 203 |
| King | 76 × 80 | 193 × 203 |
Drop is how far the quilt hangs over the mattress sides.
- Coverlet: 8-12 in (20-30 cm) drop
- Bedspread: 18-21 in (46-53 cm) drop
Fabric calculation:
Total Blocks = (Quilt Width ÷ Block Size) × (Quilt Length ÷ Block Size)
Fabric Needed = Total Blocks × Block Size² + Seam Allowances + Backing
Add 10-15% extra for cutting waste and seam allowances. Backing fabric is typically the quilt size plus 4-8 inches on each side.