Quilt size chart

Start with the mattress, then choose how far the quilt should fall. A bed name alone does not determine the finished quilt size.

Quilt Size Chart

Measurements

Quilt fit

Edit measurementsAwaiting calculation

Enter your measurements

Calculate to draw your layout.

Browser-only draft. Export or print to keep a copy.

US mattress sizes are a starting point

Nominal US mattress dimensions are references, not quilt standards. Measure your actual bed.

Nominal US mattress reference dimensions, in inches
Mattress	Width	Length
Twin	38	75
Twin XL	38	80
Full	54	75
Queen	60	80
King	76	80
California king	72	84

Source: Sleep Foundation, checked October 25, 2026; article updated July 11, 2025.

What size quilt for a queen bed?

A 60 × 80-inch queen mattress with 12-inch side and foot drops needs an 84 × 92-inch quilt. Adding 8 inches at the head makes it 84 × 100. These are calculated examples, not universal queen quilt sizes.

Translate the target into a buildable top

Width = mattress width + 2 × drop. Length = mattress length + drop + head allowance. One drop setting applies to sides and foot.

Use the block grid and borders to reach the target. Construction and shrinkage allowances are separate.

Size the other layers separately

Confirm overhang on the actual bed. Calculate backing and batting with their own working allowances.

Sources and further reading

Sleep Foundation: nominal US mattress dimensions

Last reviewed 2026-10-25.

Questions about this calculation

Are the displayed sizes standard finished quilt sizes?

No. The reference table contains nominal mattress sizes. The quilt result adds the drop and head allowances you choose.

Does the head allowance include a pillow tuck?

It is simply additional length at the head. Enter the amount your intended arrangement requires; the tool does not model pillows or their volume.

Can I use a custom mattress size?

Yes. Edit the mattress width and length. The formulas use those measurements rather than requiring a named bed size.