Quilt Size Calculator
Finished quilt size for any mattress, with the drop and pillow tuck you want.
Updated · How we check our maths
- Finished quilt size
- 88 × 104 in
- In centimetres
- 224 × 264 cm
- Mattress top
- 60 × 80 in
- Drop each side
- 14 in
- Allow for shrinkage
- Add 3–5% if you prewash nothing and use cotton batting
Quick answer
Quilt width = mattress width + 2 × drop and length = mattress length + drop + pillow tuck. For a queen (60 × 80 in) with a 14 in drop and 10 in tuck, make the quilt about 88 × 104 in.
What the Quilt Size Calculator does
Choose the bed, mattress depth, how far you want the quilt to hang and how much to tuck under the pillows. The calculator gives the finished size in inches and centimetres. Standard sizes vary between patterns, so sizing from your own mattress gives the best fit.
The formula
Width = mattress width + 2 × drop; Length = mattress length + drop + pillow tuck. Drop = mattress depth + 2 in to cover it, or floor height − 1 in.
Worked example
King mattress (76 × 80 in), 14 in deep, covering the mattress with a 10 in tuck: 76 + 32 = 108 × 106 in.
How to use the Quilt Size Calculator
- Pick the mattress size.
- Enter its depth.
- Choose the drop and pillow tuck.
Frequently asked questions
What size is a queen quilt?
Commonly 86–90 × 92–100 in, depending on drop and tuck.
What is a pillow tuck?
Extra length (8–12 in) folded under and over the pillows.
How big is a throw quilt?
Usually around 50 × 60 to 60 × 70 in.
Results are estimates for planning and learning. Check important figures with a qualified professional. How we build and check our calculators.