Standard blanket, quilt & mattress sizes

Key takeaway: A common US queen mattress is about 60×80 inches; quilt and knit/crochet blanket sizes are craft conventions that vary by pattern. Use these tables as starting points in the quilt size and yarn blanket calculators.

Last reviewed 2026-11-07

These tables are planning aids. Knit/crochet blanket and quilt-top sizes are craft conventions that vary by pattern. Mattress sizes below are common US retail rounded dimensions; industry finished-mattress specs (ISPA) are often about ½″ shorter and list full/double finished width as 53″ rather than the 54″ retail figure many shops quote. Always confirm your pattern and your mattress before cutting.

Knit / crochet blanket sizes (inches)

Common knit and crochet blanket finished sizes
Name	Width	Length
Lovey / security	12	12
Stroller	30	35
Receiving / baby	30	36
Crib	36	52
Throw	50	60
Twin blanket	66	90
Full / double blanket	80	90
Queen blanket	90	100
King blanket	108	100

Common quilt top sizes (inches)

Common quilt top finished sizes
Name	Width	Length
Baby quilt	36	52
Crib quilt	36	54
Throw quilt	50	65
Twin quilt	64	86
Full quilt	78	88
Queen quilt	84	92
King quilt	100	92
California King quilt	96	104

US mattress sizes (inches)

Common US retail mattress dimensions (rounded)
Name	Width	Length
Crib mattress	28	52
Twin	38	75
Twin XL	38	80
Full / Double	54	75
Queen	60	80
King	76	80
California King	72	84

How to use these sizes with FiberCalc tools

Pick a target top size (or mattress plus desired drop), then use the quilt size calculator to fit blocks, sashing, and borders. Add overhang in the backing calculator (default 4″ per side for longarm prep). Convert the finished perimeter into binding strips with the binding calculator. Knit/crochet makers estimating yarn for a throw-sized blanket can enter the blanket table dimensions in the yarn blanket calculator.

Worked example: queen bed quilt

A common US queen mattress is about 60×80″. A quilt top near 84×92″ leaves roughly 12″ of total side drop and 12″ of foot drop before accounting for mattress height and tuck—adjust for your bed and preference. Backing for an 84×92″ top with 4″ overhang needs about 92×100″ of fabric coverage before panel seams; binding uses perimeter 2 × (84 + 92) = 352″ plus join waste.

Common mistakes

Buying fabric for the mattress size instead of the finished quilt top plus overhang.
Treating knit “throw” and quilt “throw” labels as identical inch measurements—they often differ.
Ignoring pillow tuck or mattress depth when planning drop.
Assuming ISPA finished specs and retail labels always match to the inch (especially full/double width).

Sources

US mattress dimensions as commonly published in bedding retail charts; industry context via the International Sleep Products Association (checked 2026-11-07). Retail rounded sizes shown here may differ slightly from ISPA finished mattress specs.
Quilt and craft blanket ranges reflect widespread pattern conventions; always confirm your pattern.