A typical twin size blanket is about 65–66 inches wide and 90 inches long, designed to cover a standard twin mattress with some overhang on the sides and foot of the bed.

Standard twin blanket size

  • Most guides list a twin blanket around 65–66 inches wide by 90 inches long.
  • This size works well for the common twin mattress size of 38 by 75 inches, giving you drape on each side and enough length to tuck in at the bottom.

Common size range

  • Some brands describe a range rather than a single measurement, usually 65–70 inches wide and 90 inches long.
  • These small variations depend on the manufacturer, but anything in that range will generally be marketed as a twin size blanket.

Twin vs other blanket sizes

Blanket type| Typical dimensions (inches)| Notes
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Throw| 50 x 60| Smaller than twin; meant for couches and casual use, not full bed coverage.59
Twin| 65–66 x 90| Sized for standard twin and often twin XL beds.1579
Full/Double| 85 x 90| Wider than twin to cover a full-size mattress.59

Fit on twin and twin XL

  • The 90‑inch length is enough to cover both regular twin (38 x 75) and twin XL (38 x 80) mattresses in most cases.
  • For taller sleepers who like extra tuck or drape, some opt for a full/double blanket instead for more coverage.

Quick buying tips

  • Check the product label for exact measurements rather than relying only on the “twin” tag, since sizes can vary by a few inches.
  • If you plan to tuck the blanket tightly or layer it over a thick comforter, consider the upper end of the width range (near 70 inches) for more coverage.