A standard twin blanket typically measures about 65 inches wide by 90 inches long (165 cm by 229 cm). This size provides enough coverage to fit a twin mattress (usually 38" x 75") with some overhang on the sides and foot of the bed, making it suitable for single sleepers or twin XL beds as well

. Some sources note a slight variation, with twin blankets ranging from 60" x 80" to 66" x 90", but the most common and widely accepted dimension is approximately 65" x 90"

. This size balances warmth and coverage without being too large for the narrower twin bed. In summary:

• Twin blanket size: ~65" x 90" (165 cm x 229 cm)
• Fits twin and twin XL beds well
• Provides adequate side and foot overhang for comfort

This makes twin blankets ideal for children, teens, single adults, or dorm rooms where twin or twin XL beds are common