What size throw blanket should I buy?

For one adult on a couch, 50"x60" to 50"x70" is the standard and what most of the top-rated picks come in. If you want to share with a partner or fully cover a queen bed as a decorative layer, look for 60"x80" or larger oversized options. Chunky knit decorative throws at 30"x40" are styling pieces, not blankets you'd actually wrap up in.