A standard king size bed is typically 80 inches (about 203 cm) long.

Quick Scoop

  • In the US and Canada, a standard king mattress usually measures 76 inches wide x 80 inches long (193 x 203 cm).
  • In many European countries and places like the Netherlands, a common king size is 180 x 200 cm , so the length there is about 200 cm (roughly 79 inches).
  • Variants like a California king are a bit longer, usually 84 inches (about 213 cm), but slightly narrower.

So if you’re asking “how long is a king size bed,” in most North American contexts the answer is 80 inches (about 203 cm) from head to toe.

Common King Sizes (HTML table)

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Region / Type Width Length Notes
Standard King (US/Canada) 76 in / 193 cm 80 in / 203 cm Most common “king” in North America.
California King 72 in / 183 cm 84 in / 213 cm Longer but narrower, popular for tall sleepers.
King (Netherlands example) 180 cm 200 cm Common European- style king size.
UK/European King (typical) ~150–165 cm ~200–203 cm Names and exact sizes vary by country.

Information gathered from public forums or data available on the internet and portrayed here.