A standard king size bed typically measures 76 inches wide by 80 inches long (about 193 cm by 203 cm).

Below is a concise, article-style answer following your post structure.

What Are the Measurements of a King Size Bed?

Quick Scoop

If you’re wondering “what are the measurements of a king size bed” , here’s the fast answer:
A standard king (often called an Eastern king) is 76" wide × 80" long (about 193 cm × 203 cm).

That’s basically two twin XL mattresses side by side in terms of width, giving couples lots of elbow room and space for kids or pets.

Standard King Size Bed Measurements

  • Width: 76 inches (about 193 cm).
  • Length: 80 inches (about 203–203.5 cm).
  • Recommended minimum room size: around 12 ft × 12 ft so you have walking space around the bed.

A king is generally the widest standard mattress size sold in regular US/Canada stores, with California king being a different, longer variant.

King vs California King (Common Follow‑Up)

Many people asking “what are the measurements of a king size bed” also bump into California king while shopping.

Bed type Width (inches) Length (inches)
Standard King 76″ 80″
California King 72″ 84″
Standard king: wider, slightly shorter — great if you want maximum side‑to‑side space.

California king: a bit narrower but longer — better if you’re tall and your feet hang off shorter beds.

Mini “Forum Style” Notes You’d See in Discussions

“Measure your room first. A king is 76×80, but you also need at least 30 inches of clearance on the sides so the room doesn’t feel cramped.”

“For bedding, just look for ‘king’ on sheets and duvets. They’re made for the 76×80 size, so you don’t have to custom order anything.”

Common quick tips:

  1. Check doorways, stairwells, and hall turns so the mattress can actually get into the bedroom.
  1. Make sure you can open drawers/doors (closets, nightstands) with a king in place.
  1. If your room is smaller than about 12×12 feet, consider a queen (60×80) instead to keep more floor space free.

TL;DR

  • Standard king size bed: 76" wide × 80" long (approx. 193 cm × 203 cm).
  • Best for: couples and families who want maximum width, typically in a master bedroom.
  • If you’re very tall or have a long, narrow room, check out California king: 72" × 84".

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