Bed Size Calculator

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Bed Size Calculator

Find the perfect bed size based on your height, sleeping style, and whether you’re sharing the bed. Get personalized recommendations for the most comfortable sleep experience.

inches
Average adult height is between 63-70 inches (5’3″ – 5’10”).

Important Bed Size Facts

  • The average person moves 40-60 times during sleep, so adequate space is essential for quality rest.
  • Two people sharing a full/double bed each have only 27″ of personal space—less than a baby in a crib.
  • A California King is 4″ longer but 4″ narrower than a standard King bed, making it better for taller individuals but less ideal for couples who need width.
  • The most popular bed size in the United States is the Queen, accounting for nearly 50% of all mattress sales.
  • Twin beds were originally created for hotels to maximize space while providing separate sleeping areas.
  • King-sized beds provide each sleeper with the same amount of personal space as a Twin bed.
  • The average lifespan of a quality mattress is 7-10 years regardless of size.
  • Eastern King (standard King) and Western King (California King) names originated from regional preferences in the US.
  • Oversized beds beyond California King exist but require custom bedding and frames.
  • Mattress dimensions can vary slightly (up to 1-2″) between manufacturers, especially for imported beds.

Factors Affecting Bed Size Choice

Factor Description
Sleeper Height People over 6′ tall should consider beds that are at least 80″ long (Twin XL, Queen, King, California King).
Sleeping Position Side sleepers generally need less width than stomach sleepers who often spread out. Back sleepers fall somewhere in between.
Sharing the Bed Couples should ideally have at least a Queen size, while families who co-sleep might need a King or larger.
Room Size The bed should occupy no more than 60-70% of the available floor space to allow for comfortable movement and other furniture.
Body Size Larger individuals may need wider beds for comfort, regardless of whether they sleep alone or with a partner.
Sleep Movement Active sleepers who toss and turn need more space to move without disturbing a partner or falling off the edge.
Pets If pets sleep on the bed, additional width and/or length may be necessary for everyone’s comfort.
Accessibility Consider doorways, hallways, and staircases when planning for a new bed, as larger sizes can be difficult to move into some homes.
Sleep Quality Research shows that people who feel cramped in bed experience more sleep disturbances throughout the night.

Interesting Facts About Beds Around the World

  • In Japan, traditional futon beds are laid directly on tatami mat floors and stored away during the day to maximize living space.
  • European bed sizes differ from American ones, with “Double” beds often being smaller than their American counterparts.
  • In medieval Europe, most people slept on straw-filled mattresses on the floor, while the wealthy had elaborate four-poster beds.
  • The UK has its own sizing system where a “King” is closer to an American “Queen” and their “Super King” approximates an American “King”.
  • The world’s largest bed was built in the Netherlands and measured 86 ft × 53 ft (26.2m × 16.15m).
  • In Scandinavia, couples often use two twin mattresses side by side with a single fitted sheet, allowing each person to choose their preferred mattress firmness.
  • The ancient Egyptians invented raised beds to keep sleepers away from snakes, rodents, and cold floors.
  • The term “King-sized bed” wasn’t introduced until the 1960s, while Queen beds became popular in the 1950s.
  • The average person spends approximately 26 years of their life sleeping, making bed size an important long-term investment.
  • In China, harder beds are traditionally preferred, as they’re believed to be better for posture and overall health.