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Bedroom sizes

Many bedrooms in the US are about 10 × 12 to 12 × 12 ft, or 120 to 144 sq ft. A primary bedroom is often 14 × 16 ft or larger, and the building code minimum is 70 sq ft with at least 7 ft in each direction.

Bedroom

Bedroom

Bedroom16.72 m²

180 sq ft
Draw this room in the editor

The editor opens with this room, inside sizes, ready to draw the rest of the home.

By the Squaremetry team · Updated · 5 min read · How we calculate

A bedroom of 12 by 12 feet with a queen bed, drawn to scale.
Common 12 × 12 ft

In short

  • Common bedroom: about 10 × 12 to 12 × 12 ft (120 to 144 sq ft).
  • Primary bedroom: often 14 × 16 ft (224 sq ft) or more.
  • Code minimum: 70 sq ft, no side under 7 ft (IRC R304).

Bedroom sizes at a glance

All four rooms drawn to the same scale, with the largest bed that leaves a walkway.

  • Minimum bedroom of 7 by 10 feet with a twin bed.

    Minimum · Twin bed

  • Small bedroom of 10 by 10 feet with a king bed.

    Small · King bed

  • Common bedroom of 12 by 12 feet with a king bed.

    Common · King bed

  • Primary bedroom of 14 by 16 feet with a king bed.

    Primary · King bed

Minimum 7′ × 10′ (70 sq ft, twin bed) · Small 10′ × 10′ (100 sq ft) · Common 12′ × 12′ (144 sq ft) · Primary 14′ × 16′ (224 sq ft).

Minimum 7′ × 10′ (70 sq ft, twin bed) · Small 10′ × 10′ (100 sq ft) · Common 12′ × 12′ (144 sq ft) · Primary 14′ × 16′ (224 sq ft).

Bed sizes

Table of bed sizes
BedMattress
Twin38″ × 75″
Full54″ × 75″
Queen60″ × 80″
King76″ × 80″
California king72″ × 84″

Minimum size by code

The International Residential Code asks for at least 70 sq ft in a habitable room, with no side shorter than 7 ft (sections R304.1 and R304.2). A bedroom also needs a window or door for emergency escape. Local codes can be stricter.

Source: International Residential Code 2021, section R304: Minimum room areas, International Code Council.

Closets

A closet is not required by the IRC, but many buyers and listing services expect one in a bedroom.

About this page · Written by the Squaremetry team. Code references: IRC 2021, section R304. Last checked on Sep 27, 2026.

Questions

Bedroom size: questions

About bedroom sizes. Can’t find your answer? Send us a message.

What is a common size for a bedroom?

Many bedrooms are about 10 × 12 to 12 × 12 ft, or 120 to 144 sq ft. Primary bedrooms are often larger, such as 14 × 16 ft.

What is the minimum size for a bedroom?

The International Residential Code asks for at least 70 sq ft in a habitable room, with no side shorter than 7 ft. A bedroom also needs a window or door for emergency escape. Local codes can be stricter.

What size is a primary bedroom?

There is no rule. A primary bedroom of 14 × 16 ft (224 sq ft) fits a king bed with room to walk around it.

Does a bedroom need a closet?

The IRC does not require one, but many buyers and listing services expect a closet in a bedroom.

How do I measure a bedroom?

Measure wall to wall at floor level, the longest way and the widest way. Measure a closet as its own part and add it to the room.

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Other rooms

Other room sizes

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