What Are the Dimensions of a Twin-Size Bed Frame?

What Are the Dimensions of a Twin-Size Bed Frame?

King, queen, full, and of course, the trusty twin—there are plenty of options available to suit any bedroom, budget, or personal preference. 

Twin-size beds are the smallest of the bunch and a fantastic choice for many households, especially in rooms with younger children or limited space.

What are the dimensions of a twin-size bed frame and who are they good for? Below, we’re detailing the sizing of each twin bed variation and a number of options for twin bed frames.

Twin Mattress and Bed Frame Dimensions

A twin mattress measures 38 by 74”. Therefore, the bed frame dimensions are typically between 40 and 43” wide and between 77 and 80” long, giving a bit of extra space on each side for the twin-size mattress to fit snugly within the frame.

Twin vs. Twin XL Beds

As their name suggests, twin XL beds are slightly larger than their standard counterpart. A twin XL mattress is 38 by 80” instead of 74”. The bed frame dimensions are a few inches longer as well: 82–85”, generally speaking. The width of both the mattress and frame remains the same.

Who is a Twin-Size Bed Good For?

Twin-size beds are good for a number of demographics, particularly1:

  • Children
  • Pre-teens
  • Teenagers and adults shorter than 6’ tall

With that being said, twin-size beds are generally a good solution for smaller sleeping spaces and budget-conscious shoppers. Doesn’t sound like a twin is right for you? Check out our blog to learn about queen-size bed frame dimensions, king-size bed frame dimensions, and full-size bed frame dimensions for more.

Types of Mattress Foundations for Twin Beds

Your mattress base sets the foundation for your sleep, and the different options feature unique functional (not purely aesthetic) purposes. Solid and adjustable foundations, as well as the more compact, less popular bunkie boards, are all excellent choices for a twin bed size.

Solid Foundations

Solid foundations provide great support, with bars in the bed base that prevent sagging and help to preserve a mattress’s integrity and shape. They’re usually made from wood, like pine, or from metal.

Adjustable Bases

Adjustable bases are the best option for people with sleep-related health issues, as they allow for customizable positioning of both the head and foot of the mattress. 

Bunkie Boards

Compact and low-profile, bunkie boards provide firm support without adding significant height to the bed.

What Are the Dimensions of a Twin-Size Bed Frame

Types of Twin-Size Bed Frames

As you might imagine, there are several different types of twin-size bed frames to choose from. The choice between frames is typically a question of aesthetics and available space. The simpler the frame, the less space it typically requires.

Panel Beds

Panel beds typically resemble a solid box sitting underneath the mattress: two short side panels, a short footboard, and a taller, more prominent headboard. They feature foundations made of metal or wood and typically upholstered or wooden panels and headboards, making them a classic, understated design choice. 

Sleigh Beds

These beds resemble, well, sleighs, with distinctive curved headboards and footboards. Some sleigh beds feature eccentric designs, but they can also be rather minimalistic, adding a touch of elegance to any bedroom.

Platform Beds

Minimalist and modern, platform bed frames are designed to sit close to the floor. They do not require an additional foundation, like a box spring, which is good news for shoppers with a tighter budget.

Bunk Beds

Are your kiddos sharing a bedroom? Bunk beds can go a long way in making a shared space fun, enjoyable, and as open as possible, given the circumstances. Some bunk beds even come with a twin bed on top and a full on the bottom, which can better accommodate an older sibling in a shared bedroom.

Daybeds and Trundle Beds

Daybeds are like a couch-bed hybrid: With sheets and pillows, they become suitable sleeping areas, especially for occasional guests.

Trundles are a similarly versatile option, instead featuring an additional mattress tucked beneath the top bed that can easily pull out to accommodate guests or sleepovers.

Four-Poster Beds

Four-poster beds feature tall posts at each corner. They’re also referred to as pillar beds or canopy beds, and embody a vintage style that complements a sophisticated bedroom design. The posts can also support drapes and curtains, which provide additional privacy and a uniquely cozy feeling.

Explore Custom Twin Beds from James+James

At James+James, we offer a variety of solid wood twin bed frames, as well as custom bed frames

With a presence in all 50 states, we’re one of the fastest-growing furniture companies in the country. We build by hand, just as high quality furniture is meant to be built. Our team of artisans can create a twin bed that perfectly suits your taste and home décor.

Explore our exclusive offers today, and discover what it truly means to sleep well.



  1. CNET. Twin Mattresses: What You Need to Know Before You Buy. https://www.cnet.com/health/sleep/twin-mattresses-what-you-need-to-know-before-you-buy/ 

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