Bed Frame Sizes and Dimensions Guide

Written by
 Purple Staff
Last Updated
February 28, 2023
min read

A sturdy bed frame is the key to increasing your mattress’ durability and the comfort it provides. Bed frames can also play to your aesthetic preferences and keep your mattress from gathering dirt on the floor. Some may even come with a headboard, footboard, side panels, or other attachments for added comfort and storage.

Like mattresses, bed frames are available in many sizes, and picking the right one is often fairly straightforward. However, you still need to know a few things when shopping for the right bed frame. This guide will give you the appropriate tips and tricks.

Bed Frame Size Chart

Bed Frame

Bed Frame Size

Bed Frame Dimensions

Minimum Room Size


38 in x 74 in

40 - 43 in x 77 - 80 in

7 ft x 10 ft

Twin XL

38 in x 80 in

40 - 43 in x 82 - 85 in

7 ft x 10.5 ft


54 in x 75 in

56 - 59 in x 77 - 80 in

9.5 ft x 10.5 ft


60 in x 80 in

62 - 65 in x 82 - 85 x

10 ft x 10 ft


76 in x 80 in

78 - 81 in x 82 - 85 in

12 ft x 12 ft

California King

72 in x 84 in

74 - 77 in x 86 - 89 in

12 ft x 12 ft

Not sure if you need a bed frame? Learn more about if you need a bed frame.

Standard Bed Frame Sizes

Most bed frame sizes match up directly with the same mattress size, although some may be slightly larger to accommodate the mattress better. Here are the standard bed frame sizes available at any furniture store.


Dimensions: 40 - 43 in x 77 - 80 in

Twin bed frames are roughly 40 - 43 in x 77 - 80 in and fit a twin mattress. These bed frames are easy to move around and will fit any room. Some twin bed frames are also available as bunk beds, perfect for two people sharing limited space.

Twin XL

Dimensions: 40 - 43 in x 82 - 85 in

Twin XL bed frames provide more leg room for taller sleepers who don’t require extra width. They are common in standard dormitories or for young adults with limited space. Twin xl bed frames measure roughly 40 - 43 in x 82 - 85 in.

While it may seem like no issue, you shouldn’t purchase a twin mattress for a twin XL frame as the former will be much shorter than the latter. It may be suitable for the mattress’ width, but the gap between the headboard and floorboard can cause the mattress to slide.


Dimensions: 56 - 59 in x 77 - 80 in

Full-size bed frames are perfect for teenagers and adults who are combination sleepers. You can change sleeping positions on a full-size frame without falling off or dangling from the bed. If purchasing a full-size bed frame, ensure that your room can accommodate its width.


Dimensions: 62 - 65 in x 82 - 85 in

Queen-size bed frames are the most popular among couples. Measuring 62 - 65 in x 82 - 85 inches. They’re a great budget option and are highly versatile, fitting most rooms. Accessories for queen-size bed frames are also readily available and affordable.


Dimensions: 78 - 81 in x 82 - 85 in

A king-size frame is an excellent choice for couples who can afford a bit of luxury. King-size frames also suit parents who occasionally co-sleep with children or pets. While it allows maximum personal space, king frames are expensive and notoriously difficult to move. 

California King

Dimensions: 74 - 77 in x 86 - 89 in

While not larger than a king, California king mattresses and frames are longer and narrower for sleepers who require extra legroom. While this frame is the longest available standard size, finding accessories for it can be troublesome.

Not sure how to choose a bed frame? Learn more about what you need to know when choosing a bed frame.

Types Of Bed Frames

While these types of bed frames come in standard sizes, some may vary depending on the type of frame you need. Some of these frames are simplistic without too many bells and whistles, while others are more functional. Below are a few common kinds of bed frames.


Panel frames support mattresses and box springs, with railed support on the sides and a slatted surface. Panel frames also include a headboard and footboard. They are generally affordable and very sturdy.


Unlike panel frames, platform bed frames can support a mattress independently – no box spring or foundation required. Its surface comprises wooden slats between 2 and 2.75 inches apart to help distribute weight evenly and prevent premature sagging.

Most basic platform frames come with a headboard and footboard and are minimalistic.

Bunk Bed

Bunk beds are very popular among families with more than one young child. Most standard bunk beds support two separate twin mattresses. A typical frame will include four support pillars and a ladder.

Depending on your needs, you can also purchase bunk beds that support full-size mattresses. More intricately designed bunk beds can support up to three beds, though this is rare.

Four Poster

A four-poster bed frame has four pillars on each side plus a headboard, footboard, and side panels. Most people decorate four-poster frames with canopies or curtains for added privacy or insulation.


As their name suggests, sleigh frames are built in the shape of a sleigh and often have curved headboards and footboards. They are incredibly durable and decorative but also heavy and difficult to move.


Since the rise of space-saving furniture, loft bed frames have grown in popularity. They are a variation of the bunk bed but come with space for other furniture instead of a bottom bunk.

Loft beds are ideal for single sleepers but also have larger frame variations that can support full mattresses.


Adjustable bed frames are perhaps the most versatile, but they are most commonly available in queen and king sizes. This frame is often remote-controlled, with under-bed LED lighting and other luxurious features.

Adjustable beds help resolve health conditions like sleep apnea and back pain. They are also highly customizable for couples with varied sleeping preferences. 

Common Bed Frame Materials

Most bed frames are available in these two materials:


Wood is the most popular bed frame material and is typically more expensive than its metal counterparts. Depending on the type of wood used to build a frame, weights and durability may vary.

Most manufacturers use oak and pine, which are the most durable. Budget options may use particle boards containing pressed wood pieces to create solid boards. These pressed slats are then coated with vinyl to mimic natural wood. Particle boards are often very light and portable but more prone to breaking.


Metal is a popular budget choice, as it is often sturdy but not as durable as wood. It is also versatile and comes in many different colors and designs. However, metal slats are not scratch-proof and often warp over time.

Match Your Mattress To The Right Bed Frame

While you don’t need a highly decorative bed frame or dozens of add-ons to achieve high-quality sleep, having even a basic one can provide excellent support for your mattress and improve many health needs. Make sure to get the right bed frame for your mattress to get optimal sleep!

Purple has a variety of bed frames to match your needs.

Purple platform bed: The platform bed frame is designed to be strong, simple, and provide storage. This bed sets up in minutes and provides plenty of storage space below your mattress.

The Purple bed frame: The purple bed frame is a more stylish option without sacrificing support. Featuring a gray fabric with wooden tapered legs. Set up is simple and takes minutes

Purple Adjustable bed frame: The Ascent adjustable bed frame is designed to improve sleep quality and comfort. Customize your comfort and support at an affordable price.


Frequently Asked Questions About Bed Frame Sizes

How much bigger should a bed frame be than a mattress?

Most bed frames provide about two inches of allowance on each side to accommodate your mattress, though they can have gaps as big as five inches. As a rule of thumb, you should get a bed frame that matches your mattress. For instance, full mattresses should go on full bed frames, queen-size mattresses should go on queen mattresses, and so on.

Is a bed frame necessary?

At the very least, you should have a mattress foundation or basic platform frame that suits your mattress. A bed frame provides extra support and keeps your mattress off the floor. While you could place your mattress directly on the floor in theory, it can collect dust and other allergens.

How tall is a standard bed frame height?

The average height of a bed frame is 8 to 16 inches. Combined with a mattress, bed frames can reach between 16 and 30 inches tall. Some bed frames have removable legs or are adjustable. 

Can you use a mattress that is too small for your bed frame?

You can technically use a smaller mattress with a bigger frame, but it isn’t recommended. Picking a bed frame that’s too big can cause your mattress to slide around in your sleep.

How do you pick the right bed frame for your mattress?

Picking the right bed frame for your mattress is often a straightforward process – just find one that corresponds to your mattress size. Your decision may vary depending on what type of material you choose, whether you want a decorative headboard, or have other needs that will require other features.