Mattress Size Comparison: Sizes Guide & Dimensions Chart

It can be overwhelming when choosing the best mattress to fit your room. There are a lot of factors to consider which one is perfect for you, from the mattress types, personal preference, to sleep positions. In this guide, we will display six standard sizes of mattresses and answer the common questions, to help you choose the best one for your needs.

Mattress Sizes	Dimensions (Inches)	Dimensions (Centimeters)
Cal King Size Bed Dimensions	72” x 84”	183 cm x 213.5 cm
King Size Bed Dimensions	76” x 80”	193 cm x 203.5 cm
Queen Size Bed Dimensions	60” x 80”	152.5 cm x 203.5 cm
Full Size Bed Dimensions	54” x 75”	137.5 cm x 190.5 cm
Twin XL Size Bed Dimensions	38” x 80”	96.5 cm x 203.5 cm
Twin Size Bed Dimensions	38” x 75”	96.5 cm x 190.5 cm

Which Bed Size Is Right For You?

Twin Mattress Size

Dimensions: 38” x 75” or 96.5 cm x 190.5 cm
Best for: single sleepers like toddles and teens, or bunk beds.
Minimum Room Size Recommended: 7 x 10 feet.

As known as a single, twin mattress is slim in size, which makes it suitable for kids through their childhood or stacked as bunk bed. It is also ideal for single sleepers with small space to fit in.

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Full Mattress Size

Dimensions: 54” x 75” or 137.5 cm x 190.5 cm
Best for: single adults, guest bedroom or anyone with smaller room space looking for a mattress of an economical price.
Minimum Room Size Recommended: 10 x 11 feet.

The full mattress, sometimes called a double, is 16 inches wider than a twin. It's the best size for single sleepers who want more width the a twin but don't need as much length. A full mattress might be too narrow for most couples.

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Queen Mattress Size

Dimensions: 60” x 80” or 152.5 cm x 203.5 cm
Best for: couples or single sleepers who are prone to sprawl out.
Minimum Room Size Recommended: 10 x 12 feet.

Queen mattresses are the most popular because they are perhaps the most versatile for all sleepers. This size mattresses give sleepers extra space to sleep comfortably and move around in bed, while still fitting in small bedrooms. It is traditional used in master room.

Shop Sweetnight Queen

King Mattress Size

Dimensions: 76” x 80” or 193 cm x 203.5 cm
Best for: couples who share a bed with children or pets; single adults like a luxurious sleep environment.
Minimum Room Size Recommended: 12 x 12 feet.

At 76 inches wide and 80 inches long, the king size mattress offers luxurious space for couples to enjoy their bed time even with sizable pets and children. The King size bed dimensions make it ideal for couples looking to upgrade their queen mattress for some additional space.

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Twin XL Mattress Size

Dimensions: 38” x 80” or 96.5 cm x 203.5 cm
Best for: single teenagers and adults who is taller or anyone with limited space.
Minimum Room Size Recommended: 8 x 10 feet.

A Twin XL size shares the same width as Twin, but offers an extra 5 inches in the length, making it the same length as a Queen and King mattresses. This mattress is most commonly found in college dorm rooms.

Cal King Mattress Size

Dimensions: 72” x 84” or 183 cm x 213.5 cm
Best for: taller sleepers, couples with kids or pets who want a luxurious amount of space.
Minimum Room Size Recommended: 12 x 12 feet.

This size mattress takes approximately four inches of width from a conventional king size bed and adds it to the overall length, which makes it ideal for taller individuals, especially those over six feet. At 72 inches wide, it also offers enough space for couples share the bed with kids.

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Mattress Size Comparison: Sizes Guide & Dimensions Chart