Find Your Ideal Bed Size
Instantly compare sizes • Visualize what truly fits your space & sleep style • Fresh 2026 guide
6+
Standard Sizes
Queen
Most Popular 2026
US/UK/EU
Dimensions Compared
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Room Visualizer
Standard Bed Sizes 2026
Twin bed
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Twin Xl bed
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Full bed
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Queen bed
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King bed
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California bed
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International Mattress Sizes
In this mattress size guide, we illustrate the mattress dimensions of all six standard mattress sizes—and some of the lesser-known options—to help you choose the best mattress for your needs.
Twin
In this mattress size guide, we illustrate the mattress dimensions of all six standard mattress sizes—and some of the lesser-known options—to help you choose the best mattress for your needs.
Best for: kids, bunk beds or single sleepers.
Room size: The minimum room size for a twin bed to fit naturally is 7 x 9 feet. But if you’re looking to outfit the room with cozy accessories like a desk and dresser, an 8 x 10 square foot room may be required for the bed to fit more comfortably.
Twin XL
In this mattress size guide, we illustrate the mattress dimensions of all six standard mattress sizes—and some of the lesser-known options—to help you choose the best mattress for your needs.
Best for: kids, bunk beds or single sleepers.
Room size: The minimum room size for a twin bed to fit naturally is 7 x 9 feet. But if you’re looking to outfit the room with cozy accessories like a desk and dresser, an 8 x 10 square foot room may be required for the bed to fit more comfortably.
Full
In this mattress size guide, we illustrate the mattress dimensions of all six standard mattress sizes—and some of the lesser-known options—to help you choose the best mattress for your needs.
Queen
In this mattress size guide, we illustrate the mattress dimensions of all six standard mattress sizes—and some of the lesser-known options—to help you choose the best mattress for your needs.
Best for: kids, bunk beds or single sleepers.
Room size: The minimum room size for a twin bed to fit naturally is 7 x 9 feet. But if you’re looking to outfit the room with cozy accessories like a desk and dresser, an 8 x 10 square foot room may be required for the bed to fit more comfortably.
King
In this mattress size guide, we illustrate the mattress dimensions of all six standard mattress sizes—and some of the lesser-known options—to help you choose the best mattress for your needs.
Calfornia
In this mattress size guide, we illustrate the mattress dimensions of all six standard mattress sizes—and some of the lesser-known options—to help you choose the best mattress for your needs.
