Memory Foam$
Zinus Green Tea Memory Foam
Medium · 100-night trial · 10-year warranty
Mattress Size Comparison Tool
A King is 16 inches wider than a Queen, giving each sleeper 38 inches of personal space instead of 30. Select any two sizes below to see the exact differences in width, length, surface area, and room requirements.
Queen vs King — Visual Comparison
Side-by-Side Comparison
| Metric | Queen | King | Difference |
|---|---|---|---|
| Width | 60" | 76" | +16" |
| Length | 80" | 80" | same |
| Surface Area | 4,800 sq in | 6,080 sq in | +26.7% |
| Width Per Sleeper | 30" | 38" | +8" |
| Equivalent Solo Bed | Like a Twin minus a few inches | Full Twin width each | — |
| Min Room Width | 10 ft | 12 ft | +2 ft |
| Min Room Length | 10 ft | 10 ft | same |
Mattresses Available in Both Sizes
Memory Foam$$
Nectar Classic Memory Foam
Medium-Firm · 365-night trial · Forever warranty
Hybrid$$$
DreamCloud Classic Hybrid
Medium-Firm · 365-night trial · Forever warranty
Most Popular Size Comparisons
Queen vs King
The most common upgrade decision. A King (76×80") is 16 inches wider than a Queen (60×80") with the same length. Each partner gets 38" of personal width on a King compared to 30" on a Queen. The tradeoff: you need a 12-foot-wide room for a King vs. 10 feet for a Queen, and King mattresses typically cost $150–$300 more.
Full vs Queen
A Queen (60×80") is 6 inches wider and 5 inches longer than a Full (54×75"). For couples, this means 30" per person instead of 27", which makes a real difference over a full night. Single adults benefit from the extra length too, especially anyone over 5'10". Both fit a 10×10' room, so the Queen is almost always the better choice unless budget is the deciding factor.
Twin vs Twin XL
Same 38" width, but Twin XL adds 5 inches of length (80" vs. 75"). The XL length matches Queen and King mattresses, making it the right choice for teenagers who are still growing, college students, and any single sleeper over 5'10". The price difference is usually under $30.
How to Choose Between Two Sizes
Measure your room first
Every mattress needs at least 24 inches of clearance on each accessible side and 36 inches at the foot for comfortable walking. A King needs a minimum 12-foot-wide room. A Queen fits rooms as small as 10×10'. If your room is borderline, the smaller size with generous clearance beats a larger mattress with cramped walkways.
Consider sleeper needs
For two adults, 30 inches of personal width per person (Queen) is the minimum comfortable threshold. If either partner is a restless sleeper, moves around at night, or runs warm, the extra 8 inches per person on a King makes a measurable difference in sleep quality. For single sleepers, anything above a Twin (38") is about comfort preference rather than necessity.
Factor in the budget gap
Upgrading from Queen to King typically adds $100–$300 to the mattress price. Sheets, mattress protectors, and comforters will cost more in the larger size too. If the room fits both sizes and budget allows, the larger size is almost always worth it. You will never regret having more sleeping space.
Not sure which size fits your room?
Use our room calculator to find the largest mattress that fits your space with comfortable clearance.
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