Skip to content
How Heavy is a King Size Bed Mattress?
What is the Weight of the King Size Bed Mattress?
A king size bed mattress’s weight varies by material and thickness. Here’s a general range:
Innerspring: 100–150 lbs (45–68 kg) – Lighter due to steel coils and minimal padding.
Memory Foam: 100–150 lbs (45–68 kg) – Denser foam increases weight, especially in thicker models (12–14 inches).
Hybrid: 120–180 lbs (54–82 kg) – Combines coils and foam for mid-range heft.
Latex: 150–200 lbs (68–91 kg) – Natural latex is dense and heavy.
Key factors:
Thickness: Adds 10–30 lbs (4.5–14 kg) per extra inch.
Reinforcement: Edge support or cooling layers add weight.
Does the material of a king size bed mattress affect its weight?
Yes. The material of a king size bed mattress significantly impacts its weight. Here’s how:
Innerspring: Lightest (90–140 lbs / 41–63 kg) due to steel coils and minimal padding.
Memory Foam: Mid-weight (100–150 lbs / 45–68 kg) from dense foam layers.
Hybrid: Heavier (120–180 lbs / 54–82 kg) with combined coils + foam.
Latex: Heaviest (150–200 lbs / 68–91 kg) due to dense natural rubber.
Additional factors:
Thickness: Each extra inch adds ~10–30 lbs (4.5–14 kg).
Features: Cooling gels, pillow tops, or reinforced edges increase weight.
Check the mattress weight if you’re moving it yourself or have floor/floorboard weight limits.
Does the thickness of a king size bed mattress influence its weight?
Yes, the thickness of a king size bed mattress directly impacts its weight. Each additional inch of material adds ~10–30 lbs (4.5–14 kg) , depending on the type:
Memory Foam: A 12-inch mattress weighs 100–130 lbs (45–59 kg), while a 14-inch version can reach 140–160 lbs (64–73 kg).
Latex: A 10-inch mattress averages 150–170 lbs (68–77 kg), but 12-inch models often exceed 180–200 lbs (82–91 kg).
Hybrid/Innerspring: Thicker pillow tops or coils add 15–25 lbs (7–11 kg) per inch.
Why it matters:
Moving challenges: Thicker mattresses are bulkier and harder to maneuver through narrow doors or stairs.
Bed frame strain: Ensure your frame supports the total weight (mattress + sleepers) to avoid sagging.
Thicker ≠ heavier material density (e.g., latex vs. foam) also plays a role. Always check specs before buying.
Does the coil count in king size bed mattress affect its weight?
Yes, coil count in a king size bed mattress (*76x80 inches / 193x203 cm*) affects weight, but the impact depends on coil gauge (thickness) and padding materials.
Typical Weight Range:
Low coil count (500–800 coils): 90–120 lbs (41–54 kg) – Lighter due to fewer, thicker coils (e.g., 12–14 gauge).
High coil count (800–1,200+ coils): 120–150 lbs (54–68 kg) – More (or thinner) coils add weight.
Why Coil Count Matters:
Steel Density: More coils = more steel, increasing weight.
Coil Gauge: Thinner coils (higher gauge, e.g., 16–18) are lighter but may require more coils for support.
Padding Layers: A 600-coil mattress with thick foam can weigh more than a 1,000-coil model with minimal padding.
Example Comparisons:
600 coils + 2" foam: ~100 lbs (45 kg).
1,000 coils + 1" foam: ~110 lbs (50 kg).
For hybrids or pillow-top mattresses, foam/latex layers often contribute more to weight than coils. Always check specs if weight is a concern for moving or bed frame limits.
