Mattress thickness guide: 6 inch vs 8 inch
Thickness is one of the first numbers you see on a mattress listing, and it is easy to assume taller means better. It doesn't — at least not automatically. This mattress thickness guide explains what the difference between a 6 inch vs 8 inch mattress really comes down to, and how to pick without paying for inches you won't use.
What thickness actually changes
Extra height gives a manufacturer room for more layers — typically a thicker soft comfort layer above the support core. So a taller mattress usually feels more cushioned. What thickness does not guarantee is better support. A 6-inch mattress with a dense HR foam core can support your spine better than an 8-inch one built on cheap foam.
6 inch vs 8 inch at a glance
| 6 inch | 8 inch | |
|---|---|---|
| Typical feel | Firmer, more direct support | More cushioned surface |
| Room for layers | Core plus a thin comfort layer | Core plus deeper comfort layers |
| Best for | Back and stomach sleepers, firm feel | Side sleepers, couples, plush feel |
| Bed height | Lower; suits deep box beds | Taller; check headboard and sheets |
| Weight to move | Lighter | Heavier |
| Heat | Slightly cooler | Slightly warmer |
When a 6-inch mattress is the right choice
- You want firm, orthopaedic-style support. Firm mattresses don't need deep comfort layers — adding them would soften the feel you're after.
- You sleep on your back or stomach and are of average weight.
- Your bed is a box bed or diwan with a raised edge; a thicker mattress may sit awkwardly above the frame.
- It is for a child, guest room or a single bed that won't see heavy nightly use from adults.
- You plan to add a topper later, which adds height of its own.
When an 8-inch mattress is the better call
- You sleep on your side and need deeper cushioning for shoulders and hips.
- You want a plush or memory foam feel. Soft foam needs depth so you don't sink through to the core.
- You are a heavier sleeper wanting a cushioned feel — extra depth helps stop you bottoming out.
- Two people share the bed and want a more balanced surface with less edge-to-middle difference.
- You want a reversible mattress with two different comfort faces.
What about 5, 10 or 12 inches?
5 inches and under is fine for kids, occasional use or as a floor mattress, but adults sleeping on it nightly may feel the base. 10 inches and above is mostly about luxury feel and layering; it costs noticeably more, weighs more and is rarely necessary for support. For most adults in India, 6 to 8 inches covers the useful range. See how thickness feeds into price in mattress price in India.
Practical checks before you buy
- Fitted sheets. Many standard Indian fitted sheets are cut for thinner mattresses; check the pocket depth.
- Bed frame height. Add the mattress to the frame height and make sure it's comfortable to sit on and get out of — particularly for older family members.
- Box beds. Measure the depth of the recess so the mattress isn't swallowed or perched.
- Size. Thickness doesn't change length and width — see mattress sizes in India.
Our 6-inch and 8-inch options
Our 6-inch mattresses are the firmer ones. The Orthopaedic Pro (medium-firm, HR foam, 7-zone) suits back sleepers and people with lower-back discomfort. The Spine Shield is extra-firm — for those who want it very firm, but hard on side sleepers.
Our 8-inch mattresses are the cushioned ones: the medium SensiCore for side sleepers and couples, the soft Memory Luxe, and the reversible Dual Comfort Pro. All are made with BIS-compliant HR foam in our Jodhpur factory, ship vacuum-compressed (allow up to 72 hours to fully expand before judging height or feel) and deliver free across India.
If you're adding height with a topper instead, see 2-inch vs 4-inch topper.
Frequently asked questions
Yes, if it has a good supportive core. Many firm and orthopaedic mattresses are 6 inches. Side sleepers and people who want a plush feel may prefer 8 inches.
Not automatically. It usually feels more cushioned because there is room for more comfort layers, but support depends on the foam quality and firmness, not height.
Thickness matters less than firmness and core quality. A 6-inch medium-firm HR foam mattress is a sensible choice for many people with back pain.
Vacuum-compressed mattresses need time to expand. Allow up to 72 hours in a ventilated room before measuring.