How Long Does a Memory Foam Mattress Last?

by Max Stevens

I’m sure you love your memory foam mattress’ hugging comfort. As much as you want it to last forever, its better years may already be behind it because of its age or change in quality.

So that begs the question, how long does a memory foam mattress last?

Even an expensive, high-quality memory foam mattress like Tempur can have a shorter lifespan than intended if not properly maintained and cared for. The lifespan depends on

  • frequency and manner of mattress cleaning
  • frequency of use of the mattress
  • mattress quality
  • weight of the sleeper
  • method of care and maintenance

This guide will discuss how long a memory foam mattress typically lasts, how to extend the lifespan, and when to replace a memory foam mattress.

How Long Does a Memory Foam Mattress Last?

Memory foam mattresses have an average lifespan of 7 yearsbased on a survey of more than 25,000 mattress owners.

One way is to look at the mattress manufacturers’ warranty periods. For example:


Warranty Period


10 years


10 years


15 years

Ghost Bed

20 years


Lifetime warranty

This means that these manufacturers, based on their design and material choices, have intended their memory foam mattresses to last that long.

Of course, this is if the owner or user properly cares for and maintains the mattress per the warranty.

The warranty conditions will usually include information about the care and maintenance needed to prolong the mattress life.

But how do these manufacturers determine the warranty period of a memory foam mattress or how long a mattress will last?


Density refers to the amount of foam in kilograms per cubic metre.

Higher density means more foam per cubic meter. The more foam, the more resilient to stress the mattress is. In contrast, low-density mattresses lose their form and flexibility faster.

In terms of cost, higher densities normally come at a higher price because of the amount of materials used. This is why high-quality mattresses would always come at a higher cost.

While some manufacturers do not disclose the mattress density, like Tempur, you can get an estimate of a mattress’ density by dividing the weight with the mattress dimension, of which both you can get on the mattress’ label. Bring you calculators out:

Mattress Density = Mattress Weight➗ (Mattress Length x Width x Thickness)

And as a reference, here are the corresponding density of the value you got.

Mattress Density


Low Density

Less than 40 kg per cubic metre

Up to 6 years

Medium Density

40 to 75 kg per cubic metre

Up to 7 years

High Density

More than 75 kg per cubic metre

Up to 8 years


Mattress density is different from mattress firmness.

The mattress firmness is the overall feel of the sleeper with the mattress. Soft mattresses that are constructed using plush materials often deteriorate faster.

Mattress Layers

Some memory foam mattresses come with up to 10 foam layers which may comprise the

  • Comfort Layer – This layer’s purpose is mainly for cushioning. This can be made up of two to three layers that may include memory foam, gel-infused foam, or latex foam.
  • Core Layer – This layer is the base of the mattress and is usually made out of firmer foam than that of the comfort layer as it gives support to the mattress.

The core layer will greatly contribute to the overall mattress’ durability as it is the support of the mattress. If the core layer is of low density, the memory foam mattress would easily lose it resistance to compression. Likewise, each foam’s density and firmness per layer will affect the durability and how it will support the sleeper’s weight over time. 

How do you care for a memory foam mattress?

How you care for your memory foam mattress can prolong its lifespan and let you enjoy comfortable nights together. The simplest thing you can do is do regular cleaning of your bed.

Aside from regularly cleaning your bed, here are some tips to ensure the longevity of your memory foam mattress:

Using a mattress protector

Mattress protectors come in various types, like waterproof and allergy-proof mattress protectors.

  • A waterproof mattress protector prevents any spills or liquid from penetrating your mattress.
  • Allergy-proof mattress protectors work both ways by keeping out allergens from penetrating your mattress and sealing in existing allergens so you won’t inhale them.

Any liquid that may infiltrate your mattress will be hard to dry out, especially for a memory foam mattress. This can cause potential mould and mildew damage to your mattress.

Avoid Excessive Wear and Tear

We can all agree that a mattress that has only been used every week will last longer than a mattress that’s being used every day. While it is expected that a mattress will eventually wear out, taking extra care and avoiding the following actions will go a long way:

  • Jumping on the bed
  • Placing heavy objects like weights, books, or luggage on the bed
  • Using the mattress as a standing platform

Proper Mattress Foundation and Ventilation

A good memory foam mattress foundation will allow breathing within the mattress. As a memory foam mattress owner, you know that memory foam tends to get hot while you’re using it. The foam’s ability to absorb body heat and then use this heat to soften the foam to contour your body. A slatted bed foundation is recommended to promote ventilation.

You can also opt to open the windows and turn on the electric fan once in a while to let the mattress air out.

This will help prevent odour and moisture buildup that can potentially ruin your mattress. Moisture can lead to mould and bacteria growth.

When to replace memory foam mattress?

The average lifespan of a memory foam mattress is 7 years. But is this how often you should replace your mattress? Is a 20-year-old mattress too old?

Well, a mattress can never be old enough if it is properly maintained and if it is designed to last that long. Here are the 8 signs that your memory foam mattress is worn out and might need replacement:

  • Your memory foam mattress is sagging.
  • Your memory foam mattress hurts your back and body.
  • Your memory foam mattress takes a long time to go back or does not return to its original shape.
  • Your memory foam mattress is not supportive enough, and you sink on the bed.
  • Your memory foam mattress has grown moulds.
  • Your memory foam mattress is infested with bed bugs.
  • Your memory foam mattress doesn’t give you a good night’s sleep.
  • Your memory foam mattress gives you allergies.

Frequently Asked Question:

Do memory foam mattresses last longer than spring?

Memory foam mattresses last longer than spring mattresses lasting 8 years and 6 years respectively.

This is mainly because the springs on the spring mattress risk breaking and sticking out on the layers. Springs also lose their resistance over time and can cause premature sagging and indents on the mattress.

data of an average life span of mattress
Image source: Sleep Like the Dead

Key Takeaways On Memory Foam Longevity

A memory foam mattress’ durability and lifespan depend mainly on the quality of the mattress as a whole, including its density, firmness, and layer quality. The aftercare of the mattress owner comes second in determining the mattress’s lifespan whether it can be longer or shorter. Proper care and maintenance, including

  • Washing and cleaning beddings regularly
  • Cleaning the mattress
  • Using a mattress protector
  • Having proper ventilation and foundation for the mattress
  • Avoiding excessive wear and tear

All of the above can go a long way in extending your memory foam mattress’ lifespan.


Photo of author


Max Stevens

Chief Editor here at The Sleep Checklist. Suffered from a seemingly infinite knot in my thoracic area (between the spine and shoulder blade) due to my lifelong side sleeping habits. With my girlfriend, we look to provide the most relevant and best mattress advice.