If you’re buying a single bed in Joburg, one of the most important questions is:
What mattress actually fits a single bed properly?
The answer is simple — but there are a few important details you need to get right.
Standard Single Mattress Size
In South Africa, a standard single mattress size is:
- 91 cm wide
- 188 cm long
This is designed to fit a standard single bed base perfectly.
→ See Single Bed Dimensions
Single XL Mattress (Extra Length)
For taller individuals, there is also an extra length option:
- 91 cm wide
- 200 cm long
This is ideal if:
- You are over average height
- You want extra legroom
Important:
Make sure your bed base matches the length — a 200 cm mattress will not fit a 188 cm base.
Can You Use Other Mattress Sizes on a Single Bed?
Three-Quarter Mattress
- Width: 107 cm
👉 Too wide — will not fit
Double Mattress
- Width: 137 cm
Far too large
Smaller Mattresses
Not recommended — will shift and reduce support
Choosing the Right Mattress Type
Once you have the correct size, the next step is choosing the right type of mattress. The right mattress will be more of a determination based on comfort rather than size. Read – Is sleeping on a single bed set comfortable?
1. Foam Mattresses
Best for:
- Kids
- Light sleepers
- Budget buyers
Benefits:
- Affordable
- Lightweight
- Low maintenance
2. Spring Mattresses
Best for:
- Everyday adult use
- Guest rooms
Benefits:
- Good support
- Durable
- Widely available
3. Pocket Spring Mattresses
Best for:
- Adults
- Comfort-focused buyers
Benefits:
- Better body support
- Reduced motion transfer
- More premium feel
4. Memory Foam Mattresses
Best for:
- Pressure relief
- Joint support
Benefits:
- Contours to your body
- Comfortable for side sleepers
Choosing the Right Firmness
Firmness plays a big role in comfort.
General guide:
- Soft → lighter individuals
- Medium → most sleepers
- Firm → heavier individuals / support needs
Don’t Forget Weight Ratings
Not all single mattresses are built the same.
Always check the weight rating per person
Typical ranges:
- 70–90 kg → light use / kids
- 100–120 kg → standard adult use
- 130 kg+ → heavy-duty support
Common Mistakes to Avoid
Buying the wrong length
Ignoring weight limits
Choosing based on price alone
Not matching the mattress to the sleeper
These mistakes can lead to poor sleep and a reduced lifespan
Final Verdict
So, what mattress fits a single bed?
A 91 x 188 cm mattress (or 91 x 200 cm for extra length) is the correct fit.
From there, your choice depends on:
- Comfort preference
- Budget
- Support needs
Ready to Complete Your Bed Setup?
Browse our range of single beds for sale in Johannesburg and find the right base and mattress combination for your needs.