What are the Australian cot mattress sizes in 2025?
Buying the wrong mattress size can turn setting up your baby’s cot into a frustrating puzzle.
Australian cot mattress sizes in 2025 follow two main standards: standard (130 x 69 cm) and compact (120 x 60 cm). Always match your mattress to your cot brand and model.
Getting the right fit isn’t just about comfort—it’s about safety. Let’s explore the sizes, fit rules, and how to avoid common mistakes when buying a cot mattress in Australia.
What is the standard cot mattress size in Australia?
Most full-size Australian cots follow this measurement.
The standard Australian cot mattress size is 130 cm long x 69 cm wide, with a depth of 10–15 cm.
Designed for long-term use
This size is perfect if you plan to use your cot from newborn to toddler age. Most full-size cots are compatible, and many convert to toddler beds later.
We used a 130 x 69 cm mattress and it lasted until age 3 when we upgraded to a junior bed. Just make sure to use a fitted sheet that matches the exact size.
| Mattress Type | Dimensions (cm) | Fits Most Full-Size Cots? |
|---|---|---|
| Standard Cot | 130 x 69 | Yes |
| Compact Cot | 120 x 60 | No |
What size is a compact cot mattress?
Compact cots are popular in apartments and for travel.
Compact cot mattresses in Australia typically measure 120 cm long x 60 cm wide.
Ideal for small spaces
This smaller size works well for:
- Urban homes
- Shared nurseries
- Grandparents’ houses
- Daycare setups
Just know that your baby may outgrow it faster—usually around 18–24 months. If you’re short on space, though, it’s a solid solution.
| Mattress Type | Best For | Limitation |
|---|---|---|
| Compact Cot | Small rooms, travel use | Shorter lifespan (less than 2 years) |
| Standard Cot | Long-term nursery use | Takes more space |
How do I choose the right cot and mattress together?
Size mismatch = frustration (and safety risk).
Always buy your cot and mattress together—or check the manufacturer’s specs to match them exactly.
Safety guidelines for a snug fit
Your mattress should fit firmly inside the cot with no more than a 2 cm gap on any side. Use this checklist:
- Cot and mattress both meet AS/NZS 2172:2013 safety standards
- The mattress is firm, not soft or plush
- No gaps larger than 20 mm (2 cm) at sides or ends
- Mattress height/depth is at least 10 cm, no more than 15 cm
We once used a hand-me-down mattress that seemed “close enough” in size. But after noticing a 3 cm gap, we replaced it. Too risky.
Can I get a custom cot mattress in Australia?
Yes—especially useful if your cot is handmade, imported, or vintage.
Custom cot mattresses are available from specialty manufacturers like Craftsliving, who build to exact dimensions and safety standards.
Craftsliving: Safe, made-to-fit comfort
About Craftsliving
At Craftsliving, we manufacture custom cot mattresses to suit any cot—standard, compact, or custom-made. As a direct factory, we offer:
- Custom sizes, shapes, and depths
- Certified materials that meet Australian safety standards
- Wholesale and bulk pricing
- Quick production and nationwide delivery
Whether your cot is imported, boutique, or one-of-a-kind, Craftsliving creates mattresses that fit perfectly—and keep your baby safe and supported.
We ordered a custom mattress for an heirloom cot and were amazed by the precision and comfort. It looked and felt just like the premium store brands.
What materials are best for cot mattresses?
Not all mattresses are created equal—even if the size is right.
The best cot mattresses use firm, breathable, non-toxic materials like dense foam, innerspring, or latex that pass Australian safety tests.
Material comparison
| Material Type | Pros | Cons |
|---|---|---|
| High-density foam | Lightweight, firm, affordable | Can wear out faster |
| Innerspring | Durable, well-ventilated | Heavier, more costly |
| Natural latex | Hypoallergenic, breathable | Expensive, rare fit |
We chose a dense foam mattress with a washable cover. It was lightweight, firm, and fit our standard cot snugly.
Avoid memory foam—it’s too soft for babies and not breathable enough.
