How to Choose the Right Bed Size for Your Growing Child

Choosing the right bed for your child isn’t just about comfort — it’s about safety, growth, and creating a space that supports healthy sleep. New Zealand parents often ask when to move from a cot to a toddler bed, and when it’s time for a “big kids’ bed.” Let’s look at how to choose the perfect size at every stage, without having to replace furniture too often.

1. The Transition from Cot to First Bed

Most children move out of the cot between 18 months and 3.5 years. At this stage, a Montessori floor bed or low toddler bed is the best choice. It’s safe, close to the ground, and encourages independence — your little one can climb in and out on their own. According to Plunket NZ, readiness and safety matter more than age.

2. Growing Into a Toddler Bed

A toddler bed works well until around age 5 or 6. Look for solid wooden frames made from non-toxic materials — like our NZ pine designs — that can handle active sleepers and still look beautiful in any room. When choosing the size, think about the bedding you already have and whether it will fit future upgrades to a larger bed.

3. When to Move to a Single or King Single Bed

Once your child starts school, a single or king single bed is usually the best next step. It offers more space for growth and comfort, and is ideal for reading together before bedtime. Many families in New Zealand choose bunk beds at this stage, as they can later serve siblings or guests while saving space.

4. Flippable Beds: A Smart Long-Term Choice

If you want a bed that truly grows with your child, consider a flippable bed.
This clever design can be used in two stages: as a low toddler bed during the early years, and later flipped to create extra height and storage space underneath.
It’s a practical, long-term solution that saves you from buying new furniture as your child grows.
KitSmart’s flippable beds are made from durable birch plywood — a safe, sustainable material crafted in New Zealand to last through every stage of childhood.

5. Safety and Comfort Above All

Always make sure your child’s bed meets safety standards: smooth edges, sturdy construction, and non-toxic finishes are essential. Avoid high frames for younger children and ensure there’s enough ventilation under the mattress. (See also: Furniture with Character, Made with Love in New Zealand.)

6. Key Takeaways

• ✔️ Under 3 years: Montessori floor bed for safety and independence.
• ✔️ Ages 3–6: Toddler bed for comfort and security.
• ✔️ Ages 6+: Single or king single for long-term use.
• ✔️ Consider convertible or bunk options for flexibility.

Your child’s bed should grow with them — from their first independent naps to cozy evenings spent reading. By choosing a natural, well-built bed from KitSmart, you’re investing in safety, durability, and peace of mind. Explore our kids’ bed collection to find the perfect match for your growing child.

FAQs About Kids’ Bed Sizes

1. When should I move my child from a cot to a bed?

Usually between 18 months and 3.5 years, depending on readiness and safety signs. See Plunket NZ for guidance.

2. What size bed is best for a 6-year-old?

A single or king single bed gives enough room to grow and stay comfortable for years ahead.

3. How can I make sure a kids’ bed is safe?

Look for sturdy NZ-made furniture, low designs for toddlers, and certified non-toxic finishes.

4. Are convertible beds worth it?

Yes — they grow with your child and save money long-term, while maintaining a consistent room style.