A Parent’s Guide to Toddler Bed Sizes


Welcome! Let’s answer the biggest question right off the bat… if you’re wondering “What size is a toddler bed?“, they are typically 140 cm by 70 cm and are perfect for kids aged 2 to 4.

If you’re looking for more details, well you’re in luck. In this article, we’ll explore toddler beds in-depth and help you choose the best option for your little one.

Key Takeaways

  • A toddler bed is a transitional bed for children aged 2-4, designed with safety features like guardrails and vibrant themes to make the transition from a cot smoother and more enjoyable.
  • Standard dimensions for a toddler bed are approximately 140 cm x 70 cm, making them snug and secure for young children, with minor variations depending on the brand and style.
  • Toddler beds offer practical benefits like low height for easy access, safety features, and the ability to grow with your child, often converting into bigger beds to save on future purchases.

A child's bed in the shape of a tractor

Pictured: The Kidsaw Tractor Toddler Bed

What is a Toddler Bed?

Have you ever caught your little one gazing longingly at the ‘big kids’ beds’ or attempting daring escapes from their cot? That’s when a toddler bed comes into play. It’s the bridge between the secure bars of a cot and the freedom of a larger bed. A toddler bed is designed to make this transition smoother, offering a snug and secure sleep space that’s just the right size for a growing tot.

But a toddler bed isn’t just any bed—it’s built with love and imagination, just like a kid’s bed. Think of vibrant colours, playful themes, and even favourite cartoon characters; all aimed at making bedtime something to look forward to. And let’s not forget the essential safety features like built-in guardrails that make a toddler bed the go-to choice as your child grows.

Transitioning to a toddler bed is a milestone in your child’s life and choosing the right one can support their independence and comfort. Whether it’s a ‘shorty bed’ or a slightly longer ‘junior bed’ for those who need a bit more wiggle room, it’s all about finding the perfect fit for your little dreamer.

Standard Dimensions of a Toddler Bed

When it comes to bed sizes, the toddler bed offers a snug and cosy fit for your child to curl up in. Measuring approximately 140 cm x 70 cm, it’s the ideal size for children aged between 2 to 4 years old. It’s compact enough to provide a sense of security, yet spacious enough to accommodate all the tossing and turning of a good night’s sleep.

While these bed size dimensions are standard, it’s important to note that there’s a little variation across different brands and styles. For example, the Kidsaw Horse and Carriage Bed (pictured below) is 175cm x 73cm and is therefore ideal for children between 3 and 4. In the imperial system, you’ll find these size bed options typically measure around 31 inches in width and 56 inches in length, offering a comfortable space that’s just right for a tot’s bedroom.

A horse and carrriage child's bed with pink horses

Pictured: The Kidsaw Horse and Carriage Toddler Bed

Of course, a key consideration for a toddler bed is the mattress. Often, parents can repurpose the cot mattress, which should measure 140 cm by 70 cm, ensuring a snug fit within the toddler bed frame and preventing any risky gaps that little limbs could get stuck in. However, it’s important that you use a mattress that properly fits the bed for maximum comfort. We stock a wide range of different sizes – check out our full kids’ mattress range here.

Age Range for a Toddler Bed

The leap from a cot to a toddler bed is a big one, and the timing can be as unique as your child. Generally, the sweet spot for transitioning to a toddler bed is between the ages of 2 to 4 years old. But it’s not just about age; it’s about readiness. Some little ones might show signs they’re ready as early as 18 months, while others might be content in their cot for a little longer.

How do you know if your child is ready? Look for cues like their ability to climb out of the cot or their request for a ‘big kid bed’ as a sign of their growing independence. And remember, there’s no one-size-fits-all age for this transition. It’s more about observing your child’s development and making the move when they—and you—feel the time is right.

If you’re wondering about the specifics of moving from a cot to a bigger bed, fear not. The toddler bed is designed to be the perfect intermediary, offering a familiar yet new sleeping environment that caters to the needs of both younger children just out of a cot and older children who aren’t quite ready for the leap to a single bed.

A child looking at a children's book

Kids develop at different rates, so watch out for signs that your child is ready to move to a toddler bed – and try not to rush them. 🙂

Benefits of Toddler Beds

The transition from a cot to a toddler bed isn’t just about size; it’s also about safety and comfort. Toddler beds are often low to the ground, making it easy for little legs to get in and out without the risk of a big tumble. Plus, the raised sides act like a gentle hug, keeping your child safe and snug as they sleep.

Beyond safety, toddler beds also grow with your child. Many models come with removable guardrails, so when your child is ready, you can take the next step towards a full-fledged bed without the need for a brand-new purchase. This adaptability not only saves money but also provides a familiar sleeping environment during a time of big changes.

Then there’s the fun factor—toddler beds often come in a variety of themes and colours that will have your little one racing to bedtime. Whether it’s a bed shaped like a race car or adorned with their favourite superheroes, these beds make the bedroom a place of joy and imagination.

Types of Toddler Beds

When it comes to selecting a toddler bed, the possibilities are as varied as your child’s imagination. From character-themed beds that bring their favourite cartoons to life to novelty beds that support creative play, the options are endless.

For the little adventurer, there’s a range of beds to fuel their fantasies. Imagine a bed that’s also a pirate ship or a princess carriage; these themed beds can make bedtime an exciting journey to dreamland. And for those looking for a touch of sophistication, luxury wood cabin beds with under-bed storage combine style with functionality, keeping the bedroom tidy and stylish.

A convertible kids bed that grows as the child gets older

Pictured: The Stompa Classic Kids White Starter Bed extends as your child grows

Convertible beds, including cot bed options, are another fantastic choice, offering longevity as they transform to accommodate your child’s growth. Starting as a toddler bed, these can later be converted into a single bed or even bunk beds, making them a smart investment for the future.

How to Transition from a Cot to a Toddler Bed

The transition from a cot to a toddler bed is a significant milestone in your child’s life. To ensure a smooth transition, it’s crucial that your child feels emotionally and physically ready for the change. This readiness often coincides with a need for more freedom, perhaps as they start potty training or simply display a desire for independence.

Illustration of a child transitioning from a cot to a toddler bed with the help of a parent

Creating a welcoming and safe new space is key. Here are some tips to help your child transition to a new bed:

  • Opt for a bed with guardrails to provide a sense of security
  • Make sure the mattress fits snugly against the frame to avoid gaps
  • Maintain a consistent bedtime routine to help your child adjust to the new bed
  • Incorporate quiet time before bed to wind down
  • Reinforce the positive steps they are taking with plenty of praise and encouragement

Finally, allow your child to be part of the process. Let them help choose their new bed or bedding, and encourage them to climb into bed by themselves. These small acts of independence can go a long way in making them feel comfortable and excited about their new sleep space.

Choosing the Right Mattress for a Toddler Bed

Selecting the right mattress for your child’s toddler bed is about more than just comfort; it’s about safety and health as well. Here are some factors to consider:

  • A firm mattress supports your little one’s growing bones and provides the right foundation for a good night’s sleep.
  • Hypoallergenic materials can create a healthier sleeping environment, particularly for children with allergies or asthma.
  • Breathable options can help regulate temperature and prevent overheating.

Durability is another important feature to consider when choosing kids mattresses. As you’ll have discovered by now, toddlers are known for their boundless energy, which often extends to jumping and playing on their bed. Look for mattresses that can withstand this extra activity without compromising on support or comfort. And, of course, make sure to choose a mattress that fits the bed frame perfectly to ensure your child’s safety and comfort.

Safety Features of Toddler Beds

Safety is the top priority when it comes to toddler beds. Toddler beds are designed to account for the adventurous nature of young children, featuring low height for easy access and guardrails for that extra layer of protection. The sturdy construction of these beds ensures they can stand up to the rigours of toddler use, providing a safe and secure place for your child to rest.

Attention to detail in design can make all the difference. Here are some key considerations:

  • Rounded edges minimise the risk of injury from sharp corners
  • Smooth finishes prevent the possibility of splinters
  • The mattress should fit snugly within the bed frame, without leaving room for gaps that could pose potential hazards.

Moreover, features like edge support in the mattress can reduce the risk of your child rolling off the bed, ensuring a safe and comfortable sleep environment throughout the night.

When to Move from a Toddler Bed to a Bigger Bed

Just as you navigated the transition from a cot to a toddler bed, there will come a time when your child is ready for the next step: moving to a bigger bed. But how do you know when it’s time? Effective communication with your child about their sleep preferences can provide valuable insights into their readiness.

Physical growth is also a telling sign. If your child has outgrown the toddler bed or if they consistently sleep through the night, it might be time to consider a bigger bed. Kids often reach this stage at around four years old, though all children develop at different rates, so consider the ‘natural’ time to make the transition when you see the signs in your child rather than anyone else. Watch for signs of readiness, like their ability to understand basic safety instructions.

If you’re considering a bunk bed, we recommend that kids ages 3-6 only use the bottom bunk, while older kids can use the top bunk. A low-to-the-ground model (like the one pictured below) could be a great choice.

A low bunk bed with white frame

Pictured: The Shasha Low Shorty White Bunk Bed


From the cosy dimensions of a toddler bed to the grand leap into a bigger bed, we’ve covered the essentials to help your child transition smoothly and safely through each stage of their sleep journey. Remember, the right bed supports your child’s growth, safety, and imagination, creating a haven for dreams to flourish. As you tuck them in tonight, take pride in the fact that you’ve equipped them with a sleep space that’s just as unique and wonderful as they are.

Shop our full range right here. Or dive into our bigger guide to different kids’ bed sizes.

Frequently Asked Questions

At what age should my child move from a cot to a toddler bed?

It’s best to transition your child from a cot to a toddler bed between the ages of 2 to 4, but be sure to look for signs of readiness like climbing out of the cot or expressing interest in a ‘big kid bed’.

What size mattress fits a toddler bed?

A standard toddler bed mattress measures 140 cm x 70 cm, providing a safe and cosy sleep space for your little one. However, this can vary between manufacturers and models, so always double-check you’ve read the details before you place your order, particularly if you’re looking for a matching mattress.

How do I ensure the toddler bed is safe for my child?

To ensure the toddler bed is safe for your child, look for a sturdy frame, guardrails, rounded edges, and a tight-fitting mattress.

Can toddler beds be converted into larger beds as my child grows?

Yes, some toddler beds can be converted into larger beds as your child grows, providing a practical long-term sleeping solution.

Are there toddler beds with storage options for small spaces?

Yes, many toddler beds come with built-in under bed storage or additional options like trundle beds to maximize space in your child’s room. You can easily find a suitable bed for your small space.

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