The Ultimate Guide to Kids’ Bed Sizes: Choosing the Perfect Fit for Your Child

The Ultimate Guide to Kids’ Bed Sizes: Choosing the Perfect Fit for Your Child

Selecting the right bed for your child can be a challenging task, especially when faced with a range of sizes, styles, and options. From toddlers to teens, each stage of your child’s life comes with unique needs. This comprehensive guide will help you navigate bed sizes, understand their suitability for kids, and explore which beds are best suited to different age groups and room types.


Why Choosing the Right Bed Size Matters

The right bed size is not just about fitting your space; it plays a vital role in your child's comfort, growth, and development. A bed that’s too small can hinder their sleep quality, while one that’s too large might dominate their room and leave little space for activities or storage.


Common Bed Sizes and Their Suitability for Kids

Cot Beds (53cm x 120cm)

  • Best For: Infants up to 2 years old.
  • Description: Cot beds are compact and designed to provide a secure sleeping environment for babies. They feature high sides to prevent falls and often come with adjustable mattress heights.
  • Considerations: As your baby grows, they will quickly outgrow a cot bed, so it’s worth planning the transition to a toddler or single bed in advance.

Toddler Beds (70cm x 140cm)

  • Best For: Ages 2-5 years.
  • Description: Toddler beds are a natural step up from cot beds. They are slightly larger but still low to the ground, making them easy and safe for little ones to climb in and out of independently.
  • Key Features: Many toddler beds include side rails for added security and fun designs to make bedtime exciting for young children.
  • Space Consideration: Ideal for small bedrooms or shared spaces.

Small Single Beds (76cm x 190cm)

  • Best For: Ages 4-10 years.
  • Description: A small single bed is a great option for younger children transitioning from a toddler bed. It provides enough space for a child to stretch out but doesn’t overwhelm a smaller room.
  • Why Choose This: Ideal for compact rooms or when space is at a premium.

Single Beds (90cm x 190cm)

  • Best For: Ages 4+ (including teens).
  • Description: Single beds are a versatile choice, offering enough room for growing kids and even teenagers. They’re also perfect for guest rooms or shared spaces.
  • Options for Kids: Many single beds come with additional features like storage drawers, trundles for sleepovers, or integrated desks.

Small Double Beds (120cm x 190cm)

  • Best For: Older children or teenagers who like more space.
  • Description: A small double bed provides extra width, making it a comfortable choice for kids who tend to move around during sleep or for teenagers who need a little more room.
  • Benefits: Doubles as a bed for sleepovers or a compact guest bed.

Double Beds (135cm x 190cm)

  • Best For: Teens or kids with large bedrooms.
  • Description: A double bed offers ample sleeping space and can grow with your child into adulthood. While it may take up more room, it provides a luxurious feel.

Other Sizes (King and Super King)

While king-size beds are rarely used for children, they may be suitable for families with large bedrooms or parents who co-sleep with younger children.


Specialised Kids’ Beds

Aside from traditional bed sizes, there are many styles of beds specifically designed to maximise space and functionality for kids. Here are some popular options:

Bunk Beds

  • Best For: Ages 6+ (top bunk safety).
  • Description: Perfect for siblings sharing a room or kids who love the novelty of climbing into bed. Many bunk beds come with storage solutions or a trundle for sleepovers.
  • Safety Tip: Always ensure the top bunk has sturdy guardrails.

High Sleeper Beds

  • Best For: Ages 6+.
  • Description: High sleeper beds elevate the sleeping area, freeing up space underneath for a desk, wardrobe, or play area. These beds are ideal for small rooms where space is a premium.
  • Shop Now: High Sleeper Beds

Mid Sleeper Beds

  • Best For: Ages 4-10.
  • Description: Mid sleepers are lower than high sleepers, offering easy access while still providing storage or play space underneath.
  • Features: Often include shelves, drawers, or a pull-out desk.

Cabin Beds

  • Best For: Ages 4+.
  • Description: Cabin beds combine sleeping and storage in one compact design. They often include integrated drawers or shelves, making them perfect for keeping rooms tidy.

Trundle Beds

  • Best For: Sleepovers or multi-use rooms.
  • Description: A trundle bed is a single bed with a pull-out mattress underneath, ideal for accommodating guests or siblings sharing a room temporarily.

Choosing the Right Bed Size for Your Child

1. Measure Your Room

Start by measuring the available space to ensure the bed fits comfortably, leaving room for other furniture and play areas. For smaller rooms, consider space-saving options like bunk beds or mid sleepers.

2. Consider Your Child’s Age

  • Toddlers and Young Children: Toddler beds or small singles provide a safe and cosy fit.
  • Older Kids and Teens: Single or small double beds offer enough room for growth and comfort.

3. Think About Future Needs

Choose a bed size and style that will grow with your child. A single bed with storage, for example, can serve your child from early school years through their teens.

4. Account for Extra Features

Beds with built-in storage or trundles can maximise functionality, particularly in smaller spaces.


UK Bed Size Guide (Quick Reference)

Bed Size Width Length Best For
Cot Bed 53cm 120cm Babies
Toddler Bed 70cm 140cm Ages 2-4
Small Single 76cm 190cm Can be used for young children or compact guest rooms
Single 90cm 190cm Ages 4+, teens, or solo sleepers
Small Double 120cm 190cm Older kids or teens wanting extra space
Double 135cm 190cm Teens with large bedrooms or adults

Bed Styles That Complement Different Room Sizes

Small Bedrooms

  • Opt for space-saving designs like high sleepers or cabin beds.
  • Look for beds with built-in storage or pull-out desks to maximise functionality.

Medium Bedrooms

  • Single or small double beds are great for kids who need more space but still want room for activities or additional furniture.

Large Bedrooms

  • Double beds or even bunk beds can fill the space while providing options for siblings or guests.

Tips for Maximising Bed Longevity

  • Buy Adjustable Beds: Some beds can be modified as your child grows.
  • Opt for Neutral Designs: Choosing a timeless design ensures the bed will suit your child’s changing tastes.
  • Invest in Quality: A well-made bed frame and mattress will last through multiple growth stages.

Conclusion: Making the Right Choice

Choosing the perfect bed for your child requires careful consideration of their age, room size, and future needs. Whether you’re selecting a compact toddler bed or a spacious bunk bed, the key is finding a balance between functionality, style, and comfort. By understanding the options available, you can make an informed decision that supports your child’s growth and provides a restful night’s sleep.

Explore our full range of kids’ beds at Millie & Jones to find the ideal match for your family’s needs.

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