Ideas + Advice

Crib Dimensions: How to Choose the Right Size

Crib in child’s nursery with toys and other furniture

When you’re welcoming a new baby into your life, there are a lot of things to plan out and consider. From setting up the nursery to baby-proofing your home, it’s an exciting time. We’ve outlined everything you need to know about crib dimensions and how to pick out the best one for your baby.

Crib Dimensions: How To Choose The Right Size

Crib Types

When shopping for cribs, the options can be overwhelming. These are a few common crib types and what situations they’re best for.

Standard Crib

Standard crib in black and white nursery

A standard crib is exactly what it sounds like: Your baseline crib option that’s a go-to for most spaces. Made with child-safe materials and with the ultimate safety standards in mind, this is the ideal option for any nursery. Each crib is constructed with safety and quality in mind—from our Fair Trade Certified construction to our GREENGUARD Gold Certified materials—so you can be confident that your baby’s nursery will remain healthy, no matter which crib you choose. 

Our standard cribs are also the baseline for any convertible crib—just add on a conversion kit, which we’ll cover more next.

Dimensions

Our standard crib dimensions cover 51"–56"w x 29"–32"d x 32"–44"h. These variations depend on style and design, so make sure you double check the measurements of your space.

Convertible Crib

Convertible crib with blanket and pillow in room

A convertible crib is our standard crib with an additional conversion kit. This is what you’ll need if you’re looking for a crib that can grow up with your child until you’re ready for a change. You have a few options: You can transition your crib to a toddler bed, and then you can upgrade to a full bed from there. 

Our cribs are rigorously tested to meet or exceed all required and voluntary safety standards. Depending on how you’ll want to convert the bed in the future, you’ll need a specific conversion kit. By purchasing a separate conversion kit with your crib, you’ll have everything you need to transition to a toddler bed, including:

  • Toddler bed conversion kit: With two platform heights, this kit allows you to swap out one side of the crib with safety guardrails to create a toddler bed—without having to put together a whole new bed!
  • Full bed conversion kit: When they outgrow the toddler bed, you can use the backboard with a metal frame or coordinating conversion kit to create a bigger full-size bed. We recommend purchasing any corresponding conversion kits you think you’ll need when you buy the crib—your little one will grow up right before your eyes!
Mid-Century kids' bed with pillows and comforter

Dimensions

The crib dimensions are essentially the same as our standard cribs. Each convertible crib has an adjustable platform to lower the mattress to toddler height. The guardrail adapters for the toddler bed range in width, offering openings between 15.3" and 20". The full bed conversion kits offer standard full bed dimensions whenever you’re ready to change things up.

Storage Crib

White storage crib in child’s nursery

Similar to the cribs we’ve mentioned, storage cribs are pretty standard, but they offer a bit of designated storage space underneath. This is optimal for a small nursery or if you’re always looking for a bit of extra storage space. Plus, the drawers are usable even when you convert this one to a toddler bed!

Dimensions

The standard dimensions of our storage crib are 54"w x 30"d x 39.5"h. The internal drawer dimensions are 23.5"w x 15.25"d x 6"h.

Mini Crib

Similar to standard cribs, mini cribs offer many of the same benefits within a smaller footprint, saving space without losing function. Mini crib dimensions typically cover 40.5"w x 26"d x 36.5"h and need a slightly smaller mattress. They’re the ideal option if you’re planning out a small nursery and don’t need a convertible option.

Crib Mattress Size

Another important component of any crib is the mattress. Thankfully, most standard crib mattresses fit standard cribs, so there shouldn’t be a lot of number crunching going on. Just like you can be confident that a twin mattress will fit a twin bed frame, the same goes for cribs. 

Most crib mattresses are big enough for toddlers, so if you’re opting for a convertible crib, you’ll get plenty of use out of the mattress before your little one gets too big. Plus, with a waterproof surface, cleanup will be easy and help the mattress last longer.

Close up of crib mattress with stars and moons pattern

Firmness

The firmness of a crib mattress is important to consider, both for babies and toddlers. Ours offers two options: One side is firmer for infants, while the other is softer for toddlers. This will ensure they have a safe and comfortable bed.

Safety

Finally, safety is just as much a priority with crib mattresses as it is for the crib itself. Our crib mattress breathes and is made with only the highest quality materials. Both GREENGUARD and CertiPUR-US® certified, it will help your baby (and you) have a peaceful night of sleep.

Be sure to only use a fitted crib sheet that fits the mattress snuggly. This will ensure a safe (and cozy) night of sleep for your little one.

Your baby’s sleep is so important, and having the perfect crib for them will help them sleep through the night. Once you understand which crib dimensions will work best in your space, you’re ready to shop. Be sure they have everything they need, from the best crib bedding to cozy nursery decor that will help their first months be full of joy!

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