4-in-1 vs 6-in-1 Crib: Extra Conversions

What 4-in-1 and 6-in-1 Mean on a Crib Listing

The numbers in a crib title tell you how many different bed types the piece can become over its life. A 4-in-1 convertible crib changes into four configurations. A 6-in-1 convertible crib changes into six. The first stage is always a full-size crib. The extra stages are meant to let the same furniture grow with a child from infancy into the teen years.

The exact list of stages varies by model. A 4-in-1 usually includes a toddler bed, a daybed, and a full-size bed. A 6-in-1 adds two more, such as a twin bed or a full-size bed with a different headboard and footboard. Some models also include a sofa configuration. The listing title or bullet points will state which stages are included.

The Four Common Stages in a 4-in-1 Crib

The four stages of a typical 4-in-1 crib are:

Crib: The full-size crib with all four sides up, used from birth until the child is ready for a toddler bed.

Toddler bed: The front rail is removed or replaced with a shorter guardrail. The mattress stays at a low height, and the child can get in and out on their own.

Daybed: The front rail is removed entirely, leaving an open side. The mattress remains at the same height as the toddler bed stage. This configuration is often used as a reading or lounging spot.

Full-size bed: The crib converts into a standard full-size bed. This usually requires a separate conversion kit (sold separately) that adds a headboard and footboard. The mattress size changes to a full-size mattress.

The Extra Stages in a 6-in-1 Crib

A 6-in-1 crib includes the same four stages as a 4-in-1 plus two additional configurations. The most common extra stages are:

Twin bed: The crib converts into a twin-size bed. This requires a conversion kit that changes the frame to fit a twin mattress. The twin bed is narrower than a full-size bed, which can be useful for smaller rooms.

Full-size bed with headboard and footboard: Some 6-in-1 models offer two different full-size bed looks. For example, one version uses the original crib ends as a headboard and footboard, and another version uses a separate panel set to create a more traditional bed frame.

Sofa: A few 6-in-1 cribs include a sofa configuration. The crib converts into a small couch by removing the front rail and adding a back cushion. This stage is meant for lounging rather than sleeping.

The exact extra stages are listed in the product description. Not all 6-in-1 cribs include a twin bed; some offer two full-size bed variations or a sofa instead.

Conversion Kits and Included Parts

The conversion from crib to toddler bed or daybed usually uses parts that come with the crib. The toddler guardrail is often included, and the daybed stage requires no extra parts.

The conversion to a full-size bed, twin bed, or sofa almost always requires a separate conversion kit. The listing will say whether the kit is included in the box or sold separately. Some brands include the full-size bed conversion kit, while others sell it as an add-on.

Before buying, check the listing for phrases like "conversion kit included" or "conversion kit sold separately." If the kit is not included, factor that into your planning. The kit may be available from the same brand or through the seller. For more on choosing a crib, see our best crib guide.

Are the Extra Conversions Worth It?

The value of the extra stages depends on how long you plan to use the furniture and the room layout. If you want a single piece of furniture that serves from infancy through the teen years, a 6-in-1 crib can be a good choice. The twin bed or full-size bed stages let the child keep the same bed frame into high school.

If you expect to move the child to a different bed after the toddler years, the extra stages may not be used. A 4-in-1 crib already provides a full-size bed, which many families find sufficient. The twin bed stage in a 6-in-1 is narrower, which can be helpful in a small room, but a full-size bed also fits most bedrooms.

6-in-1 cribs are typically in a higher price tier than 4-in-1 models. The extra conversion kits, if not included, add to the total cost. Compare the listed stages and included parts to decide which set of conversions matches your long-term plan.

How to Read a Listing for Conversion Stages

When comparing cribs, look for the number in the title (4-in-1, 6-in-1, etc.) and then read the bullet points or description for the exact stages. The listing may say "converts to toddler bed, daybed, and full-size bed" for a 4-in-1, or "adds twin bed and sofa" for a 6-in-1.

Check whether the conversion parts are included. Some listings state "full-size conversion kit included" or "toddler guardrail included." If the listing does not mention a kit, assume it is sold separately. You can contact the seller or visit the brand's website for details.

Also note the mattress size required for each stage. The crib stage uses a standard full-size crib mattress. The toddler bed and daybed use the same crib mattress. The full-size bed and twin bed stages require a different mattress size, which is a separate purchase.

What to pick for your situation

Questions

What does 4-in-1 mean on a crib?

4-in-1 means the crib converts into four bed types: a full-size crib, a toddler bed, a daybed, and a full-size bed. The conversion to a full-size bed usually requires a separate kit. See our 4-in-1 crib guide for more.

What does 6-in-1 mean on a crib?

6-in-1 means the crib converts into six bed types. It includes the four stages of a 4-in-1 plus two additional stages, such as a twin bed, a full-size bed with a different headboard, or a sofa. The exact stages vary by model. Our 6-in-1 crib guide has examples.

Are conversion kits included with a 6-in-1 crib?

Some 6-in-1 cribs include the conversion kit for the extra stages, while others sell it separately. Check the listing for phrases like "conversion kit included" or "sold separately."

Can I use a 6-in-1 crib as a full-size bed?

Yes, a 6-in-1 crib includes a full-size bed stage, just like a 4-in-1. It may also offer a second full-size bed configuration with a different headboard and footboard.

Do I need a different mattress for each stage?

The crib, toddler bed, and daybed all use the same full-size crib mattress. The full-size bed and twin bed stages require a mattress of that size, which is a separate purchase.