5-in-1 vs 4-in-1 vs 3-in-1 Convertible Cribs: What the Numbers Mean

The number on the box counts bed setups, not quality. Here's how to read it.

Short answer: the number in "5-in-1", "4-in-1" or "3-in-1" is how many ways a convertible crib can be set up over the years. A 3-in-1 usually stops at a toddler bed and daybed. A 4-in-1 usually adds a full-size bed. A 5-in-1 adds one more full-bed configuration. Every Romina convertible crib is a 5-in-1: Standard Crib, Toddler Bed, Daybed, Full Size Bed with Footboard and Full Size Bed. Romina's Classic cribs are the shorter path: they convert to a toddler bed and daybed, but not to a full bed.

What does "X-in-1" mean on a convertible crib?

A convertible crib is a crib that turns into other kinds of beds as your child grows. The number in front of "in-1" counts those setups, including the crib itself. So a 3-in-1 has three setups, a 4-in-1 has four and a 5-in-1 has five.

The catch: there is no industry rule for what counts as a stage. One brand may count the toddler bed and the daybed separately, another may count a full bed with and without a footboard as two stages, and some count things like a mini crib or a headboard-only bed. Two cribs with the same number can grow in very different ways. So the most useful question isn't "how many?" but "what is the last bed, and what do I have to buy to get there?"

Here's the typical pattern you'll see when you shop:

Always read the stage list on the product page itself rather than trusting the number alone.

What are the 5 stages of a Romina 5-in-1 convertible crib?

Each of Romina's 5-in-1 convertible cribs lists the same five stages on its product page:

1. Standard Crib (0–24 months). The crib has an adjustable mattress support with 3 height positions, so you can lower the mattress as your baby learns to sit and stand.
2. Toddler Bed (24 months–4 years). A crib-specific toddler rail adds extra protection against rolling out of bed, for example the Toddler Rail for Karisma Convertible Cribs ($275).
3. Daybed (24 months–4 years). The crib converts to a daybed without any additional purchase.
4. Full Size Bed with Footboard (4 years to forever). The full-bed conversion kit turns the crib's headboard and footboard into a full-size bed.
5. Full Size Bed (4 years to forever). A second full-bed configuration. On Karisma, for example, the kit's rails hook onto either the crib's front panel or the optional Karisma Low-profile Footboard, which opens up the room and lets your child get into bed from more sides.

The toddler rail and the full-size bed conversion kit are sold separately. During the crib stage, any mattress you use must be at least 27¼ × 51⅝ inches and no more than 6 inches thick. Our guide to when to convert a crib to a toddler bed covers the signs your child is ready for stage 2.

Which Romina cribs are 5-in-1, and what do they cost?

Eight collections offer a 5-in-1 convertible crib. All are 100% solid wood, Greenguard Gold certified, Made in Europe and offered in 13 finishes. Prices as listed in October 2026:

Inside, every crib takes the same standard crib mattress, so the outer width comes down to design. If you're tight on space, Quadro is the narrowest at 53½" (1360 mm); see our guide to cribs for small nurseries. To line up specs side by side, use the Compare Cribs tool.

What are Romina's Classic cribs, then?

Romina's Classic cribs are the shorter path. They don't have a full-bed conversion kit, so the last bed is a toddler bed or daybed that still uses the crib mattress. Here's what each product page says:

• New York Crib ($1,440): converts to a daybed and toddler bed.
• Uptown Classic Crib ($1,560): described as a 3-in-1 that converts to a daybed and toddler bed.
• Quadro Classic Crib ($1,560): a 3-in-1 (Standard Crib, Toddler Bed and Daybed), 53½" (1360 mm) wide.
• Cleopatra Classic Crib ($1,725): converts to a toddler bed, with symmetrical side panels so it can stand in the middle of the room.

Are Classic cribs smaller than convertible ones? Generally no. A CPSC standard sets the inside dimensions of a full-size crib, so all are similar in size; the difference is the design and the build. Classic cribs are built the same way as the convertibles: 100% solid wood, non-toxic water-based and organic oil finishes, Greenguard Gold certified and offered in 13 finishes. Toddler rails for Classic cribs are sold separately, too.

What do I have to buy for each stage?

The crib price is only part of the story. Here's what each stage needs with a Romina 5-in-1:

Every collection has its own kit, such as the Karisma Conversion Kit or the New York Full-Bed Conversion Kit; browse them all under conversion kits. Each kit has two hardwood side rails, two sets of slats and the hardware. The box spring is included in the form of those slats: no separate box spring needed, just add a standard full-size mattress (54 × 75 in). Toddler rails are listed under toddler rails and low-profile footboards under low-profile footboards.

Want the kit now instead of in four years? The Karisma Crib to College Set ($4,412) bundles the crib, the double dresser and the conversion kit.

5-in-1 vs 3-in-1: which costs less over time?

It depends on whether you'll use the full-size bed. Here's the math with Uptown, which offers a Classic crib, a 5-in-1 convertible and a separate full bed (October 2026 prices, rails left out because both cribs need one for the toddler stage):

If you're sure you'll want a full bed later, the 5-in-1 path costs about $1,030 less in this example. If you won't use the full bed (you plan to move, pass the crib on to a younger sibling or buy a different style later), the Classic crib saves $305 up front. Our cost-per-year guide runs the same numbers over 18 years.

And if you'd rather keep the crib for a second baby and buy the older child a bed of their own, browse full beds. Like the kits, they include the box spring, so you just add a standard full mattress.

How do I pick the right number for my family?

• Pick a 5-in-1 if you want one bed from birth to the teen years and a room that can grow from nursery to big-kid bedroom.
• Pick a 5-in-1 if you like having the choice of a tall footboard or a lower one later.
• Pick a Classic crib if the crib will be handed down to the next baby, or if the room is small and a full bed won't fit there.
• Pick a Classic crib if you want the lower price now and plan to buy a separate bed later.

Then check the room for the last stage, not the first. A standard full mattress is 54 × 75 inches, so the full bed will need much more floor than the crib. Our guide to cribs that convert to a full-size bed covers the full-bed stage step by step, and what size mattress fits a convertible crib covers both mattresses you'll buy.

What should I check before buying any convertible crib?

1. The stage list. Ask what each stage is, not just how many there are.
2. What's included. Is the toddler rail included? The full-bed kit? Do you need a box spring for the full bed?
3. Whether the kit fits your model. Romina kits and rails are crib specific, for example "Antonio Toddler Rail for Convertible Crib #6501 and #6502".
4. Materials. A bed that has to last into the teen years should be built for it. Romina cribs are 100% solid wood, not MDF or particleboard.
5. Safety and certification. Look for CPSC compliance and Greenguard Gold certification on the product page.
6. Warranty. Romina cribs carry a 3-year warranty; see the warranty page.

FAQ

Is a 5-in-1 crib better than a 4-in-1?

Not automatically. The number only counts setups. Compare what the stages are, what's included and how the crib is built. With Romina, the fifth stage is a second full-size bed configuration.

Are all Romina cribs 5-in-1?

All Romina convertible cribs are 5-in-1. The Classic cribs (New York Crib, Uptown Classic, Quadro Classic, Cleopatra Classic) convert to a toddler bed and, depending on the model, a daybed, but not to a full bed.

Is the conversion kit included with a Romina convertible crib?

No. The full-bed conversion kit ($530) and the toddler rail are sold separately. The daybed stage is included. The Karisma and Uptown Crib to College sets include the kit.

Do I need a box spring for the full-size bed?

No. The box spring is included: the kit's two sets of slats support the mattress, so you just add a standard full-size mattress.

At what age does a 5-in-1 crib become a full-size bed?

Romina's product pages list the full-size bed stages from 4 years to forever.

Can I convert a Classic crib to a full bed later?

No. Classic cribs don't have a full-bed conversion kit. If you want a big-kid bed later, you'd buy a separate full or twin bed.

Related guides: Furniture That Grows With Your Child · When to Convert a Crib to a Toddler Bed