Convertible Bassinet to Crib to Toddler Bed | Three Stages In One

A convertible bassinet to crib to toddler bed is a single furniture system that transforms from a newborn bassinet into a full-size crib and later into a toddler bed, saving hundreds of dollars and years of repurchasing.

Most parents buy a bassinet, then a crib, then a toddler bed — three separate purchases across three years. A single convertible system like the Babyletto Rolli 9-in-1 skips the second and third buying trips entirely. It starts as a portable elevated bassinet for the first months, converts to a standard full-size crib when the baby rolls over, and later becomes a toddler bed with a guardrail. The same mattress fits all three stages, the conversion kits are usually included in the box, and the total cost often matches — or beats — buying separate pieces.

The Real Difference Between A Bassinet-To-Crib And A Three-Stage Convertible

A standard convertible crib transitions from crib to toddler bed and sometimes to a daybed, but it never starts as a bassinet. A true dual-stage convertible like the DaVinci Colby GROW adds a portable bassinet mode before the crib stage, giving you a compact sleeping space for the newborn period that sits beside your bed. After the baby outgrows the bassinet, you lower the mattress and use it as a full crib. The bed then converts to a toddler bed with a low rail. The key spec to look for is “bassinet to crib” or “all-stages” in the product name — regular 4-in-1 and 3-in-1 cribs start at the crib stage only.

Which Models Actually Do All Three?

The market has three serious contenders for a single system that covers newborn through toddler years, and one clear standout.

The Babyletto Rolli 9-in-1 All-Stages Crib is the first-to-market product that includes every conversion kit at no extra cost. It arrives with the bassinet kit, the toddler bed rail, and the junior bed conversion in the box. The bassinet dimensions are 29.75 inches long by 20 inches wide — compact enough for bedside use. The crib then expands to standard full size, and the toddler bed uses the same mattress and frame with a low rail that toddlers can climb in and out of safely. MSRP runs around $599 to $699 depending on color, which covers nine total configurations including daybed and full bed modes.

The DaVinci Colby GROW 6-in-1 starts as a portable bassinet on wheels, then converts to a full crib, a daybed, a junior bed, and a full bed. It costs $449 to $499. The bassinet stage is wider than the Rolli — 55 inches long and 29.5 inches wide — so it takes up more floor space but offers more room for a growing newborn. The mattress support holds 50 pounds, and the slats tested to 135 pounds.

The Nestig Cloud Crib takes a different path: it starts as a mini crib, converts to a full crib, and ends as a toddler bed. The mini stage is smaller than a full bassinet but larger than a traditional bassinet, running $549 to $649. The separate toddler conversion kit may be required depending on which bundle you buy.

Quick Comparison: Three Full-Stage Convertibles

How To Convert A Crib To A Toddler Bed: The Exact Steps

The process takes about fifteen minutes once you have the right kit. Most conversion failures happen because the kit is missing or the wrong model, so before starting, confirm your crib is marked “3-in-1,” “4-in-1,” or “9-in-1” with toddler bed listed as a stage. Per the manufacturer guidelines from Newton Baby, here is the order that works across the major brands.

Remove the crib mattress and set it aside. Detach one long side of the crib frame — usually the side opposite the headboard — by unscrewing the bolts. Set the mattress support to its lowest position so the child cannot climb over the rail later. Attach the conversion brackets to the toddler guardrail sleeve, then position the rail across the open side of the bed. Secure it firmly with the provided bolts, and place the bed against a wall with the headboard flush, away from windows, cords, and outlets. A snug fit on the mattress prevents entrapment: the mattress edges should touch the frame with no gaps larger than a finger.

Age, Height, And When To Make The Switch

Most toddlers transition between 18 months and 3 years, but the hard signals are height and climbing behavior. If your child reaches 35 inches tall or starts trying to climb out of the crib, it is time to convert — regardless of age. The crib rail at its lowest setting prevents falls, but a child who can hoist a leg over the railing while standing on the mattress has outgrown the crib stage. Keep the toddler bed against a wall with the guardrail on the open side, and never place it near curtain cords or floor lamps.

Which Model Makes The Most Sense For Your Nursery?

The Babyletto Rolli 9-in-1 costs more upfront but covers bassinet duty from day one and never asks you to buy another kit. It suits parents who want one delivery, one assembly, and no shopping years later. The DaVinci Colby GROW is the budget-friendly option with wheels for rolling the bassinet between rooms, but its larger footprint means it occupies more nursery space from the start. The Nestig Cloud Crib works well for small nurseries where a mini crib fits better than a full bassinet, but the separate toddler kit adds a future purchase.

Buying a convertible bassinet to crib to toddler bed system eliminates the middle purchases entirely. If you are ready to compare all the options side by side and see the latest pricing, the team here has tested and ranked the best bassinet to crib convertible models available right now.