Quick Summary
The convertible crib total cost is the crib price plus the toddler rail, full-size conversion kit, and mattresses, since most accessories are sold separately. The HushCrib 4-in-1 Classic costs $639.00, its toddler rail $55.00, and the Oxford Baby Lazio $199.00 before accessories.
- Crib and mattress are the first purchase; later stages need extra parts.
- HushCrib Classic 4-in-1 is listed at $639.00 with a storage trundle.
- The HushCrib toddler bed conversion rail is listed at $55.00 separately.
- Oxford Baby Lazio 4 in 1 is listed at $199.00 before conversion accessories.
- Confirm each conversion kit matches your exact crib model before ordering.
Table of Contents
- What a Convertible Crib Really Costs Over Time
- How Much Conversion Kits Cost
- Converting a Crib Into a Full-Size Bed: The Full Cost Picture
- Are Conversion Kits Sold Separately?
- Matching Conversion Kits to Your Crib Model
- Mattress Requirements and Other Hidden Costs
- Booking Your Crib Setup at Bungle Nursery Cribs
- Frequently Asked Questions
What a Convertible Crib Really Costs Over Time
A convertible crib is designed to be used across several stages, so the convertible crib total cost includes more than the crib itself. The crib is only the first purchase. Over time, most families also need a toddler conversion piece, a bed conversion kit, and a mattress sized for each stage.
Think of the total cost in three phases:
- Infant stage: the crib and a crib mattress
- Toddler stage: a toddler rail or guard rail, and possibly a new mattress
- Full-size bed stage: a conversion kit and a full-size mattress
Our pick for families planning ahead is the HushCrib 4-in-1 Classic Convertible Baby Crib with Storage Trundle, listed at $639.00. Its listing shows the full crib with its included conversion parts. Its pull-out trundle adds storage or an extra sleeping space. The one drawback is that the toddler rail is sold separately, so budget for it from the start.
Compare that with the Oxford Baby Lazio 4 in 1 Convertible Crib at $199.00. It converts through the same stages, but the conversion accessories are still a separate purchase.
How Much Conversion Kits Cost
Conversion kits are where the total cost really shifts. Most convertible cribs described in their listings do not include the parts needed to reach the toddler bed or full-size bed stages. Those accessories are sold separately.
Toddler Bed Rail Pricing
A toddler rail is an accessory designed for the toddler bed configuration. For the HushCrib Classic line, the HushCrib Classic 4-in-1 Crib Toddler Bed Conversion Rail is listed at $55.00. The product page shows what the rail includes. The rail is designed for the HushCrib Classic 4-in-1 Convertible Crib, so confirm your exact model before ordering.
Full-Size Bed Conversion Pricing
Full-size bed conversion kits vary by crib model and are sold separately from the crib. Oxford Baby's Phoenix, Lazio and Park Ridge collections reference a separate full-size bed conversion kit.
Converting a Crib Into a Full-Size Bed: The Full Cost Picture
A full-size bed conversion is the most expensive stage of a convertible crib's life, because three separate purchases stack on top of each other: the crib you already own, the full-size conversion kit, and a full-size mattress. Looking at the convertible crib total cost at this stage shows why. The kit itself is usually the smallest of the three line items, but it is the one that determines whether the other two are even usable.
| Cost component | Typical range | What drives the number |
|---|---|---|
| Convertible crib (already purchased) | $199.00-$639.00 | Brand, storage features, wood type |
| Full-size conversion kit | Roughly $100.00-$250.00 depending on model and finish | Whether the kit includes side rails, a footboard, or a headboard adapter |
| Full-size mattress | Roughly $150.00-$400.00 | Innerspring vs. foam, thickness, certification |
| Bedding and frame extras | $0.00-$150.00 | Whether the kit includes a center support or slat roll |
Those ranges are not arbitrary. A kit that includes both side rails and a footboard costs more than a kit that only supplies rails because the crib's existing headboard is reused. Kits that require a separate slat roll or center support rail push the total higher still, and some manufacturers sell those pieces separately from the conversion kit itself. Before you assume the kit price is the whole cost, read the kit's "what's included" list line by line.
A worked total for a mid-range crib
The Oxford Baby Lazio 4 in 1 Convertible Crib is listed at $199.00. Toddler rails, full-size conversion kits and mattresses are sold separately, so budget for them in addition to the crib price.
For the HushCrib 4-in-1 Classic Convertible Baby Crib with Storage Trundle at $639.00, the math is different. The higher crib price buys the trundle, which can replace a separate dresser or guest sleeping surface. If you would otherwise spend $200.00-$400.00 on a dresser, the trundle offsets a meaningful share of the crib premium. The toddler rail is still sold separately at $55.00, and the full-size kit and mattress are still on you.
The total-cost-of-ownership view
Most product pages list the crib price and stop. A more useful way to compare two cribs is to add four numbers before you buy: Is a Toddler Bed Rail for a Convertible Crib Worth It?
- Crib sticker price
- Toddler rail price for that exact model
- Full-size conversion kit price for that exact model
- Full-size mattress price
Whichever crib wins on that four-number total is the cheaper crib over its full life, even if it loses on sticker price. Run the same four numbers for every crib on your shortlist to compare full-life cost.
Universal vs. proprietary kits
Conversion kits are model-specific, so confirm that a kit matches your exact crib model before buying.
Watch out: confirm that any kit's listing names your exact crib model and collection before ordering.
HushCrib 4-in-1 Classic Convertible Baby Crib with Storage Trundle →
Resale and the kit's second life
A conversion kit also affects what the furniture set is worth when you are done with it. A crib sold with its matching toddler rail and full-size kit in the original finish sells faster and for more than a crib sold alone, because the buyer avoids the same availability problem you are trying to avoid. Keep the kit's box, hardware bag, and instructions with the crib, and store them together, a complete set is the difference between a quick sale and a listing that sits. Keeping the matching pieces together preserves their resale appeal and makes multifunctional furniture value easier to judge against the cost of buying each piece separately.
Are Conversion Kits Sold Separately?
In most cases, yes. The Oxford Baby Phoenix, Lazio and Park Ridge listings state that the toddler guard rail and full-size bed conversion kit are sold separately.
The HushCrib Classic 4-in-1 also lists its toddler rail as a separate accessory. If you buy a convertible crib, assume the later-stage parts are an additional purchase unless the listing explicitly says otherwise.
Matching Conversion Kits to Your Crib Model
Conversion kits are not universal. A rail or kit made for one crib usually will not fit another, so match the accessory to your exact model number before you buy.
Before ordering, confirm three things:
- The exact crib model and collection name
- The compatible toddler rail or conversion kit for that model
- The finish, if the accessory is offered in more than one color
Mattress Requirements and Other Hidden Costs
Mattresses are sold separately for the HushCrib, Lazio, Phoenix and Park Ridge cribs. Plan for at least two mattresses: a crib mattress for the infant stage and a full-size mattress for the bed stage. For guidance on picking one that suits a mini or converted crib, see How to Choose a Crib Mattress for a Mini Crib. Some families also buy a toddler mattress or use a crib mattress in a toddler bed configuration, which changes the math again.
Mattress sizing by stage
- Crib stage: a standard crib mattress, typically 28 by 52 inches, sold separately from the crib.
- Toddler stage: many toddler rails are designed to work with the same crib mattress, so no new mattress is needed unless the crib is a mini or non-standard size.
- Full-size stage: a standard full-size mattress, typically 54 by 75 inches. This is the purchase most families forget to budget for, and it is usually the most expensive single item after the crib itself.
Shipping and delivery
Large cribs ship in heavy cartons, and delivery fees are not always shown until checkout. A crib with a trundle or storage drawer ships in more than one box, and some carriers charge per box or require a scheduled delivery. Confirm the delivery fee and whether the carrier will bring the boxes inside before you order, because a curbside drop-off of a 100-pound carton is a real logistics problem in an apartment building.
Assembly tools and hardware
Most cribs need an Allen wrench or other hardware that may not be included, and conversion kits sometimes ship with their own hardware bag that must be kept separate from the crib's. Keep every hardware bag labeled by stage, crib, toddler, full-size, because the bolts are often different lengths and mixing them up is a common assembly error.
Storage and logistics for the conversion rails
A practical storage plan:
- Keep the rails in their original cartons, flat, in a dry space such as a closet, garage, or under a bed.
- Tape the hardware bag to the inside of the carton so it does not migrate.
- Label each carton with the crib model number and the stage it belongs to.
- Photograph the hardware bag and the kit's parts list before storing, so you can confirm completeness later.
Other costs to budget for
- Bedding: crib sheets do not fit a full-size mattress, so plan for a new sheet set and mattress pad at the full-size stage.
- Bed frame or support: some conversion kits reuse the crib's existing support system, while others need a separate slat roll or center support.
- Replacement parts: if a hardware bag is lost during storage, replacement hardware from the manufacturer can carry a shipping charge and a wait.
Our advice is to set a total budget that covers the crib, the toddler rail, the full-size kit, two mattresses, and a small contingency for shipping and replacement hardware. Planning for the whole cycle prevents surprise charges two years from now.
Booking Your Crib Setup at Bungle Nursery Cribs
At Bungle Nursery Cribs, we want every parent to know the full cost before they buy. We carry convertible cribs and matching accessories, and our team can help you confirm compatibility before you order.
Frequently Asked Questions
How much does a convertible crib cost with conversion kits?
The HushCrib 4-in-1 Classic Convertible Baby Crib with Storage Trundle is listed at $639.00, the Oxford Baby Park Ridge at $259.00, the Oxford Baby Phoenix at $299.00 and the Oxford Baby Lazio at $199.00. Add the HushCrib Classic Toddler Bed Conversion Rail at $55.00 when you reach the toddler stage. Full-size bed conversion components are sold separately for the Oxford Baby models, so confirm their current prices before budgeting, and remember that mattresses for each stage are an additional cost.
Are conversion kits included with convertible cribs?
Usually not. The HushCrib Classic toddler rail is sold separately, and the Oxford Baby Phoenix, Lazio and Park Ridge list their toddler guard rails and full-size bed conversion kits as separate purchases. The HushCrib Classic does include a pull-out trundle. Check each product listing before ordering, because a crib that is advertised as convertible still needs the matching components to change configuration.
Do convertible cribs need a different mattress for each stage?
Often yes. Crib mattresses are sized for the crib, while toddler beds and full-size beds typically need a different mattress. The HushCrib and Oxford Baby listings state that mattresses are sold separately, so plan for a separate purchase at each stage. Confirm the mattress dimensions your specific model requires before buying, and follow the manufacturer's instructions for each configuration.
Should I buy conversion accessories when I buy the crib?
Buying the matching rail or full-size bed kit early lets you plan the full cost up front instead of discovering it years later.
