6 Best Replacement Stones for Ooni Pizza Ovens (November 2026)
The best Ooni pizza oven replacement stones include the Unicook 13" x 13" Square Pizza Stone for broad 12-inch compatibility, the ROCKSHEAT 13.2" x 13.2" x 0.4" Square for a thinner 12-inch stone, and the BMMXBI Cordierite Pizza Stone Replacement for Ooni for Ooni Koda 16.
On this page (6 sections)
The best Ooni pizza oven replacement stone for many 12-inch models is the Unicook 13-inch square stone, while Koda 16 and Koda 2 Max owners need to match their ovens' distinct stone layouts. Compare the model names, shape and measurements below, then check clearance before you buy.
A replacement can look close in a photo and still have the wrong outline or footprint. We compared the named model fits and dimensions available for these stones, with priority given to options that identify specific Ooni ovens.
If you need a replacement for a Koda 12 or Fyra 12, see our guide to the best Ooni Koda 12 replacement stone. For a stone used in a kitchen oven, our roundup of the best 16 inch pizza stone for oven covers a different size and use.
Our picks at a glance
-
1
Best for broad 12-inch compatibilityUnicook 13" x 13" Square Pizza Stone
9.7/10 our score
See it on Amazon -
2
Best for a thinner 12-inch stoneROCKSHEAT 13.2" x 13.2" x 0.4" Square
9.6/10 our score
See it on Amazon -
3
Best for Ooni Koda 16BMMXBI Cordierite Pizza Stone Replacement for Ooni
9.5/10 our score
See it on Amazon
- 4
Check itbbq777 Cordierite Pizza Stone Replacement Parts
Best for Koda 2 Max replacements - 5
Check itOutspark 13.2" Square Pizza Stone for Ooni
Best for Karu 12 - 6
Check itCuisinart 3 Piece Deluxe Pizza Grilling Pack
Best for a complete pizza set
How we chose Ooni pizza oven replacement stones
The best replacement is the one that matches your oven's original stone shape and dimensions. We compared each option's stated material, size and named model fit, then favored products that make those details clear.
A listed compatible model is a useful starting point, but measure your oven before ordering. Stones in this group include 13-inch squares, a T-shaped Koda 16 piece, a two-stone Koda 2 Max set and a larger round stone that does not name an Ooni model.
We also considered whether a stone's instructions or included accessories solve a practical need. An included scraper or a peel and cutter can be useful, but those extras do not make an ill-fitting stone suitable.
| Product | Best for | Size | Material | Named Ooni fit | Our score |
|---|---|---|---|---|---|
| Unicook 13" x 13" Square Pizza Stone | broad 12-inch compatibility | 13 x 13 x 0.6 in | Cordierite | Fyra 12, Karu 2/12/12G, Koda 12 and Volt 12 | 9.7 |
| ROCKSHEAT 13.2" x 13.2" x 0.4" Square | a thinner 12-inch stone | 13.2 x 13.2 x 0.4 in | Cordierite | Koda 12, Fyra 12, Volt 12 and Ooni 3 | 9.6 |
| BMMXBI Cordierite Pizza Stone Replacement for Ooni | Ooni Koda 16 | 20.5 x 16.7 x 0.6 in | Cordierite | Koda 16 | 9.5 |
| bbq777 Cordierite Pizza Stone Replacement Parts | Koda 2 Max replacements | Cordierite | Koda 2 Max | 9.4 | |
| Outspark 13.2" Square Pizza Stone for Ooni | Karu 12 | 13.2 x 13.2 x 0.4 in | Cordierite | Karu 12, Ooni 3, Koda 12, Fyra 12 and Volt 12 | 9.4 |
| Cuisinart 3 Piece Deluxe Pizza Grilling Pack | a complete pizza set | Cordierite | 8.7 |
The best Ooni replacement stones by model fit
The Unicook and ROCKSHEAT stones name several 12-inch Ooni models, while BMMXBI and bbq777 identify specific larger ovens. Match the model and layout before weighing secondary features.
Unicook 13" x 13" Square Pizza Stone: Best for broad 12-inch compatibility
- 13 x 13 in square
- Cordierite
- Fits several named 12-inch Ooni models
- 1,450°F maximum temperature
A square replacement option for several named 12-inch Ooni models. Its 13-inch dimensions and clearance guidance make measuring the oven interior an important first step.
Pros
- Names several compatible Ooni models
- Reversible smooth surface
- Includes a scraper
Cons
- Requires 1 in of clearance on all sides
- Square shape may not suit ovens with a different stone layout
Unicook is the broadest fit among these picks for several named Ooni models. Its 13 x 13-inch square shape is identified for Fyra 12, Karu 2/12/12G, Koda 12 and Volt 12.
The stone is cordierite, measures 0.6 inches thick and is rated for temperatures up to 1,450°F. Unicook recommends checking the oven or grill interior and leaving 1 inch of clearance on every side for fit and airflow.
Its smooth surface is reversible, and a scraper is included for dough or residue. Unicook says to let the stone cool, scrape away food and hand wash it with warm water; discoloration from use is normal.
Choose it when your oven is one of the named models and its interior dimensions allow the specified clearance. If you have a Koda 16, compare the T-shaped option below instead.
ROCKSHEAT 13.2" x 13.2" x 0.4" Square: Best for a thinner 12-inch stone
- 13.2 x 13.2 x 0.4 in
- Cordierite
- Names Koda 12, Fyra 12, Volt 12 and other models
- 1,400°F maximum temperature
This thinner square stone names several 12-inch ovens, along with Ooni 3. Compare its 13.2-inch footprint with your oven's interior before ordering.
Pros
- Names multiple Ooni and Uuni models
- 0.4 in thickness
- Can be used in an oven or grill
Cons
- Model fit still needs a size check
- Does not name Karu 2 or Koda 16
ROCKSHEAT is a thinner square option for several models, including Koda 12, Fyra 12, Volt 12 and Ooni 3. It also names Uuni 2S and Uuni 2, which can help if you have an older oven.
The cordierite stone measures 13.2 x 13.2 x 0.4 inches and is rated up to 1,400°F. Its thickness differs from Unicook's, so compare it with the original stone and check that the oven has room for its footprint.
ROCKSHEAT says the stone can be used without seasoning or conditioning. It is also described for use in an oven or grill, and for baking foods such as bread and cookies.
Pick this one if you want a 0.4-inch square and your model is among the named fits. For a direct comparison of the 12-inch choices, read our Best Pizza Stone For Home Pizza guide.
BMMXBI Cordierite Pizza Stone Replacement for Ooni: Best for Ooni Koda 16
- T-shaped stone
- 20.5 x 16.7 x 0.6 in
- Names Ooni Koda 16
- 1,400°F maximum temperature
The T-shaped layout and stated dimensions target the Koda 16. Compare the shape and size with your original stone before buying.
Pros
- Specifically names Koda 16
- T-shaped replacement
- Cordierite material
Cons
- Does not name other Ooni models
- Shape makes exact measurement especially important
BMMXBI is the model-specific choice here for Ooni Koda 16. Its replacement is T-shaped, measuring 20.5 x 16.7 x 0.6 inches, so the outline matters as much as the overall width and depth.
The stone is described as cordierite and rated up to 1,400°F. BMMXBI advises comparing the replacement's size and model with the original part before buying.
That check is especially useful for a T-shaped stone because a square replacement with a similar overall width will not match the same layout. The product is also described for baking bread and cookies, but its main reason to consider it here is the Koda 16 fit.
Choose it only after confirming the Koda 16 model and the original stone measurements. If your oven is a 12-inch model, the square options above name more relevant fits.
bbq777 Cordierite Pizza Stone Replacement Parts: Best for Koda 2 Max replacements
- Two-piece set
- Cordierite
- Designed for Ooni Koda 2 Max
- 1,400°F maximum temperature
This two-piece set is designed for the Koda 2 Max. Its pack count is useful when your oven's original stone layout uses two pieces.
Pros
- Names Koda 2 Max
- Two stones in the set
- Cordierite material
Cons
- Does not provide dimensions here
- Fit should be checked against the original parts
bbq777 is the only pick here that identifies Ooni Koda 2 Max and comes as a two-stone set. That pack layout is worth checking against your oven's original arrangement before ordering.
The stones are cordierite and rated up to 1,400°F. The available size description identifies the oven model rather than giving individual stone dimensions, so compare the original parts and confirm fit before you buy.
The maker describes these stones for pizza, bread, pies, cookies and pastries. Its care advice is to clean with a damp sponge and avoid soaking the stone for a long time.
Pick this set when you have a Koda 2 Max and need the two-piece arrangement. For a different way to bake in a compatible Ooni, first check which Ooni pizza ovens work with a rotating stone.
Outspark 13.2" Square Pizza Stone for Ooni: Best for Karu 12
- 13.2 x 13.2 x 0.4 in
- Cordierite
- Names Karu 12 and other 12-inch models
- 1,400°F maximum temperature
This square stone explicitly names Karu 12 among several compatible models. Check your oven's original stone measurements before choosing it.
Pros
- Names Karu 12 and other models
- 0.4 in thickness
- Can be used in an oven or grill
Cons
- Does not name Karu 2 or Koda 16
- Fit depends on the oven's interior dimensions
Outspark's square stone explicitly names Karu 12, along with Ooni 3, Koda 12, Fyra 12 and Volt 12. Its 13.2 x 13.2 x 0.4-inch dimensions are close to ROCKSHEAT's, so model fit and exact clearance can help distinguish the two.
The stone is cordierite and rated up to 1,400°F. Outspark describes using it in an oven or grill, and recommends letting it cool before scraping off residue and washing it with warm water.
Karu 12 owners may find its named compatibility useful, while the other listed models have more than one option in this roundup. Compare the original stone dimensions before choosing based on the model list alone.
Choose Outspark when your oven is a named model and the measurements work. If you are weighing stone against steel for a home oven, our guide to Which Is Better Pizza Stone or Pizza Steel? explains the different baking surfaces.
Cuisinart 3 Piece Deluxe Pizza Grilling Pack: Best for a complete pizza set
- 15 in round cordierite stone
- Pizza peel and cutter included
- For oven or grill use
This set adds a round stone, peel and cutter, but it is not described as an Ooni replacement. Check your oven's stone shape and interior before considering it.
Pros
- Includes a peel and cutter
- Cordierite stone
- For oven or grill use
Cons
- Does not name an Ooni model
- Round shape may not match an Ooni stone
Cuisinart is a complete pizza set rather than a clearly identified Ooni replacement. It includes a 15-inch round cordierite stone, a peel and a cutter, but it does not name an Ooni oven as compatible.
The round shape is the key fit question. Ooni ovens in this roundup use square, T-shaped or two-piece replacement layouts, so don't assume that a 15-inch round stone can replace an oven's fitted stone.
The set may suit a separate oven or grill setup where a round stone fits. Its peel and cutter add tools for moving and slicing pizza, which makes this a broader accessory choice than the model-specific replacements.
Consider it only after checking the space and shape your cooking setup supports. For an Ooni replacement, choose one of the stones that names your model and matches the original outline.
What size replacement stone fits an Ooni oven?
The correct size is the one that matches your oven's stone layout and leaves the required room around it. Measure the original stone and the oven interior rather than relying on “12-inch” in a product name.
Unicook calls for 1 inch of clearance on all sides. The 13.2-inch stones from ROCKSHEAT and Outspark have a slightly larger footprint than Unicook's 13-inch square, so check width and depth carefully.
For the Koda 16, compare the T-shaped BMMXBI stone with the original outline. For Koda 2 Max, check that the two-stone bbq777 pack matches the oven's parts and arrangement.
A stone can be too wide even if its length seems right. Leave room for airflow and avoid forcing a replacement into the oven.
Does cordierite matter for an Ooni stone?
Cordierite is the material named for five of the six options here. The supplied product descriptions also give maximum temperature figures, but those figures do not confirm that a stone fits a particular oven.
Unicook specifies up to 1,450°F; ROCKSHEAT, BMMXBI, bbq777 and Outspark each specify up to 1,400°F. Match shape and size first, then compare material and care guidance.
Cuisinart also identifies its stone as cordierite, but its 15-inch round shape is not presented as an Ooni replacement. A shared material does not make two stones interchangeable.
If your original stone is damaged, follow the oven maker's guidance for a replacement and use. Do not use a cracked stone in a high-heat oven.
How should you care for a replacement stone?
Let a pizza stone cool fully before cleaning it. Sudden temperature changes and long soaking can harm some stones, so follow the care advice for the specific model you choose.
Unicook recommends scraping off food and hand washing the cooled stone with warm water, and says discoloration is normal. See pizza stone cleaning brushes for brush options.
Outspark also advises cooling the stone before scraping and washing.
bbq777 says to use a damp sponge and avoid long soaking. For more detail on residue and routine care, see How to Clean a Pizza Oven Stone?.
Do not add oil to cordierite: Unicook specifically says not to season its stone with oil or grease. Keep the stone dry before heating it again.
Which Ooni replacement stone should you choose?
Choose by model and shape first: Unicook is the broad 12-inch option, BMMXBI names Koda 16, and bbq777 names Koda 2 Max with a two-stone pack. For Karu 12, compare Outspark's stated fit with the measurements of your original stone.
If you need a square for Koda 12 or Fyra 12, compare Unicook and ROCKSHEAT by footprint, thickness and required clearance. If no option names your model, check Ooni's guidance and confirm dimensions before ordering.
Our score weighs specs, features and buyer feedback against what you're shopping for. Measure the original stone and oven interior before you buy, especially when shape or clearance differs.
The best Ooni Koda 12 replacement stone guide is the next stop for owners comparing square options. Pick a model-specific replacement when possible, and confirm that its size and outline match your oven.
Our top 3 picks at a glance
-
1
Best for broad 12-inch compatibility
Unicook 13" x 13" Square Pizza Stone
9.7/10 our score
See it on Amazon -
2
Best for a thinner 12-inch stone
ROCKSHEAT 13.2" x 13.2" x 0.4" Square
9.6/10 our score
See it on Amazon -
3
Best for Ooni Koda 16
BMMXBI Cordierite Pizza Stone Replacement for Ooni
9.5/10 our score
See it on Amazon
Frequently asked questions
How do I choose an Ooni pizza oven replacement stone?
Match the oven model, stone shape and measurements first. Check whether your oven uses one square stone, a T-shaped stone or a two-piece layout, then compare the replacement dimensions with the original.
Leave any clearance the stone maker specifies, and do not assume that stones described as 12-inch compatible all have the same footprint.
Can I use a 13-inch square stone in every Ooni 12 oven?
No. A 13-inch square stone may fit some named models, but model names and interior dimensions vary.
Unicook names Fyra 12, Karu 2/12/12G, Koda 12 and Volt 12, and asks buyers to check the interior and leave 1 inch of clearance on every side.
Measure before ordering.
Which replacement stone is for Ooni Koda 16?
The BMMXBI replacement names Ooni Koda 16 and uses a T-shaped design measuring 20.5 x 16.7 x 0.6 inches. Compare those measurements and the outline with your original stone before buying.
A square stone for a 12-inch oven is not an equivalent substitute.
Does a replacement pizza stone need to be seasoned?
The ROCKSHEAT stone says no seasoning or conditioning is required. For care and heating, follow the instructions for the stone you choose and let it cool before cleaning.
Cordierite can discolor with use; Unicook says those areas are normal and do not require cleaning.
Can I clean an Ooni stone with soap and water?
Care instructions differ by stone. Unicook says to hand wash its cooled stone with warm water, while bbq777 advises against soaking its stones for a long time.
Wait until the stone is completely cool before cleaning, and check the instructions for your specific replacement.
See our pizza oven stone cleaning guide for more care pointers.
