6 Best Replacement Stones for Ooni Koda 12 and Fyra 12 (October 2026)

The best Ooni Koda 12 and Fyra 12 replacement pizza stones include the Unicook 13" x 13" Square Pizza Stone for a balanced 12-inch fit, the ROCKSHEAT 13.2" x 13.2" x 0.4" Square for a thinner replacement, and the Outspark 13.2" Square Pizza Stone for Ooni for a multi-oven option.

On this page (5 sections)

1. How we compared Ooni Koda 12 replacement stones
2. The best Ooni Koda 12 and Fyra 12 replacement stones
3. How do I check a replacement stone’s fit?
4. Should you choose a 0.4 in, 0.47 in or 0.6 in stone?
5. Which Ooni replacement stone should you choose?

The Unicook 13 x 13 in cordierite stone is the best Ooni Koda 12 replacement stone here, with stated compatibility for the Koda 12 and Fyra 12. Measure your oven’s interior and check clearance before choosing a replacement.

A replacement stone needs to fit the oven’s cooking area and leave room for airflow. If you are considering a stone that turns while baking, see Ooni rotating stone fit.

These options vary in footprint, thickness and material descriptions, so compare the dimensions and compatibility for your oven.

For a broader look at stone sizes for home ovens, see Best Pizza Stone For Home Pizza. If you’re choosing a stone for a specific crust style, compare the Best Pizza Stone For Neapolitan Pizza.

Our picks at a glance

1. 1
   Best for a balanced 12-inch fit

   Unicook 13" x 13" Square Pizza Stone

   9.7/10 our score

   See it on Amazon
2. 2
   Best for a thinner replacement

   ROCKSHEAT 13.2" x 13.2" x 0.4" Square

   9.6/10 our score

   See it on Amazon
3. 3
   Best for a multi-oven option

   Outspark 13.2" Square Pizza Stone for Ooni

   9.4/10 our score

   See it on Amazon

4. 4

   SafBbcue Cordierite Pizza Stone for Ooni Koda

   Best for Koda 16 owners
   Check it
5. 5

   Mimiuo 13" Square Pizza Stone Fits

   Best for a 13-inch footprint
   Check it
6. 6

   Tmozyar 15.5" Pizza Stone for BGE M

   Best for a Big Green Egg
   Check it

How we compared Ooni Koda 12 replacement stones

The top choices name compatibility with the Koda 12 and Fyra 12 and give dimensions for comparison. For more model-specific gear, see Ooni Koda 12 accessories.

We compared size, thickness, material, stated oven compatibility and care details.

Our score weighs specs, features and buyer feedback against what you’re shopping for. A square stone that names both 12-inch ovens ranks ahead of parts described for larger or different grills.

The best Ooni Koda 12 and Fyra 12 replacement stones

Unicook is the strongest match for buyers seeking one stone with stated compatibility for both 12-inch ovens, while ROCKSHEAT and Outspark offer thinner options. Check every dimension against your oven before you order.

1

Unicook 13" x 13" Square Pizza Stone: Best for a balanced 12-inch fit

9.7/10Our score

• 13 x 13 in square
• 0.6 in thick
• Cordierite
• Compatible with Koda 12 and Fyra 12

A square cordierite stone with stated compatibility for Ooni Koda 12 and Fyra 12 ovens. Unicook recommends leaving 1 in of clearance on all sides.

See it on Amazon

Pros

• Stated fit for Koda 12 and Fyra 12
• Reversible smooth surface
• Includes a scraper

Cons

• Thicker than the 0.4 in options
• Needs 1 in of clearance on every side

Unicook’s 13 x 13 in square cordierite stone is a size to consider for either oven. It’s 0.6 in thick, and Unicook names the Ooni Fyra 12 and Koda 12 among compatible models.

The thickness may matter if you have limited vertical room. Check the oven’s interior space and floor dimensions, and leave the 1 in clearance Unicook recommends on all sides.

The stone has a reversible smooth surface, and a plastic scraper is included. Unicook says to place it in a cold oven or grill before preheating, then hand wash it with warm water after it has cooled.

Choose it for a 13 in square footprint and named compatibility with both ovens. It’s the top fit in this group when its 0.6 in thickness works with your oven’s available space.

2

ROCKSHEAT 13.2" x 13.2" x 0.4" Square: Best for a thinner replacement

9.6/10Our score

• 13.2 x 13.2 in square
• 0.4 in thick
• Cordierite
• Compatible with Koda 12 and Fyra 12

This 0.4 in cordierite option is described as compatible with Koda 12 and Fyra 12 ovens. Its footprint is slightly larger than the Unicook stone.

See it on Amazon

Pros

• Stated compatibility with both ovens
• Thinner 0.4 in profile
• No seasoning required

Cons

• 13.2 in width needs careful clearance checks
• Thinner than Unicook's 0.6 in

ROCKSHEAT offers a 13.2 x 13.2 in square cordierite stone that is 0.4 in thick. It names the Ooni Fyra 12 and Koda 12, along with several other Ooni and Uuni ovens.

The 13.2 in width can affect clearance. Measure the cooking floor and leave enough space for airflow before relying on the compatibility claim.

The thinner profile is the key distinction from Unicook’s 0.6 in option. ROCKSHEAT says the stone can go straight into an oven or grill without seasoning.

Choose it if your oven fits the 13.2 in footprint and you prefer a 0.4 in stone. If your interior is close to 13 in, a 13 in option may be easier to assess.

3

Outspark 13.2" Square Pizza Stone for Ooni: Best for a multi-oven option

9.4/10Our score

• 13.2 x 13.2 in square
• 0.4 in thick
• Ceramic in specs
• Compatible with Koda 12 and Fyra 12

Outspark gives a 13.2 in square size and names several Ooni 12 models as compatible. Its description calls the material cordierite, while its specs call it ceramic.

See it on Amazon

Pros

• Names Koda 12 and Fyra 12 compatibility
• 0.4 in thick
• Also names Karu 12 and Volt 12

Cons

• Material descriptions differ
• Wider than a 13 in stone

Outspark’s 13.2 in square stone is 0.4 in thick and names the Koda 12 and Fyra 12 among compatible ovens. It also names the Karu 12, Ooni 3 and Volt 12.

Its material descriptions differ: the product description calls it cordierite, while the specs call it ceramic. The stated size is 13.2 in square.

The footprint and thickness match the ROCKSHEAT option, so compare oven fit and material when choosing between them. Outspark says to let the stone cool, scrape off food and wash it with warm water.

Choose it for the stated multi-oven compatibility if you prefer its listed material description. Measure for the 13.2 in square size before ordering.

4

SafBbcue Cordierite Pizza Stone for Ooni Koda: Best for Koda 16 owners

9.1/10Our score

• 20.4 x 16.7 in
• 0.6 in thick
• T-shaped
• Described for Ooni Koda 16

This large T-shaped stone is described for the Ooni Koda 16. Its dimensions do not match the square 12-inch oven stones above.

See it on Amazon

Pros

• Sized for the Koda 16
• 0.6 in thick
• T-shaped replacement

Cons

• Not described for Koda 12 or Fyra 12
• Much larger than the 12-inch oven options

SafBbcue’s stone is a 20.4 x 16.7 in T-shaped part described for the Ooni Koda 16. At 0.6 in thick, its size and shape are for a larger oven than the Koda 12 or Fyra 12.

The title and bullets call its material cordierite, while the specs say stoneware. Confirm the exact item details if you’re considering it for a Koda 16.

For a Koda 12 or Fyra 12, this stone is not a suitable match based on its dimensions and stated oven compatibility. Use a square 12-inch option instead.

Choose it only if you need a Koda 16 replacement and have confirmed the shape and dimensions. It appears here to show why model and footprint matter, since Ooni replacement stones are not interchangeable by name alone.

5

Mimiuo 13" Square Pizza Stone Fits: Best for a 13-inch footprint

8.9/10Our score

• 13 x 13 in square
• 0.47 in thick
• Cordierite in bullets
• Compatible with Koda 12 and Fyra 12

Mimiuo describes a 13 x 13 in stone for Koda 12 and Fyra 12 ovens. Its bullets call the material cordierite, while its specs call it ceramic.

See it on Amazon

Pros

• 13 x 13 in footprint
• 0.47 in thick
• Names Koda 12 and Fyra 12 compatibility

Cons

• Material descriptions differ
• Check clearance for your oven

Mimiuo gives a 13 x 13 in square size and a 0.47 in thickness. Its bullets name the Koda 12 and Fyra 12, along with other 12-inch Ooni ovens.

Its bullets call the material cordierite, while its specs call it ceramic. The size is clear, but check the material description if you’re comparing it with other cordierite stones.

Mimiuo says to let the stone cool fully, scrape off residue and rinse it with warm water. Its care guidance says not to use oil or seasoning.

Choose it when a 13 in footprint and 0.47 in thickness fit your needs. It’s thinner than Unicook and thicker than the 0.4 in options.

6

Tmozyar 15.5" Pizza Stone for BGE M: Best for a Big Green Egg

8.4/10Our score

• 15.5 in round outer diameter
• 0.75 in thick
• Ceramic
• Described for Big Green Egg Medium

This round ceramic stone is described for a Big Green Egg Medium and other kamado grills. It is not a replacement for the square 12-inch Ooni oven stones.

See it on Amazon

Pros

• Stated fit for Big Green Egg Medium
• 0.75 in thick
• Round shape

Cons

• Not described for Ooni Koda 12 or Fyra 12
• 15.5 in diameter is much larger

Tmozyar’s 15.5 in round ceramic stone is described for the Big Green Egg Medium and other kamado grills. It is 0.75 in thick and has a three-leg design.

This is a heat deflector and baking surface for a different grill format, not a square replacement stone for the Koda 12 or Fyra 12. Tmozyar recommends measuring the original part before buying.

Choose it for the named Big Green Egg Medium use. Do not use it as an Ooni 12 replacement based on the stated dimensions and compatibility.

How do I check a replacement stone’s fit?

Measure the oven’s usable interior before you buy, then compare length, width and thickness with the replacement. For moving dough and baked pies, see aluminum pizza peel options.

Leave clearance around the edges so the stone does not interfere with airflow or the oven’s opening.

Compatibility names are useful, but they do not account for every oven’s condition or setup. If a stone is wider than the original, confirm the fit with the manufacturer or seller before ordering.

A stone is one part of the baking setup. For a comparison of stone and steel, read Which Is Better Pizza Stone or Pizza Steel?, then consider Is It Worth Buying Pizza Stone or Pizza Steel?.

Should you choose a 0.4 in, 0.47 in or 0.6 in stone?

Pick by the dimensions and thickness that fit your oven, since these options span 0.4 to 0.6 in. ROCKSHEAT and Outspark are 0.4 in thick, Mimiuo is 0.47 in, and Unicook is 0.6 in.

These measurements describe the stones, but do not tell you which will bake best in your oven. Follow your oven’s instructions for preheating and use, and match the replacement’s thickness to the space available.

Which Ooni replacement stone should you choose?

Choose Unicook if you want a 13 x 13 in cordierite stone with stated Koda 12 and Fyra 12 compatibility. Choose ROCKSHEAT or Outspark if a 0.4 in stone suits your oven and its 13.2 in footprint clears the sides.

Mimiuo is another 13 in square option at 0.47 in thick, though its material descriptions differ. Skip the larger Koda 16 and Big Green Egg parts for these 12-inch ovens, and check your oven’s dimensions before you buy.

Our top 3 picks at a glance

1. 1
   Best for a balanced 12-inch fit

   Unicook 13" x 13" Square Pizza Stone

   9.7/10 our score

   See it on Amazon
2. 2
   Best for a thinner replacement

   ROCKSHEAT 13.2" x 13.2" x 0.4" Square

   9.6/10 our score

   See it on Amazon
3. 3
   Best for a multi-oven option

   Outspark 13.2" Square Pizza Stone for Ooni

   9.4/10 our score

   See it on Amazon

Frequently asked questions

What size replacement stone fits an Ooni Koda 12?

The options here range from 13 x 13 in to 13.2 x 13.2 in, and several name Koda 12 compatibility. Measure the oven’s interior and compare it with the stone’s full dimensions before ordering.

Unicook recommends leaving 1 in of clearance on all sides.

Can I use a Koda 12 replacement stone in an Ooni Fyra 12?

Unicook, ROCKSHEAT, Outspark and Mimiuo name both Koda 12 and Fyra 12 compatibility. Check each stone’s dimensions against your oven because stated compatibility does not replace a clearance check.

Does replacement stone thickness matter?

The square options range from 0.4 to 0.6 in thick, with Mimiuo at 0.47 in. Compare thickness alongside length and width, then follow your oven’s instructions for using a replacement surface.

How should I clean a cordierite pizza stone?

Let the stone cool fully, then scrape away stuck food and follow its care directions. Unicook says to hand wash its cooled stone with warm water and not to season it with oil or grease.

Discoloration can develop with use and is normal for Unicook’s stone.