Main trade-off
Breville Smart Oven Air Fryer Pro
Its 21.4-inch-wide body needs a permanent stretch of counter.
Head-to-head
Breville Smart Oven Air Fryer Pro vs Ninja Flip: Breville fits taller oven jobs, Ninja flips away after use
The short answer
Choose the Breville Smart Oven Air Fryer Pro if it will take over substantial baking and roasting from your main oven. Choose Ninja Flip if your regular jobs are flatter foods and you want to reclaim counter space after cooking. Breville fits a 13-inch pizza and most 9-by-13-inch pans, while Ninja's 12-inch pizza capacity comes in a flip-up design.
Before you choose
The reasoning and the trade-offs
One extra inch adds about 17% of pizza area
A 13-inch circle has around 133 square inches of area versus 113 for 12 inches. The difference is about 20 square inches, not a claim about how many people dinner will feed.
What this is based on
Circle area is π × radius². The ratio 13² ÷ 12² is 1.174, so the increase is 17.4%. Assumes circular pizzas at the stated diameters.
Main trade-off
Ninja Flip Toaster Oven & Air Fryer
Its shallow cavity restricts tall foods.
Breville Smart Oven Air Fryer Pro
- Choose it for
- You want room for taller roasts and familiar baking pans.
- You plan to use the oven for a wider range of baking and slow-cooking jobs.
- Main trade-off
- Its 21.4-inch-wide body needs a permanent stretch of counter.
Ninja Flip Toaster Oven & Air Fryer
- Choose it for
- You mainly cook pizza, toast and other flatter meals.
- You want to flip the cooled oven upright between uses.
- Main trade-off
- Its shallow cavity restricts tall foods.
About this comparison
Compare Breville BOV900 Smart Oven Air Fryer Pro and Ninja Flip SP151 by baking-pan fit, pizza size and countertop storage. Choose the oven format that suits your meals.
Breville is the more flexible second oven. Ninja prioritizes flatter everyday meals and a counter that can be cleared after use.
Winner by situation
Start with what you need it to do
Use the appliance as a more complete second oven
Breville provides a taller oven cavity and a broader set of baking and roasting uses.
- Breville Smart Oven Air Fryer Pro
- Better fit
- Ninja Flip Toaster Oven & Air Fryer
- Good
Reclaim counter space after the oven cools
Ninja is designed to flip upright between uses.
- Breville Smart Oven Air Fryer Pro
- Caution
- Ninja Flip Toaster Oven & Air Fryer
- Better fit
Bake a 13-inch pizza
The Ninja's stated pizza diameter is 12 inches.
- Breville Smart Oven Air Fryer Pro
- Better fit
- Ninja Flip Toaster Oven & Air Fryer
- Not suitable
Cook mostly toast and 12-inch pizza
Both cover those jobs, making storage and other meals the deciding factors.
- Breville Smart Oven Air Fryer Pro
- Good
- Ninja Flip Toaster Oven & Air Fryer
- Good
What matters in practice
The differences that matter
One extra inch adds about 17% of pizza area
A 13-inch circle has around 133 square inches of area versus 113 for 12 inches. The difference is about 20 square inches, not a claim about how many people dinner will feed.
How we reached this conclusion
Circle area is π × radius². The ratio 13² ÷ 12² is 1.174, so the increase is 17.4%. Assumes circular pizzas at the stated diameters.
Ninja's storage benefit does not shrink the cooking space requirement
The oven must be in its operating position to cook. Flipping it afterward helps a shared counter, but does not remove the need for heat clearance during use.
How we reached this conclusion
The inference follows the manufacturer's flip-up storage design. No cross-model operating-footprint percentage is claimed.
A familiar pan can be a hard constraint
If your regular recipe relies on a 9-by-13-inch pan, Breville explicitly supports most pans in that size. The pan's actual outer dimensions still need checking.
How we reached this conclusion
Breville's exact BOV900 record lists most 9-by-13-inch pans. Pan labels may exclude handles and lips, so fit is not guaranteed for every dish.
Choice A
Breville, BOV900BSSUSC
Smart Oven Air Fryer Pro
A large countertop oven with six independent quartz elements, broad rack space and thirteen cooking functions.
- Best matched use
- Replacing a toaster oven with one roomy cooker
Checked facts
- One-cubic-foot official interior capacity
- Thirteen cooking functions
- Six independently controlled quartz heating elements
Choice B
Ninja, SP151
Flip Toaster Oven & Air Fryer
An eight-mode toaster oven that pivots upright after cooling to reclaim roughly half of its stored counter footprint.
- Best matched use
- Oven versatility with vertical storage
Checked facts
- Eight cooking modes
- Fits a 12-inch pizza
- Flips upright for storage
Meaningful differences
What changes the fit
| What changes | Breville Smart Oven Air Fryer Pro | Ninja Flip Toaster Oven & Air Fryer | Why it matters |
|---|---|---|---|
| Published pizza size | 13 inches | 12 inches | Breville allows a slightly larger circular pizza. |
| Baking-pan fit | Most9 ×13-inch pans | Check the shallow cavity against your dish | Breville is the firmer starting point for familiar larger bakeware. |
| Interior emphasis | One-cubic-foot oven cavity | Low-profile flip-up oven | The shape matters more than comparing incompatible capacity units. |
| Storage | Remains in its cooking position | Flips upright after cooling | Ninja can give counter space back between meals. |
| Modes | 13 including proofing and slow cooking | Eight cooking modes | Extra modes matter only if they replace work you would otherwise do elsewhere. |
| Included cooking equipment | Two oven racks, 13-inch pizza pan and roasting pan | Wire rack, sheet pan and air-fry basket | Compare the accessories needed for your regular meals. |
What you give up
Every choice has a cost
If you choose Breville Smart Oven Air Fryer Pro
- The racks and mesh basket take more cleanup than a removable drawer, and small batches do not feel as quick as they do in a compact fryer.
If you choose Ninja Flip Toaster Oven & Air Fryer
- The removable parts are not dishwasher-safe and drawer fryers generally crisp more evenly.
What matters in practice
How to make the call
Choose Breville for the dishes and cookware you want to put inside. Choose Ninja when the counter must serve other jobs after dinner.
Bring your cookware measurements into the decision
The Breville's published support for most 9-by-13-inch pans makes it relevant to cooks who already own familiar baking dishes. Handles and rims can make the outer dimensions larger than the named pan size. Measure the complete dish and its height, then leave the space around food required for airflow.
Storage savings happen after cooking
Ninja's flip-up design is valuable on a multipurpose counter, but the oven still needs operating room when it is hot and laid down for cooking. Think about where the cord runs, what sits behind it and whether you can comfortably flip it after cooling. Storage convenience should match the actual kitchen routine.
Choose the extra modes you will genuinely use
Breville includes dedicated options such as proofing and slow cooking alongside its oven and air-fry modes. Those can make it a useful second oven rather than just a snack machine. If your main oven already handles those jobs, Ninja's more focused format may be easier to justify and easier to place.
What this comparison cannot tell you
- Pizza-area calculations compare circular size only, not servings or cooking quality.
- The flip-up storage claim does not describe the required operating footprint.
What the facts say
What the comparison shows
Useful conclusions from the current air fryers comparison, followed by the checked facts used to reach them.
Compared set
Only 1 of 35 models checked match every need here: “I want to replace my small oven”, “I bake as well as air fry”, and “My counter space is tiny”.
1 matching model from 35 checkedSee the checked facts and calculation notes
Match countThe count uses the current product-to-need assignments for “I want to replace my small oven”, “I bake as well as air fry”, and “My counter space is tiny”. A need with no documented match does not count.
| Product | Needs matched | Checked facts | Source records |
|---|---|---|---|
| Breville Smart Oven Air Fryer Pro |
|
| |
| Ninja Flip Toaster Oven & Air Fryer |
|
|
Ready to choose?
Check the price. Read the owner reviews.
Open either model on Amazon to check the current price, customer reviews and delivery options.
Breville Smart Oven Air Fryer Pro
You want room for taller roasts and familiar baking pans.
See price & reviews on AmazonNinja Flip Toaster Oven & Air Fryer
You mainly cook pizza, toast and other flatter meals.
See price & reviews on AmazonLinks open in a new tab.