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Verdict: The Ninja Flip SP151 is worth considering if you need one countertop appliance for toast, pizza, baking, reheating and occasional air frying, especially when counter space is tight. Its hinged body flips up against the backsplash for storage, and independent 2025 testing found excellent temperature uniformity, strong toasting and good baking performance. It is less convincing as a dedicated air fryer: some food was undercooked, the chamber is only about 3.3 inches high, and the preheat alert can appear before the oven has fully reached the selected temperature.
Ninja advertises eight cooking functions, a 12-inch pizza capacity and up to four pounds of air-fry food. In testing, the usable pizza size was closer to 11 inches. The SP151 is best understood as a low-profile convection toaster oven with a useful air-fry mode, not as a replacement for a large oven or a drawer-style air fryer.
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1Clear out junk files and repair common Windows errors2Scan for outdated or missing drivers - takes under a minute3Repair Windows errors before they cause bigger problemsWhat is the Ninja Flip SP151, and who is it for?
The SP151 combines a convection oven, air fryer and toaster in a single countertop unit. Its eight modes are air fry, roast, broil, bake, pizza, toast, bagel and dehydrate. The defining feature is a hinged design that lets the oven flip upward and sit against the backsplash when you need to reclaim counter space. Ninja describes it as an appliance that “crisps and flips up and away.”
This layout suits apartment kitchens, dorm-style kitchens, offices and any counter where a conventional toaster oven would permanently occupy a large rectangle. It also works for households that want fast toast and reheating without turning on a full-size oven. The trade-off is internal height: the same low-profile shape that saves space makes tall foods difficult or impossible.
#1 Best Overall
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- 12-Month Warranty: Backed by a 12-month manufacturer warranty for peace of mind. Designed to meet strict quality control standards for reliable everyday performance.
- Good fit: toast, bagels, frozen snacks, 9- to 11-inch pizzas, sheet-pan meals, vegetables, reheating and small baked goods.
- Less suitable: whole chickens, tall casseroles, high-rising loaves, large roasts and air-frying batches that need generous airflow.
- Best reason to buy: you want several oven functions and a storage position that clears the worktop.
- Main reason to skip: your priority is the most even air-fryer browning or the largest cooking cavity.
How does the flip-up design affect counter space?
The oven operates horizontally like a normal toaster oven, then pivots upward for storage. When planning a location, leave enough room to open the door, load the rack and allow heat to escape during cooking; the flipped position is for storage, not operation.
Dimensions vary depending on whether a measurement describes the appliance standing for use, the flipped storage position or a particular point on the hinge. Ninja lists product dimensions of 19.13 × 10.2 × 18.43 inches. RTINGS measured 16.9 × 15.9 × 7.7 inches on the tested unit. Those figures are not directly interchangeable, so use the manufacturer’s diagram for your exact cabinet and backsplash, and use the independent footprint as a reality check before buying.
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Measure the counter depth, the distance to the backsplash and the clearance above the counter. Also check that the cord can reach an outlet without running across a hot surface. The 32-inch cord gives reasonable flexibility, but the oven is rated for a 120-volt circuit and should be plugged directly into a suitable wall outlet rather than an overloaded extension strip.
What can the SP151 cook?
Each mode changes the heating pattern and default behavior. The table below translates the eight labels into practical uses.
| Function | Best uses | Important limitation |
|---|---|---|
| Air fry | Frozen fries, wings, vegetables and other foods that benefit from circulating hot air | Some food may remain undercooked; the shallow cavity limits vertical space |
| Roast | Vegetables, meat portions and sheet-pan dinners | Tall roasts and whole poultry may not fit |
| Broil | Rapid surface browning and melting cheese | Food sits close to the upper element, so watch it continuously |
| Bake | Small cakes, biscuits, casseroles and reheating that needs an enclosed oven | Pan height must stay within roughly 3.3 inches of usable clearance |
| Pizza | Frozen or fresh pizzas sized for the cavity | RTINGS fit an 11-inch pizza; the advertised 12-inch capacity may depend on pizza shape and clearance |
| Toast | Standard sliced bread | Toast timing varies with bread thickness and starting temperature |
| Bagel | Cut bagels with the sliced side facing the upper element | Use the orientation shown in the manual to avoid over-browning one surface |
| Dehydrate | Low-temperature fruit, herbs and similar foods | The cavity and included accessories limit how much can be dehydrated at once |
How well does the Ninja Flip SP151 cook?
RTINGS gave the SP151 an 8.0/10 for mixed use, 7.5/10 for air frying, 8.0/10 for toasting and 7.2/10 for cooking capacity. The test found excellent temperature uniformity and generally good stability, with some temperature fluctuation and occasional undercooking in air-fry tests.
| Measured result | What it means |
|---|---|
| 8.0/10 mixed use (RTINGS, 2025) | Strong overall performance across its combined functions |
| 7.5/10 air frying (RTINGS, 2025) | Useful crisping, but not consistently as even as the best dedicated drawer-style air fryers |
| 8.0/10 toasting (RTINGS, 2025) | One of the appliance’s strongest jobs |
| 7.2/10 cooking capacity (RTINGS, 2025) | Functional for a compact oven, constrained by height and pan area |
| 85–450°F tested range | Broad enough for low-temperature dehydration through high-heat roasting and broiling |
| 1:45 to reach 350°F | Fast preheating in the RTINGS test |
| 4:32 for six slices of golden-brown toast | Useful benchmark for a full six-slice batch under the test conditions |
| 1,720 W maximum measured draw | Close to, but below, Ninja’s 1,800 W rated power |
The high temperature uniformity is valuable for baking and reheating because food is less likely to have a hot corner and a cold corner. However, uniform air temperature does not guarantee even browning: airflow, food spacing and the shape of the basket still matter. For frozen foods, shake or turn the basket partway through and verify the center is hot before serving.
Rank #2
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- What You Get: Anker USB-C Hub (5-in-1, 4K HDMI), welcome guide, 18-month warranty, and our friendly customer service.
Does the Ninja Flip fit a 12-inch pizza?
Ninja advertises a 12-inch pizza capacity, while RTINGS reported that an 11-inch pizza fit in its tested chamber. Treat 11 inches as the conservative planning number unless you have confirmed the exact diameter of your pan or pizza with the current product diagram.
Pizza size is not the only constraint. A thick crust, raised edge or pan lip can reduce the usable diameter, and the oven’s approximately 3.3 inches of vertical clearance can interfere with deep-dish styles. For a fresh pizza, check that the peel or pan can enter without catching on the door and that the top of the crust will remain safely below the upper element.
How much food can you air fry in the SP151?
Ninja advertises up to four pounds of air-fry food. That is a maximum marketing capacity, not a guarantee that four pounds will brown evenly in one layer. Crowding blocks airflow and increases the chance that the center of the pile will stay soft or undercooked.
For the most even results
- Preheat using the air-fry setting and allow the cycle to complete, even if the reminder appears early.
- Spread food in a single layer when possible, leaving visible gaps around pieces.
- Use the supplied air-fry basket rather than a solid pan when airflow underneath matters.
- Turn or shake food halfway through. Rotate the basket if one side colors faster.
- Check the thickest piece with a thermometer or cut it open before serving; do not rely on browning alone.
- Cook a second batch instead of piling food above the basket rim.
RTINGS found occasional undercooking during air frying and noted that dedicated drawer-style air fryers can brown more evenly. If air frying is your primary use and you routinely cook large batches, a purpose-built air fryer may be a better tool. If air frying is one task among many, the SP151’s combination of modes and compact storage is more compelling.
How do I use the SP151 for reliable toast, baking and reheating?
Toast was one of the SP151’s strongest tested functions, and the convection cavity also performed well for baking and reheating. The following workflow reduces the most common mistakes.
- Position the oven: Flip it down into its operating position, place it on a stable heat-resistant counter and keep the ventilation area clear.
- Select the mode: Choose toast, bagel, bake, roast, broil, pizza, air fry or dehydrate according to the food. Set the temperature and time shown in the recipe or package instructions.
- Preheat deliberately: Wait for the cycle to finish, but remember that the readiness reminder may occur before the cavity has fully reached the selected temperature.
- Load the correct accessory: Use the wire rack for toast and rack-supported baking, the sheet pan for contained foods and the air-fry basket for circulating-air cooking. Keep the crumb tray installed.
- Check early: Compact ovens can finish faster than a full-size oven. Start checking several minutes before a recipe’s conventional-oven time, especially for toast, broiling and thin foods.
- Rotate when needed: If a pan or tray browns unevenly, rotate it carefully midway through the cycle while keeping hands away from hot elements.
- Verify doneness: Use visual checks plus a food thermometer where safety depends on internal temperature.
- Cool before flipping: Do not move the oven into its storage position while it is hot or while accessories are inside.
For toast, select the slice count and shade that best match your bread, then adjust the next batch rather than repeatedly opening the door. For bagels, place the cut side toward the intended browning element. For baking, use low-sided cookware that fits under the 3.3-inch clearance and avoid recipes designed for tall Dutch ovens or high-rising loaves.
Rank #3
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What are the SP151’s clearance and capacity limits?
The low chamber is the central compromise. RTINGS measured about 3.3 inches of usable interior height and rated cooking capacity 7.2/10. That is enough for ordinary toast, a shallow casserole, cookies, vegetables and modest meat portions, but not for every dish that fits in a full-size oven.
- Measure the assembled pan, including handles and a lid, not just the cooking surface.
- Leave space above food for expansion and airflow; a pan that technically fits can still touch the upper element when contents rise.
- Expect whole chickens, tall roasts and large loaves to be impractical.
- For pizza, confirm both diameter and thickness rather than relying only on the advertised 12-inch figure.
- Use a second batch when a large quantity would force food into multiple layers.
What is included, and which accessories fit?
The box includes an air-fry basket, sheet pan, wire rack and removable crumb tray. These parts cover the main cooking modes without requiring an immediate accessory purchase.
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Because the official page says the unit is not dishwasher safe, plan to hand-wash removable parts according to the care instructions. Avoid abrasive pads that can damage finishes, and remove grease and crumbs before the next high-heat cycle.
How should I clean and maintain the SP151?
Unplug the cooled oven before cleaning. Remove the crumb tray and accessories, brush away loose debris, then wash removable parts by hand with mild detergent unless the current manual specifies a different method. Wipe the interior and exterior with a damp, non-abrasive cloth; never immerse the main appliance, pour liquid into the cavity or spray cleaner directly onto heating elements.
Empty the crumb tray frequently. Grease and crumbs can smoke during broiling or air frying and may create a fire hazard if allowed to accumulate. Let all parts dry completely before reinstalling them. Inspect the cord, door and hinge periodically; stop using the oven if the cord is damaged, the door will not close or the hinge no longer supports the storage position securely.
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What are the SP151’s electrical requirements and warranty?
Ninja lists a 1,800-watt rating, 120-volt operation, stainless-steel construction and a 32-inch power cord. RTINGS measured a maximum draw of 1,720 watts in testing. On a busy kitchen circuit, that load can trip a breaker if used alongside another high-wattage appliance such as a kettle or microwave.
Ninja lists a one-year limited warranty. Keep the receipt, model number and serial information, and check the warranty terms for your region before purchase. Return windows, availability and prices vary by retailer and change over time, so confirm those details at the point of sale rather than relying on an old listing.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What should I compare before choosing the SP151?
The most useful comparison is not a single feature score. Match the oven to your counter, food and cleaning habits using the criteria below.
| Decision point | What the SP151 offers | Question to ask about another model |
|---|---|---|
| Stored footprint | Flip-up storage intended to clear the counter | Can it store safely against your backsplash, and how much room is needed to open it? |
| Operating footprint | Compact countertop oven, with dimensions reported differently by orientation | Are published dimensions measured with the door open, closed or flipped? |
| Vertical clearance | About 3.3 inches in RTINGS’ test | Will your tallest pan, bread or roast fit without touching an element? |
| Air-fry consistency | 7.5/10 in RTINGS’ 2025 testing; occasional undercooking | Does the basket leave room for a single layer, and can you shake it easily? |
| Toast performance | 8.0/10; six slices reached golden brown in 4:32 in the test | How many slices fit, and is browning even at your preferred shade? |
| Pizza and pan size | Ninja advertises 12 inches; RTINGS fit 11 inches | What is the verified interior diameter and height? |
| Parts | Rack, sheet pan, air-fry basket and crumb tray included | Are replacement parts sold separately and identified by model number? |
| Warranty and returns | One-year limited warranty listed by Ninja | What are the local warranty, return deadline and restocking terms? |
What problems might I encounter, and how can I fix them?
The food is browned outside but undercooked inside
Reduce the load, leave gaps between pieces, shake or turn halfway through and extend cooking time in short increments. Verify the center temperature; surface color is not a reliable doneness test. If the same recipe repeatedly fails in a crowded basket, split it into two batches.
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The preheat alert appears too soon
The reminder can signal readiness before the cavity has fully reached the set temperature. Allow additional preheating time for recipes that depend on accurate oven temperature, and avoid opening the door repeatedly during that period.
A tall dish does not fit
Measure the dish including handles, a lid and the expected rise of the food. Substitute a shallow pan or use a full-size oven for tall roasts, whole poultry and high-rising bread.
Best Value
- 5-in-1 Connectivity: Equipped with a 4K HDMI port, a 5 Gbps USB-C data port, two 5 Gbps USB-A ports, and a USB C 100W PD-IN port. Note: The USB C 100W PD-IN port supports only charging and does not support data transfer devices such as headphones or speakers.
- Powerful Pass-Through Charging: Supports up to 85W pass-through charging so you can power up your laptop while you use the hub. Note: Pass-through charging requires a charger (not included). Note: To achieve full power for iPad, we recommend using a 45W wall charger.
- Transfer Files in Seconds: Move files to and from your laptop at speeds of up to 5 Gbps via the USB-C and USB-A data ports. Note: The USB C 5Gbps Data port does not support video output.
- HD Display: Connect to the HDMI port to stream or mirror content to an external monitor in resolutions of up to 4K@30Hz. Note: The USB-C ports do not support video output.
- What You Get: Anker 332 USB-C Hub (5-in-1), welcome guide, our worry-free 18-month warranty, and friendly customer service.
The oven smokes
Stop the cycle if smoke is heavy, unplug after it is safe and let the unit cool. Clean the crumb tray and remove accumulated grease; check that packaging, foil or food is not touching an element. Persistent smoke after cleaning warrants contacting the manufacturer rather than continuing to operate the appliance.
The appliance trips a breaker
Use a suitable 120-volt wall outlet and avoid sharing the circuit with another high-power appliance. If the breaker trips repeatedly with the SP151 alone, discontinue use and have the outlet or appliance checked by a qualified professional.
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Buy it when counter space, toast and multi-function cooking matter more than maximum air-fry performance or tall-dish capacity. The flip-up storage concept is genuinely useful, the tested temperature uniformity is strong, and the appliance handles everyday toast, reheating, baking and pizza well.
Choose a different format if you mainly want large air-fry batches, consistently aggressive browning or room for whole poultry and tall baking dishes. The SP151’s advertised four-pound air-fry capacity and 12-inch pizza claim should be treated as upper limits; independent testing found occasional undercooking, an 11-inch pizza fit and only about 3.3 inches of usable height. For the right kitchen, those compromises are acceptable in exchange for one appliance that can disappear against the backsplash when the cooking is done.
Frequently Asked Questions
Can the SP151 be stored flipped up immediately after cooking?
No. Let the oven and accessories cool completely, remove food and trays, and then move it to the storage position. Flipping a hot appliance can expose nearby surfaces to heat and can spill grease or crumbs.
Can I use parchment paper or aluminum foil in the Ninja Flip?
Only use them when the current Ninja instructions allow it, and keep any liner secured under food so it cannot reach a heating element. Never cover the crumb tray or block airflow through the air-fry basket.
Why does my pizza take longer than the package says?
Package directions are usually written for a particular full-size oven and rack position. Frozen pizza thickness, starting temperature, pan use and the SP151’s smaller cavity all change timing, so check the center and add time in short increments.
Does the SP151 replace a microwave?
It can reheat many foods with better browning than a microwave, but it is slower for soups, beverages and foods that benefit from steam. Treat it as a small convection oven rather than a universal microwave substitute.
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