The best space-saving toaster oven is the one that fits your counter with room to ventilate and open, while still holding the food you actually cook. Measure the available space first; then compare usable interior capacity, storage design and cooking modes. Among the models covered here, the Breville Mini Smart Oven is a candidate for a smaller footprint and taller chamber, while the Ninja Flip SP151 can store upright when unused. The Oster Compact Air Fryer Oven offers several modes, but its listed product page does not give outer dimensions.
How to tell whether a compact toaster oven will fit
“Compact” does not guarantee a comfortable or safe fit on your counter. Measure the space where the appliance will sit, including clearance for ventilation and enough room for its door to open. Check the height below cabinets as well as the width and depth of the counter.
- Measure the counter space available for the appliance: width, depth and height.
- Check the manufacturer’s manual or product listing for required ventilation clearance. Do not assume the appliance can sit flush against a wall or beneath a cabinet.
- Account for door operation: make sure the open door will not hit a wall, cabinet, sink or walkway.
- Compare the appliance’s exterior dimensions—not its advertised capacity—with the space and clearances you measured.
- Consider where the oven will go when it is not in use if you plan to move it or store it upright.
Tom’s Guide also recommends measuring the counter and checking overhead cabinets and ventilation space when choosing a toaster oven: Tom’s Guide’s toaster oven buying guide. Required clearances vary by model, so follow the instructions for the exact appliance.
Compare cooking space with the food you make
Exterior size and usable cooking capacity are different. Think about what you regularly prepare: toast, pizza, baked goods or a larger item. Check the stated capacity, interior height and rack positions against those foods. A wide cavity may accommodate a pizza while remaining too shallow for taller dishes; a taller chamber may be more useful for some baking tasks.
#1 Best Overall
- COMPACT & SPACE SAVING: Versatile compact design fits nicely in small spaces when counter space is limited.
- ADJUSTABLE TIMER: The 15 min timer is perfect for toasting and warming up food for a quick and easy snack or breakfast.
- ADJUSTABLE TEMPERATURE CONTROLS: Adjust your oven controls between 200F-450F degrees for toasting, warming or baking.
- 650 WATTS OF POWER: Built-in temperature thermostat maintains even cooking heat to keep food warm, bake or toast.
- ACCESSORIES INCLUDED - Includes a non-stick back pan and wire rack that easily slides in and out of the rack position to suit a variety of foods.
Capacity figures are manufacturer claims unless they come from an identified independent test. For example, Breville’s U.S. page says the Mini Smart Oven fits four slices and an 11-inch pizza, while a separate Breville-branded page says four slices or a 9-inch pizza. Those claims conflict, so verify the exact model and market on its current listing or manual before relying on the pizza size.
Small toaster ovens to compare
| Model | Fit and storage | Capacity and functions | Important qualification |
|---|---|---|---|
| Breville Mini Smart Oven BOV450 | A Breville-branded product page lists approximate exterior dimensions of 15.5 × 13 × 8.75 inches and recommends at least four inches of clearance behind and above the unit. | Breville’s U.S. product page lists 1,800 watts and eight functions: bagel, toast, bake, broil, pizza, roast, cookies and reheat. It says the oven fits four slices and an 11-inch pizza. RTINGS reports three rack positions and an 11-inch pizza fit. | Breville pages conflict on pizza size: one says 11 inches and another says 9 inches. Confirm the exact variant. RTINGS says the chamber is taller than the Ninja Flip SP151’s, but the Breville lacks an air-fry mode and convection fan. |
| Ninja Flip SP151 | RTINGS describes a flip-back design that lets the oven store upright when unused, freeing counter space. RTINGS also says the Breville has a smaller countertop footprint in its comparison. | RTINGS says the wide chamber fits an 11-inch frozen pizza or six slices of bread. | RTINGS reports limited vertical chamber space and slower toasting than the Breville. It also found air-frying performance below that of a good basket-style air fryer. |
| Oster Compact Air Fryer Oven, model 2210065 | Outer dimensions: not stated on the opened Oster product page. Verify dimensions and required clearances before deciding whether it fits a small counter. | Oster lists an 18-quart (17-liter) capacity, five modes—air fry, bake, broil, toast and warm—three rack levels and a 60-minute timed-cooking function. Included accessories are a baking pan, crumb tray, wire rack and air-fryer mesh rack. | Oster says the capacity fits a whole chicken or a 9-inch pizza; treat that as a manufacturer claim, not an independent capacity test. |
Sources: Breville’s U.S. BOV450 page; Breville-branded compact oven page; RTINGS’ small toaster oven comparison, updated September 10, 2026; and Oster’s model 2210065 page. Product specifications can differ by market or listing.
Rank #2
- ACCOMMODATES 9-INCH PIZZA OR 4 SLICES OF BREAD – Designed to maximize utility within a compact footprint, the curved interior fits a 9-inch pizza or 4 slices of bread. Place items evenly for best results when toasting, baking, or reheating.
- FOUR VERSATILE COOKING FUNCTIONS – Select from baking, broiling, toasting, or keeping food warm. Natural convection airflow circulates heat throughout the oven—preheat for 10 minutes to ensure consistent cooking and crisp results.
- PRECISION 30-MINUTE TIMER WITH STAY-ON OPTION – The 30-minute timer includes clearly marked toast settings and a stay-on function. Oven will not operate unless timer is set or stay-on is selected, ensuring controlled and safe operation.
- CONVENIENT REMOVABLE CRUMB TRAY – The slide-out crumb tray allows for quick, hygienic cleanup. To prevent spills and overheating, keep food and bakeware at least 1½ inches from the top heating elements and fully contained within the tray.
- COMPACT AND CONTEMPORARY DESIGN – Measuring 14.5" x 10.8" x 8.8", this sleek stainless steel toaster oven complements any kitchen. Outer surfaces become hot during use—always use oven mitts and allow space for proper ventilation.
Which model makes sense for your kitchen?
Choose the Breville if footprint and a taller chamber matter most
RTINGS describes the Mini Smart Oven as having a smaller countertop footprint and taller chamber than the Ninja Flip SP151 in its comparison. It also reports good baking and toasting results in its tests. Those are RTINGS’ comparative observations, not independent tests by this publisher. The Breville does not have a convection fan or air-fry function, and its two product pages disagree about pizza size.
Choose the Ninja if upright storage solves your counter problem
The Ninja’s flip-up storage design may suit a counter where the appliance can be moved upright between uses. RTINGS says its wide chamber fits an 11-inch frozen pizza or six slices of bread, but notes limited vertical space. The design is useful only if you have a safe place to store it and are willing to move it after cooking.
Rank #3
- 5-IN–1 MULTIFUNCTIONAL COOKING- Enjoy versatile cooking with Air Fry, Bake, Broil, Toast, and Keep Warm settings. Perfect for preparing a wide variety of meals from crispy fries to perfectly baked pizzas and golden toast.
- HEALTHY AIR FRYING TECHNOLOGY – Cook crispy, delicious meals with little to no oil using advanced air frying technology. Enjoy healthier alternatives to your favorite fried foods without compromising taste or texture.
- EVENTOAST TECHNOLOGY FOR PERFECT TOAST – Achieve evenly toasted bread, bagels, and more with BLACK+DECKER’s EvenToast technology, ensuring consistent results every time with no hot spots.
- COMPACT YET SPACIOUS INTERIOR – Fits up to a 9-inch pizza or 4 slices of bread, making it ideal for quick family meals, snacks, or small batch cooking while saving valuable counter space.
- USER-FRIENDLY CONTROLS & 7 ACCESSORIES – 30-minute timer with removable crumb/drip tray, bake pan, air fry mesh tray, and wire rack for easy cleanup. Use drip tray when cooking and keep food clear of heating element. See User Manual for proper use.
Consider the Oster if you will use its extra modes
Oster lists air frying, baking, broiling, toasting and warming on the 18-quart model, along with three rack levels and included cooking accessories. Those functions may reduce the need for separate appliances if they match your routine. Because the opened product page does not list exterior dimensions, it is not possible to establish from that page whether this oven suits a particularly small counter.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Match controls and features to your habits
More cooking modes are not automatically better in a space-saving appliance: they still take up counter space. Favor functions you expect to use, and check whether the control style suits the precision you need. Tom’s Guide distinguishes simple dial controls from more exact digital controls and recommends matching extra functions to actual needs. Its general guidance is not a model-specific comparison of the three ovens above.
Rank #4
- AIR FRY TECHNOLOGY: Enjoy deep-fried taste without the fat. High-intensity hot air circulates to crisp fries, chicken, and snacks with little to no oil.
- MAX SPACE DESIGN: 20% more air frying capacity* while keeping the same countertop footprint. Fits most 9” round pans, up to 4 slices of toast, or a 10” pizza.
- 5 VERSATILE COOKING FUNCTIONS: Prepare a variety of meals with Air Fry, Bake, Broil, Toast, and Warm settings for everyday cooking convenience.
- SIMPLE DIAL CONTROLS: Easy-to-use knobs adjust temperature, cooking time, and toast browning levels for quick, intuitive operation.
- ACCESSORIES INCLUDED: PFAS-free ceramic-coated baking pan (8x more durable), air fry basket, wire rack, and removable crumb tray for easy cooking and cleanup.
For a small kitchen, prioritize in this order: confirmed exterior fit and clearance, the foods and portions the oven can handle, storage practicality, then useful modes and controls. Check the current product page and manual for the exact model before buying, especially when listed dimensions or capacity claims differ.
Quick Recap
Best Value
- The Breville Mini Smart Countertop Oven and Toaster Oven with Element iQ System is for cooks interested in making pizza, delicious cookies and golden toast in their countertop oven; It's a mini oven, but this space-saving tool offers 8 cooking functions
- ELEMENT iQ SYSTEM: Using 5 independent quartz elements, smart algorithms steer small oven's power where and when it's needed, creating a tailored cooking environment for precise results; Fast 1800 Watt preheat gets meals on the kitchen table faster
- 8 COOKING FUNCTIONS: Versatile mini smart oven has 8 cooking functions to bring new meal options to your home and kitchen; Access Toast, Bagel, Bake, Broil, Pizza, Roast, Cookies, and Reheat; It's a toaster oven, pizza oven and more, all in one appliance
- SMALL CAPACITY: 11 x 10 x 4 inch interior capacity fits 4 toast slices, bagels, cookies, tuna melts, 6 cup muffin tray, and 11 inch pizzas; 3 rack positions, pull out crumb tray and auto shut off; Combo countertop oven and toaster fits into small kitchens
- LCD DISPLAY: LCD display allows for easy access to all of mini oven's built in smart functionality; Choose from 8 cooking functions to access a space-efficient roaster oven, broiler and more
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
