3 Best Ninja Air Fryers in the UK (2026)

AF400UK vs AF500UK vs AF140UK: which Ninja should you buy?

Ninja sells a lot of air fryers in the UK, but three models come up again and again when people are choosing one: the Foodi MAX Dual Zone AF400UK, the Foodi FlexDrawer AF500UK and the compact Air Fryer PRO AF140UK. On paper they look like small, medium and large. In practice, they are built around three different ways of cooking.

The AF400UK gives you two completely separate drawers. The AF500UK has one big drawer that you can split in two or use as a single cooking space. The AF140UK keeps it simple with one small drawer. Which one makes sense depends far more on what you cook, and how much worktop you have, than on which has the longest feature list.

Quick verdict

Best overall: Ninja Foodi MAX Dual Zone AF400UK. For most families, two independent 4.75-litre drawers are the most practical setup. Chicken goes in one drawer, chips in the other, each at its own temperature, and SYNC gets both ready at the same time. It is also about 8cm narrower than the FlexDrawer.

Best for big meals and larger families: Ninja Foodi FlexDrawer AF500UK. Take the divider out and the 10.4-litre drawer becomes one cooking space roughly 37cm wide, big enough for a leg of lamb with vegetables or a full traybake. It’s the widest of the three. At the time of writing it’s also cheaper than the AF400UK, which makes it very good value if you have the room.

Best for one or two people: Ninja Air Fryer PRO AF140UK. A 4.7-litre single drawer, four cooking functions and a footprint under 29cm wide. At around £80 it costs roughly a third of either dual-zone model, and for a smaller household it is often all the air fryer you need.

The three Ninja air fryers at a glance

Model	Best for	Capacity and layout	Width	Typical price
Ninja Foodi MAX Dual Zone AF400UK	Best overall	9.5L (2 × 4.75L drawers)	41.5cm	£230–£240
Ninja Foodi FlexDrawer AF500UK	Big meals and larger families	10.4L (1 drawer, removable divider)	49.6cm	£199–£210
Ninja Air Fryer PRO AF140UK	One or two people	4.7L (1 drawer)	28.5cm	Around £80

Prices were checked at Ninja’s UK store and major UK retailers on 18 September 2026. Ninja air fryers go on offer a lot, so check the current price before you buy.

How I chose and ranked these three

This is not a list of the three biggest Ninjas. Each model is here because it suits a different kind of household, and the ranking reflects how well each one fits the widest range of UK kitchens, not capacity or price alone.

Specifications come from Ninja UK’s product information and UK retailer listings. Owner feedback from verified UK retailer reviews is used to spot patterns in everyday use, like cleaning, noise and size, rather than as a stand-in for cooking tests. The editorial scores weigh capacity, flexibility, everyday usability, footprint and value for each model’s intended buyer.

1. Ninja Foodi MAX Dual Zone AF400UK: best overall

Score: 9.3/10

The AF400UK is Ninja’s best-known dual-drawer air fryer. Its 9.5-litre capacity is split between two 4.75-litre drawers, and each one works as an independent cooking zone with its own programme, temperature and timer. For most family kitchens, this is the Ninja I would start with.

Quick specs

Specification	Ninja AF400UK
Capacity	9.5 litres (2 × 4.75L drawers)
Cooking zones	2 independent zones
SYNC / MATCH	Yes / Yes
Cooking functions	6: Air Fry, Max Crisp, Roast, Bake, Reheat, Dehydrate
Temperature range	40–240°C
Rated power	2,470W
Dimensions (H × W × D)	32.5 × 41.5 × 27cm (as listed)
Weight	8.8kg
In the box	2 non-stick drawers, 2 crisper plates
Dishwasher-safe parts	Drawers and crisper plates
Cable length	0.89m (retailer listing)
Guarantee	2 years on registration with Ninja

What makes it different

Two separate drawers really earn their keep when you cook a whole meal rather than a single batch of chips. Chicken thighs can roast in one drawer while potatoes or vegetables cook at a different temperature in the other. SYNC works out the timings so both finish together, and MATCH copies one drawer’s settings to the other when you want a double batch of the same food.

Because the drawers are physically separate, you can pull one out to shake the chips halfway through without disturbing whatever’s in the other. It sounds like a small thing. In a busy kitchen it is not, and it’s something the AF500UK can’t do, because both of its zones share one drawer. The smaller drawers are also lighter to lift out and easier to fit in a sink or dishwasher.

Ninja says each drawer holds up to 1.4kg of fries or a 2kg chicken. The temperature goes from 40°C up to 240°C, with Max Crisp at the top end for frozen foods, and the six functions cover a lot more than chips.

What you can’t do is cook anything bigger than one basket. A large joint, a whole traybake or anything wide has to be cut down or cooked elsewhere. Owners generally report even cooking and easy day-to-day use, and the complaints that do come up are minor ones: the short power cable, and fiddly cleaning around the drawer edges.

Who it suits

Families of three to five who regularly cook a main and a side at the same time will get the most from it. It also suits couples who batch-cook or entertain, and you do not have to use both drawers every time. A quick lunch in one drawer works perfectly well.

Why you might choose another Ninja

If you often roast joints or cook one-tray meals, the AF500UK’s single large space is more useful. If you mainly cook for one or two, or your worktop is tight, the AF140UK is far more proportionate. The AF500UK also undercuts it on price right now, so the AF400UK has to win on layout and footprint rather than value. If you like the two-drawer idea but want to see other brands, our guide to the best dual air fryers compares the wider market.

Pros and cons

• Two fully independent drawers with their own settings
• Open one drawer without disturbing the other
• SYNC and MATCH make two-zone cooking simple
• 40–240°C range with Max Crisp and Bake
• About 8cm narrower than the AF500UK

• Neither drawer takes a large joint or full traybake
• Costs more than the larger AF500UK
• Big and heavy (8.8kg) for a small kitchen
• Short power cable limits where it can sit

2. Ninja Foodi FlexDrawer AF500UK: best for big meals and larger families

Score: 9.1/10

The AF500UK takes the dual-zone idea and removes its biggest limitation. It has a single 10.4-litre drawer with a removable divider. With the divider in, you get two independent cooking zones with SYNC, much like a dual-drawer model. Take it out and the whole drawer becomes one large MegaZone.

Quick specs

Specification	Ninja AF500UK
Capacity	10.4 litres (1 drawer)
Cooking zones	2 with the divider in, or 1 MegaZone
MegaZone cooking area	Approx. 37 × 21.5cm, 13.7cm deep (retailer listing)
SYNC / MATCH	SYNC
Cooking functions	7: Air Fry, Max Crisp, Roast, Bake, Reheat, Dehydrate, Prove
Temperature range	40–240°C
Rated power	2,470W
Dimensions (H × W × D)	32.7 × 49.6 × 31.6cm
Weight	9.4kg
In the box	1 non-stick drawer, 1 divider, 2 crisper plates
Dishwasher-safe parts	Drawer, divider and crisper plates
Cable length	0.88m (retailer listing)
Guarantee	2 years on registration with Ninja

What makes it different

The MegaZone is the reason to buy this model. Retailer listings put the cooking area at roughly 37cm wide by 21.5cm front to back, which is a very different shape from a pair of separate baskets. Ninja’s own examples include a 2kg leg of lamb with roast vegetables, a 2.3kg rolled pork shoulder with potatoes, and one-dish meals such as toad-in-the-hole. None of those would sit comfortably in an AF400UK drawer.

It also adds a seventh function, Prove, for rising bread dough at a low temperature. Otherwise you get the same Air Fry, Max Crisp, Roast, Bake, Reheat and Dehydrate modes and the same 40–240°C range as the AF400UK.

There are downsides, and they’re mostly practical. Because both zones share one drawer, pulling it out to shake chips on one side brings the other side out with it. The divider is not a watertight seal either. Owners report that thin sauces and meat juices can seep underneath, so think of it as keeping foods apart, not liquids. The drawer itself is big, too, which makes it heavier to carry to the sink and a squeeze in some dishwashers.

It’s also the widest of the three at 49.6cm, about 8cm more than the AF400UK. Owners are generally positive about the capacity and flexibility, with the size, noise and cleaning the big drawer mentioned most often as drawbacks.

Price is where it gets interesting. At the time of writing, the AF500UK sells for around £20 to £40 less than the AF400UK, despite the extra capacity and the extra function. That gap will not always be there, but while it is, it tips the value argument in the AF500UK’s favour if you have room for it.

Who it suits

Households of four or more, anyone who hosts regularly, and people who like cooking roast dinners, traybakes or large batches in one go. Home bakers who fancy proving dough in the air fryer also get a function the other two don’t have.

Why you might choose another Ninja

If most of your meals naturally split into a main and a side, the AF400UK’s two separate drawers are simpler to live with and take up less room. For one or two people, a 10.4-litre drawer is hard to justify on the worktop, however good the price. For more options at this size, see our round-up of the best large air fryers.

Pros and cons

• Largest capacity of the three at 10.4L
• Divider-free MegaZone fits joints and traybakes
• Switches between two zones and one large space
• Seven functions, including Prove
• Cheaper than the AF400UK right now
• Handy for cooking for guests

• Widest footprint here at 49.6cm
• One drawer, so both zones come out together
• Divider doesn’t stop liquids seeping across
• Large drawer is bulkier to wash and heavy at 9.4kg overall

3. Ninja Air Fryer PRO AF140UK: best for one or two people

Score: 8.8/10

The AF140UK earns its place because not every household needs two cooking zones or a 10-litre drawer. It is a compact single-drawer air fryer with a 4.7-litre capacity, four cooking functions and a footprint that fits far more easily into a smaller kitchen.

Quick specs

Specification	Ninja AF140UK
Capacity	4.7 litres (1 drawer)
Cooking area	Approx. 21 × 21cm, 10.5cm deep (retailer listing)
Cooking zones	1
SYNC / MATCH	Not applicable
Cooking functions	4: Air Fry, Roast, Reheat, Dehydrate
Temperature range	40–210°C
Rated power	1,750W (Ninja figure; some retailers list 2,000W)
Dimensions (H × W × D)	26.5 × 28.5 × 36cm
Weight	4.8kg
In the box	1 non-stick drawer, 1 crisper plate
Dishwasher-safe parts	Drawer and crisper plate
Cable length	0.78m (retailer listing)
Guarantee	2 years on registration with Ninja

What makes it different

It is 28.5cm wide and weighs 4.8kg, which makes it about 13cm narrower than the AF400UK and a little over half its weight. Ninja says the drawer fits a whole 1kg chicken or up to 500g of fries. For one or two people, that’s a realistic everyday amount, as long as you don’t pile it too high. Chips spread in a single layer crisp much better than a heaped basket in any air fryer, and that matters more in a small drawer.

You do give some things up. There’s Air Fry, Roast, Reheat and Dehydrate, but no Bake, Max Crisp or Prove programme, and the maximum temperature is 210°C rather than 240°C. There is no second zone either, so a main and a side have to share the drawer or take turns. For chips, frozen snacks, chicken, vegetables and leftovers, most people won’t miss much.

Ninja’s own product information lists it at 1,750W, although some retailer listings show 2,000W. I have used Ninja’s figure throughout this guide. Owners tend to praise how easy it is to use and clean and how well it suits a small kitchen. The gripes are small ones: some noise, and no printed recipe book in the box.

Who it suits, and who should look elsewhere

Singles, couples, students and anyone short on worktop space. It also works as a second air fryer in a house that already has a larger model but does not want to fire it up for a snack or a quick lunch. If your budget is under £100 and you’re open to other brands, our guide to the best air fryers under £100 is a good next stop.

Families are a different matter. Cooking complete meals for three or four in a 4.7-litre drawer means batches, which cancels out much of the convenience. Even for two people, the AF400UK makes more sense if you often want two things on the go at different temperatures, such as salmon and potatoes.

Pros and cons

• Compact 28.5cm-wide footprint
• Well-sized for one or two people
• Simple four-function controls
• By far the lowest price of the three

• Only one cooking zone
• No Bake, Max Crisp or Prove programme
• Tops out at 210°C
• Too small for most family meals
• Shortest cable of the three at 0.78m

AF400UK vs AF500UK vs AF140UK: key differences

Feature	AF400UK	AF500UK	AF140UK
Capacity	9.5L	10.4L	4.7L
Drawers	2 separate	1 with removable divider	1
Cooking zones	2	2, or 1 MegaZone	1
SYNC / MATCH	Both	SYNC	No
Functions	6	7 (adds Prove)	4
Temperature	40–240°C	40–240°C	40–210°C
Rated power	2,470W	2,470W	1,750W
Width	41.5cm	49.6cm	28.5cm
Size (H × W × D)	32.5 × 41.5 × 27cm	32.7 × 49.6 × 31.6cm	26.5 × 28.5 × 36cm
Weight	8.8kg	9.4kg	4.8kg
Largest single cooking space	One 4.75L drawer	Full 10.4L drawer (approx. 37 × 21.5cm)	4.7L drawer (approx. 21 × 21cm)
Ninja’s household guide	8+ people	8+ people	1–2 people
Dishwasher-safe	Drawers, crisper plates	Drawer, divider, crisper plates	Drawer, crisper plate
Guarantee	2 years on registration	2 years on registration	2 years on registration
Typical price (Sept 2026)	£230–£240	£199–£210	Around £80

Is the larger AF500UK worth choosing over the AF400UK?

The extra 0.9 litres is not the real difference. What you’re choosing between is two separate baskets or one wide drawer that can be split. If your typical dinner is a main plus a side, like chicken and chips or fish and vegetables, the AF400UK handles it more neatly: either drawer can be opened on its own, and each one is easier to clean. If you regularly cook things that need width, such as a joint with vegetables around it, a whole traybake or a big batch of wings in a single layer, the AF500UK’s MegaZone does something the AF400UK simply can’t.

Worktop space usually settles it. The AF500UK is 49.6cm wide against the AF400UK’s 41.5cm, and both need clear space around them. If you have the room and cook for four or more, the AF500UK’s lower price makes it hard to argue against. If you don’t, the AF400UK is the more practical buy.

Is a dual-zone Ninja worth it over the AF140UK?

For a family, yes. With a single 4.7-litre drawer, chicken and chips for four usually means two rounds of cooking, and the first batch sits waiting while the second one cooks. The dual-zone models do both at once and finish them together.

For one or two people it’s less clear-cut. The AF400UK costs around £150 more, weighs almost twice as much and takes up 13cm more width. That’s worth it if you often want a main and a side cooking at different temperatures. If you mostly cook one thing at a time, or use the air fryer alongside the hob, the AF140UK does the job for much less.

AF500UK vs AF140UK

These two are aimed at completely different households, so it is rarely a close call. The AF500UK is for big meals and bigger families, and the AF140UK is for small households and small kitchens. If you really are torn between them, the AF400UK is probably the middle ground you’re looking for.

Which Ninja air fryer is right for you?

If this sounds like you	Choose	Why	Main compromise
Family meals with a main and a side most nights	AF400UK	Two independent drawers with SYNC and MATCH	Can’t fit large joints or traybakes
Roasts, traybakes or cooking for four or more in one go	AF500UK	10.4L MegaZone plus a removable divider	Needs the most worktop width
Cooking for one or two, or a small kitchen	AF140UK	Compact 4.7L drawer at a much lower price	One zone and fewer functions
Want the most capacity for your money	AF500UK	Cheaper than the AF400UK as of September 2026	Size, and prices can change

Running costs: how much do these Ninja air fryers cost to use?

Running costs are worth knowing, but they should not decide this comparison on their own. From 1 October 2026, Ofgem’s energy price cap puts the average electricity unit rate at 26.32p per kWh for Direct Debit customers on a standard variable tariff in England, Scotland and Wales. Your own rate may be different, especially if you are on a fixed deal.

The figures below assume 30 minutes at full rated power. In real use, an air fryer’s heating element cycles on and off to hold the temperature, so actual consumption is usually lower. Treat these as upper-end figures, not predictions.

Model	Rated power	30 min at full power	What matters in practice
AF400UK	2,470W	About 32.5p	Two foods cook at once, which can save a second cooking cycle
AF500UK	2,470W	About 32.5p	More food per cycle when cooking big meals
AF140UK	1,750W	About 23p	Lowest rated power, as long as one batch is enough

So the AF140UK isn’t automatically the cheapest to run for every household. If its drawer holds your usual meal in one go, it will use less electricity. If a family needs two or three rounds to cook what a bigger model handles at once, that advantage shrinks or disappears. How much food you normally cook matters more than the wattage printed on the box. If you are weighing up an air fryer against your main oven, our air fryer vs oven guide goes through the numbers in more detail.

What to look for when buying a Ninja air fryer

Capacity before features

Think about an ordinary weekday dinner, not the biggest meal you cook twice a year. Go too large and you give up worktop space for capacity you rarely use. Go too small and you end up cooking in batches.

Do you need Max Crisp, Bake or Prove?

Probably not if your routine is mostly chips, vegetables, chicken, leftovers and quick lunches. The AF140UK’s four programmes cover those basics. Max Crisp is useful if you cook a lot of frozen food at high heat, while Bake and Prove matter more if you plan to make cakes or bread. If baking is a big part of the appeal, our guide to the best air fryers for baking is worth a look.

Measure the space, not just the capacity

Check the width first, because that is where these three differ most: 28.5cm, 41.5cm and 49.6cm. Then allow room for the drawer to pull out at the front, plus the clearance Ninja advises, which is at least 15cm above and around the unit. For more on placement and safe use, see our guide: are air fryers safe?

Look at where your nearest socket is, too. Retailer listings give cable lengths of under 90cm for all three, so plan for the air fryer to sit close to a socket rather than on an extension lead shared with other appliances.

Think about cleaning

Ninja lists the drawers and crisper plates as dishwasher-safe on all three models. The difference is size. The AF400UK’s two smaller drawers and the AF140UK’s single drawer are easy to handle, while the AF500UK’s full-width drawer is bulkier, so check it fits your sink or dishwasher.

Frequently asked questions

Which Ninja air fryer is best overall in the UK?

Of these three, the AF400UK suits the widest range of households. Two independent 4.75-litre drawers with SYNC and MATCH handle everyday family meals well, and it is narrower than the AF500UK.

Is the AF500UK better than the AF400UK?

It is better for a specific buyer: someone who will use the 10.4-litre MegaZone for joints, traybakes or big batches and has the worktop width for it. The AF400UK is the simpler choice if you would rather have two separate drawers. The AF500UK is also slightly cheaper, though that gap moves around with sales.

Is the AF140UK big enough for two people?

For most couples, yes. Ninja positions it for one or two people and says the drawer fits a 1kg chicken or up to 500g of fries. It is less convenient if you often want a main and a side cooking at different temperatures at the same time.

Which Ninja air fryer is best for a family?

The AF400UK, for most families who cook a main and a side most nights. Larger families, or those who roast joints and make traybakes, may get more from the AF500UK.

Can you cook a whole chicken in these Ninja air fryers?

Yes, within limits. Ninja says each AF400UK drawer fits a 2kg chicken and the AF140UK fits a 1kg chicken. The AF500UK’s MegaZone is designed for larger items, such as a 2kg leg of lamb with vegetables. For more on this, see our guide to the best air fryers for meat and chicken.

Are the removable parts dishwasher-safe?

Ninja lists the drawers and crisper plates as dishwasher-safe on all three models, plus the divider on the AF500UK. Hand-washing is gentler on non-stick coatings over time, and the AF500UK’s large drawer may not fit smaller dishwashers.

Do these Ninja air fryers come with a guarantee?

Yes. All three come with a two-year guarantee when you register the product with Ninja (UK and ROI only). Check the current terms when you buy.

Does a higher wattage mean higher running costs?

Not necessarily. Wattage is the maximum draw, not what a meal actually uses. Cooking time, how often the element cycles, how much food you cook and how many batches you need all affect the final cost.

Final verdict: which Ninja air fryer should you buy?

For most UK families, the Ninja Foodi MAX Dual Zone AF400UK is the best place to start. It has enough capacity for proper family meals, and its two independent drawers solve a real everyday problem when different foods need different temperatures and cooking times.

Choose the AF500UK if you know you’ll use the FlexDrawer. Switching from two zones to one 10.4-litre MegaZone is very useful for joints, traybakes and big batches, and it’s the cheaper of the two big models as I write this. Just make sure you have the worktop width for it.

The AF140UK is the sensible choice for one or two people. It gives up the second zone and a few programmes, but you are not paying for, or finding room for, capacity you’re unlikely to use.

If you’re still unsure, go back to what you cooked for dinner last night and the night before. If it was usually a main and a side, get the AF400UK. If it was a roast or a traybake, the AF500UK. If it was a meal for one or two, the AF140UK will do the job.

How this guide was researched

Specifications, capacities and guarantee details come from Ninja UK’s product information and UK retailer listings, checked in September 2026. Owner feedback patterns are drawn from verified UK retailer reviews. Capacity and performance claims are Ninja’s own and are attributed as such, not presented as first-hand test results. Prices, availability and energy tariffs change, so check current figures before you buy.