Choose the Ninja 5-in-1 if you’ll regularly use its grill, roast, bake, or dehydrate functions as well as air frying. Choose a standalone air fryer if air frying is the main job you need it to do. That’s a use-case distinction, not a proven performance ranking: the available evidence does not establish that the Ninja cooks faster or produces better food than a specific standalone model.
This comparison focuses on the UK-market Ninja 5-in-1 Grill & Air Fryer EG351UK. Product names and specifications can vary by region, so confirm the exact model and electrical compatibility before buying.
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What is the Ninja 5-in-1 EG351UK?
Ninja lists five functions for the UK EG351UK: Grill, Air Fry, Roast, Bake, and Dehydrate. Its cooking pot is 5.7 L, and the manufacturer describes it as making up to four portions. Those figures describe this model, not every appliance called a Ninja 5-in-1. See Ninja’s official EG351UK specifications.
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The box includes a cooking pot, grill plate, crisper plate, splatter guard, digital cooking probe, cleaning brush, and recipe guide. Its listed dimensions are 43 cm high × 28 cm wide × 35.5 cm long; it weighs 8.3 kg. Measure both the counter space it will occupy and the cupboard or shelf where you plan to store it.
#1 Best Overall
- 5-IN-1 INDOOR GRILL & AIR FRYER: The Ninja Foodi AG301 grills, air fries, roasts, bakes, and dehydrates — 5 versatile functions in one countertop appliance for real char-grilled flavor indoors, any day of the year.
- CYCLONIC GRILLING TECHNOLOGY: 500°F rapid cyclonic air delivers Surround Searing — circulating superhot air around every side of your food while the 500°F grill grate brands authentic char-grilled marks directly onto proteins and vegetables.
- OUTDOOR GRILLING POWER: Engineered with the BTU cooking power of a full-size outdoor grill, the AG301 replicates the high-heat sear and char-grilled flavor of a gas or charcoal grill — right from your countertop, year-round.
- COOK FROM FROZEN — CHAR-GRILLED IN UNDER 25 MINUTES: The AG301 takes frozen steaks, chicken breasts, burgers, and fish fillets straight from frozen to perfectly char-grilled in under 25 minutes — no thawing required.
- AIR FRY WITH UP TO 75% LESS FAT: The 4-qt crisper basket air fries wings, fries, and more with up to 75% less fat than traditional deep frying* — crispy results with little to no oil. *vs. hand-cut deep-fried French fries.
How do the Ninja and a standalone air fryer compare?
“Standalone air fryer” covers products with different capacities, designs, and feature sets. Ninja’s own catalog, for example, includes single-basket and dual-basket categories. The comparison below describes the decision, not a claim that every standalone model shares the same size or capabilities.
| Decision | Ninja 5-in-1 EG351UK | Standalone air fryer |
|---|---|---|
| Cooking jobs | Grill, Air Fry, Roast, Bake, and Dehydrate, according to Ninja’s product page. | Primarily suited to air frying; check the selected model for any additional functions. Ninja’s US air fryer catalog lists single- and dual-basket categories. |
| Capacity | 5.7 L pot; manufacturer says up to four portions. | Varies by model. Compare the exact model’s stated capacity and usable cooking area; manufacturers may define capacity differently. |
| Space and handling | 43 × 28 × 35.5 cm; 8.3 kg, per Ninja. | Varies by model. Check its dimensions, weight, and storage needs rather than assuming it is smaller. |
| Best fit | Households likely to use the grill, roast, bake, or dehydrate functions often enough to justify a multi-function appliance. | Households whose routine is mainly air frying, provided the chosen model matches their capacity and cooking needs. |
| Performance evidence | A hands-on review notes that it preheats on most functions. | No matched head-to-head test against a named standalone model is established by the available comparison. |
Which one makes more sense for your cooking routine?
Choose the Ninja if you’ll use its other functions
The extra modes are the central reason to choose the EG351UK. If grilling, roasting, baking, or dehydrating are recurring jobs in your kitchen, one appliance may serve more of your routine. If those modes are unlikely to leave the menu, their presence alone is not a compelling reason to choose it.
Rank #2
- THE ULTIMATE GLASS AIR FRYER SYSTEM — 3 SIZES, ONE POWERPOD: Everything you need for personal meals to family-sized feasts — includes the Crispi PowerPod plus 6-cup, 2.5-QT, and 4-QT TempWare glass containers, 3 crisper plates, and 3 leak-proof storage lids. One system that does it all.
- FULL-SIZED AIR FRYER POWER IN THE PALM OF YOUR HAND: The compact Crispi PowerPod packs the wattage of a full-sized air fryer into a portable, handheld design.* Cook crispy, golden results anywhere on your counter — no bulky appliance footprint required. *Based on wattage vs. Ninja AF100.
- COOK FOR ONE OR THE WHOLE FAMILY — THREE CONTAINER SIZES: The 6-cup container cooks a personal-sized meal in as little as 7 minutes. The 2.5-QT holds up to 1.5 lbs of French fries. The 4-QT fits a full 4-lb chicken with veggies. Right-size your cooking every time.
- NON-TOXIC BOROSILICATE GLASS — PFAS-FREE, PTFE-FREE, BPA-FREE: Cook directly in thermal shock-resistant borosilicate glass that goes straight from frozen to crispy in minutes — no nonstick coatings, no chemicals, no compromise. Watch your food cook through the transparent vessel for total peace of mind.
- 5-IN-1 FUNCTIONALITY: MAX CRISP, AIR FRY, BAKE, RECRISP & KEEP WARM: Five versatile cooking modes cover everything from crisping fresh-cooked meals to reviving leftovers as if they just came out of the oven — all in one glass air fryer system.
Choose a standalone model if air frying is the priority
A focused air-frying routine makes a standalone model a sensible place to start. Compare specific models on capacity, usable cooking area, basket layout, dimensions, and any functions you genuinely need. A dual-basket design may matter if you want to cook separate foods at the same time; confirm that capability on the model you are considering.
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There is no matched comparison here between the EG351UK and a named standalone air fryer, so the evidence does not support declaring a winner on speed or food quality. TechRadar’s hands-on review, published April 20, 2025, notes that the Ninja preheats on most functions. Include preheating when estimating total cooking time, and compare like with like: the same food, portion, and cooking method.
Rank #3
- AIR CRISP TECHNOLOGY: 400℉ superheated air surrounds food for hot, crispy results with little to no oil.
- 5-IN-1 MULTI-FUNCTION AIR FRYER: Features 5 customizable cooking functions—Air Fry, Air Roast, Bake, Reheat, and Dehydrate for maximum versatility. A powerful1750-watt air fryer that’s BPA-free and built for everyday use.
- LARGE CAPACITY: The 5-QT nonstick basket and crisper plate fit up to 4 lbs of French fries or 5 lbs of chicken wings.
- GUILT-FREE FRIED FOODS: Up to 75% less fat than traditional air frying methods. Tested against hand-cut, deep-fried French fries.
- FROZEN TO CRISPY: Cook frozen foods in just minutes for an extra-crispy finish.
Ninja’s product page also makes performance claims, but they are manufacturer claims rather than independent findings or direct comparisons with a standalone air fryer. For example, the page says “up to 50% less energy than an oven” based on testing and calculations using the recommended Air Fry cook time for sausages versus conventional ovens. The stated result is tied to that test context; it does not establish the energy use of the Ninja against another air fryer.
Quick Recap
Best Value
- SMART COOK SYSTEM: Achieve the perfect doneness from rare to well done at the touch of a button, with the Foodi Smart Thermometer monitoring your food's internal temperature for you.
- 5-IN-1 VERSATILITY: One appliance does it all—Grill, Air Crisp, Bake, Roast, and Dehydrate for endless meal possibilities indoors.
- 500°F CYCLONIC GRILLING TECHNOLOGY: Grill indoors year-round with 500°F Cyclonic Grilling Technology that delivers authentic char-grilled results.
- FROZEN TO CHAR-GRILLED IN 25 MINUTES: Go straight from freezer to perfectly char-grilled in just 25 minutes—no thawing necessary.
- 4-QT AIR FRY CRISPER: Enjoy crispy, guilt-free fried favorites using the 4-qt air fry crisper basket with little to no oil.
Rank #4
- ALL-IN-ONE SYSTEM: Includes the Ninja Crispi PowerPod, 6-Cup, 4-Quart & 2.5-Quart CleanCrisp TempWare Containers with lids.
Check these points before choosing
- Confirm the exact model number, regional version, and electrical compatibility.
- Measure the counter footprint and storage space, including room to use the appliance safely.
- Compare the capacity and usable cooking area of the exact models; don’t treat different manufacturers’ capacity figures as automatically equivalent.
- List the functions you will actually use. The Ninja’s additional modes matter most when they fit regular meals.
- Check the current regional price and warranty for each candidate before deciding; neither is established here as a fixed comparison.
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.
