What size air fryer do you need?
Answer two questions about your household and cooking style to get a recommended capacity in quarts and liters — plus a link to see options that size.
Based on roughly 4.2 qt of raw capacity for your household and cooking style, rounded up to the nearest common retail size. Larger baskets cook more evenly when not overcrowded, so it's usually better to round up than down.
Why basket size matters more than people expect
An air fryer cooks by circulating hot air around food, which only works properly when air can actually flow between pieces. An undersized basket forces food into a dense layer that steams instead of crisping, and often means splitting a meal into multiple batches — losing much of the time advantage air frying is supposed to offer. Sizing to household size and typical portion habits, rather than just picking the cheapest or smallest option, is what actually determines whether an air fryer gets used daily or ends up in a cupboard.
Top 5 Air Fryers
Picked from independent lab reviews, not sponsored placement — covers a range of budgets and household sizes.
Cosori TurboBlaze
6 qt
Consistently ranks at the top of independent lab tests for crisping performance, with a dehydrate setting most single-basket models skip.
Ninja Air Fryer (4-qt)
4 qt
Compact single-basket model with strong temperature accuracy — a good fit for a couple or small kitchen without sacrificing crisp results.
Ninja Foodi 8-Quart 2-Basket
8 qt (2 baskets)
Two independent baskets let you cook two foods at two different temperatures at once and finish together — the biggest advantage for a household cooking full meals.
Instant Pot Vortex Plus
6 qt
Adds roast, bake, broil, and dehydrate modes on top of air frying, from the brand best known for kitchen reliability.
Chefman Compact (2-qt)
2 qt
The cheapest way to try air frying without committing counter space — a solid choice for one person or a dorm-style kitchen.
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Common questions
Using a Ninja? See the full Ninja air fryer settings guide →
What size air fryer do I need for a family of 4?
For typical portions, a family of 4 usually needs a 5-6 quart air fryer. If you cook large portions, batch-cook, or meal-prep regularly, sizing up to 6-8 quarts avoids overcrowding the basket, which is the main cause of uneven, soggy results.
Is it better to size up or down if I'm between two sizes?
Size up. An air fryer that's slightly too large still cooks well with smaller batches — you just use less of the basket. One that's too small forces you to overcrowd food or cook in multiple batches, which takes longer and cooks less evenly.
What's the difference between quarts and liters for air fryers?
They're both measures of basket volume — 1 quart is about 0.95 liters. US listings almost always use quarts, UK and most other markets use liters, so the calculator shows both.
Do bigger air fryers cost more to run?
Larger air fryers do tend to have higher wattage, but they also often cook more food in one batch rather than requiring multiple cook cycles — so the actual cost per meal isn't necessarily higher. Use the running cost calculator to check a specific model's wattage.
What size Ninja air fryer should I get?
The same household-size guidance applies regardless of brand: 2-4 quarts for one person, 4-6 quarts for a couple, 6-8 quarts for a family of four, and 8+ quarts (often a dual-basket model) for larger households or batch cooking. Ninja's dual-basket models are worth considering if you regularly cook two different foods at once.