EXPLAINER

Air Fryer vs Convection Oven vs Microwave: Which to Buy

Air Fryer vs OTG vs Microwave comparison 2026: cooking results, power consumption, health benefits. Air fryer uses 80% less oil.

Updated Jan 2026Running costs included10 min read

As an Amazon Associate we earn from qualifying purchases. We could also earn a fee through some links when you click on them.

Quick answer: air fryer vs OTG vs microwave

Air fryer, convection oven (OTG) and microwave compared across six attributes
Feature	Air fryer	Convection oven (OTG)	Microwave
Best for	Crispy snacks, fries, tikka	Baking, roasting, grilling	Reheating, quick cooking
Oil needed	1–3 tsp	Light brushing	None, but no crisp
Cooking time	Fast, no preheat	Slow, 10–15 min preheat	Fastest
Power	1,200–1,800W	1,200–2,000W	700–1,200W
Capacity	2–8 litres	15–60 litres	20–32 litres
Price range	₹3,000–15,000	₹3,000–25,000	₹5,000–25,000

Scroll the table sideways to see all columns.

THE BOTTOM LINE

Air fryer for healthy snacking — samosas, pakoras and tikka with 80% less oil. OTG for baking cakes, cookies and large roasts. Microwave for reheating and quick cooking.

Most Indian kitchens are better served by two of these than by one that tries to do everything.

How each one actually works

All three heat food. The mechanism differs completely, and that mechanism is what decides which dishes each one is good at.

1

Air fryer

A compact convection oven with a powerful fan circulating hot air up to 200°C. The rapid circulation crisps the exterior much like deep frying, using very little oil. Think of it as a turbocharged mini oven.
2

Convection oven (OTG)

Heating elements top and bottom, plus a fan to spread the heat evenly. Larger than an air fryer, and the even distribution is exactly what baking needs. OTG stands for Oven, Toaster, Griller.
3

Microwave

Electromagnetic waves vibrate the water molecules in food, generating heat from the inside out. It is the fastest method, but it does not brown or crisp. Convection microwaves add an element and fan to fix that.

AIR FRYER

Rapid air technology (Maillard reaction)
Temperatures up to 200°C
No preheating needed
Basket design built for airflow

OTG / CONVECTION OVEN

Top and bottom heating elements
Fan for even heat distribution
Large capacity, 15–60L
Multiple rack positions

MICROWAVE

Magnetron generates microwaves
Heats food from the inside out
The fastest method by far
Solo, grill or convection modes

Best appliance for Indian dishes

Nine Indian dishes and which of the three appliances handles each best
Dish	Air fryer	OTG	Microwave	Winner
Samosas	Crispy, healthy	Good but slower	Soggy	Air fryer
Tandoori chicken	Great char	Authentic	No char	OTG
Pakoras and bhajias	Perfect crisp	Not crispy	Rubbery	Air fryer
Cake and cookies	Small batches only	Best results	Convection mode	OTG
Pizza	Small size only	Proper crust	Convection mode	OTG
Reheating dal or sabzi	Dries out	Too slow	Perfect	Microwave
French fries	Restaurant quality	Decent	Soggy	Air fryer
Paneer tikka	Quick and crispy	Authentic char	No browning	Air fryer
Idli and dhokla	Not suitable	Not suitable	Good steaming	Microwave

Scroll the table sideways to see all columns.

Four real kitchen scenarios

WEEKEND SNACKS

Air fryer wins

Samosas, pakoras, cutlets and spring rolls, all crisp on 1 tsp of oil instead of two cups.

BIRTHDAY CAKES

OTG wins

Even heat, proper browning, and the capacity a layer cake needs.

TIFFIN REHEATING

Microwave wins

Two to three minutes for dal-chawal, sabzi and roti, with nothing drying out.

PARTY APPETISERS

Air fryer wins

Batch after batch of crisp starters, without filling the flat with frying smell.

Oil, calories and the health case

Oil used and calories from oil per 500g of food, by cooking method
Method	Oil used	Calories from oil	Saving vs deep fry
Deep frying	200–300ml, 50–80ml absorbed	450–720 cal	—
Air fryer	5–15ml (1–3 tsp)	45–135 cal	80–90% less
OTG (baking)	10–20ml, light brush	90–180 cal	75–85% less
Microwave	0ml	0 cal from oil	100%, but no crisp

Scroll the table sideways to see all columns.

WHAT AIR FRYING GIVES YOU

80–90% less oil than deep frying
Roughly 90% less acrylamide, a cancer-linked compound
No reused oil, which is where harmful compounds form
The same crisp texture without the fat load
Useful for heart patients, diabetics and weight watchers

WHAT IT DOES NOT FIX

Air-fried food is still fried. Eat it in moderation.
High heat costs some nutrients, whatever the method
Microwaving preserves the most, because it is quick
Steaming vegetables is healthier than any of this
Avoid burnt or charred food across all three

Power consumption and running costs

All figures below assume ₹8 per kWh.

Wattage, typical use time and electricity cost by appliance, at ₹8 per kWh
Appliance	Wattage	Typical use	Cost per use	Monthly, daily use
Air fryer (4–5L)	1,400–1,700W	15–25 min	₹3–6	₹90–180
OTG (25–30L)	1,500–2,000W	30–60 min plus preheat	₹6–16	₹180–480
Microwave (solo)	700–900W	2–10 min	₹0.5–1.5	₹15–45
Microwave convection	900–1,400W	15–30 min	₹2–6	₹60–180

Scroll the table sideways to see all columns.

WATTAGE IS NOT THE WHOLE STORY

An air fryer draws more watts than a microwave, but it runs for less time. That changes the arithmetic.

No preheating. Saves 10 to 15 minutes against an OTG.
Faster cooking. Less total time drawing power.
Per dish. Often similar to an OTG despite the higher rating.
Microwave. Cheapest for reheating, but it cannot crisp.

Sizing each one

AIR FRYER

2–3L. Singles and couples, side dishes
4–5L. Family of three or four — the popular size
6–8L. Large families and batch cooking

4.5L handles four servings of fries, or six to eight samosas.

OTG

15–20L. Small bakes, 6-inch cakes
25–35L. Standard baking — the popular size
40–60L. Semi-professional, large roasts

25–30L fits an 8-inch cake, a 12-inch pizza or a whole chicken.

MICROWAVE

17–20L. Reheating only (solo)
23–28L. Family use — the popular size
28–32L. Convection plus large bowls

23L is the minimum that takes a standard dinner plate.

Which should you buy?

BUY AN AIR FRYER IF

You love fried snacks but want less oil
You want quick weeknight dinners with no preheat
You are health-conscious but miss crisp food
Counter space is tight

BUY AN OTG IF

You bake regularly — cakes, cookies, bread
You roast large items like a whole chicken
You want a proper pizza crust
Preheating time does not bother you

BUY A MICROWAVE IF

You are mostly reheating leftovers
You want instant oats and popcorn speed
Your schedule leaves no time to cook slowly
This is your first kitchen appliance

THE COMBINATION THAT WORKS

Microwave plus air fryer

Covers about 90% of what an Indian kitchen needs
Microwave handles reheating and quick cooking
Air fryer handles snacks and anything crisp
Add an OTG only if you actually bake

Frequently asked questions

Can an air fryer replace an OTG?

Partially. An air fryer manages small bakes such as muffins and small cakes, but it lacks the capacity and even heat serious baking needs. If you bake regularly, buy the OTG. For snacks and quick meals the air fryer is the better tool.

Is a convection microwave the same as an air fryer?

The principle is the same — circulating hot air — but an air fryer moves that air harder and more directly, so it crisps better. A convection microwave does several jobs adequately and none of them best. The air fryer beats it for frying; the OTG beats it for baking.

Do air fryers use a lot of electricity?

They draw more watts than a microwave, at 1,400 to 1,700W, but they run for less time, so the total cost lands similar or lower. A typical session costs ₹3 to ₹6. Set against the oil and gas that deep frying uses, air frying is often cheaper overall.

Which is best for beginners?

A microwave, because it is the hardest to ruin food in. An air fryer suits anyone who wants simple, healthier cooking. An OTG has the steepest learning curve — temperature and timing both matter — but rewards it with the best baking.

Can I make rotis in any of these?

Not really. Rotis need direct high heat from a tawa or a gas flame. You can reheat one in a microwave, wrapped in a damp paper towel, or crisp it in an air fryer for a minute. For fresh rotis, use the traditional method or a roti maker.

Air Fryer vs Convection Oven vs Microwave: Which to Buy

Quick answer: air fryer vs OTG vs microwave

How each one actually works

Air fryer

Convection oven (OTG)

Microwave

Best appliance for Indian dishes

Four real kitchen scenarios

Air fryer wins

OTG wins

Microwave wins

Air fryer wins

Oil, calories and the health case

Power consumption and running costs

Sizing each one

Which should you buy?

Microwave plus air fryer

Frequently asked questions

You may also like