★ EVERYDAY · APPLIANCES · COMPARISONS
The microwave saves $51.71 a year at the defaults: $10.34 for the microwave against $62.05 for the air fryer. Enter your sessions per day, watts, minutes per session, and electricity price to see which one is cheaper in your kitchen. This is electricity cost only: the appliance itself is not included.
The microwave draws less power and finishes in minutes, while the air fryer draws more and cooks longer. The yearly bill settles it: watts times minutes times sessions, priced per kilowatt-hour, for each appliance side by side.
At the defaults the microwave uses 0.08 kWh per session (1000 watts for 5 minutes) and the air fryer uses 0.50 kWh per session (1500 watts for 20 minutes). Over 730 sessions a year — 2 a day for 365 days — that is 60.83 kWh for the microwave and 365.00 kWh for the air fryer, and at $0.17 per kWh the bills are $10.34 a year and $62.05 a year. The gap is $51.71 a year in the microwave's favour. That is a real saving, but read it honestly: it is $51.71 spread over a whole year of cooking, and it buys the microwave's speed, not the air fryer's crispness. The structure matters more than the headline, because the same watts-times-minutes logic decides every appliance comparison, and the branches below show exactly where this one holds — and the one place it flips.
The microwave wins every single-portion scenario, and this page says so plainly: a 5-minute reheat will never lose to a 20-minute cook. The only oven-style win the air fryer gets is bulk cooking. Eight portions need eight separate 5-minute microwave sessions — 0.67 kWh in total — while one 20-minute air fryer batch cooks all eight at once for 0.50 kWh. That is an air fryer saving of 0.17 kWh a meal, or $0.03 a meal at $0.17 per kWh, which adds up to $10.34 a year if you cook eight portions that way every single day. It is a genuine exception, and it is deliberately small: it only appears when the microwave has to repeat itself and the air fryer does not. For one or two portions, the microwave wins by a wide margin every time.
Rounding convention, stated plainly: each yearly energy total is rounded to two decimals, each yearly cost is rounded to cents, and the gap is the difference of the rounded annual costs — so $62.05 minus $10.34 is exactly $51.71, and every branch figure adds up exactly as printed.
| Output | Formula | What it means |
|---|---|---|
| Microwave kWh per year | 1000 W × 5 min ÷ 60 ÷ 1000 × 730 | 60.83 kWh a year at the defaults. |
| Air fryer kWh per year | 1500 W × 20 min ÷ 60 ÷ 1000 × 730 | 365.00 kWh a year at the defaults. |
| Microwave cost per year | 60.83 kWh × $0.17 | $10.34 a year at the defaults. |
| Air fryer cost per year | 365.00 kWh × $0.17 | $62.05 a year at the defaults. |
| Yearly gap | Rounded air fryer cost − rounded microwave cost | $62.05 − $10.34 = $51.71 a year at the defaults. |
| Bulk-cooking exception | 8 × 5-min microwave sessions (0.67 kWh) vs one 20-min air fryer batch (0.50 kWh) | Air fryer saves $0.03 a meal, or $10.34 a year if cooked daily. |
This is an electricity model, not a meter reading. It assumes each appliance draws its rated watts for the whole session, while real appliances cycle their heaters once they reach temperature, so real use is usually a little lower on both sides — the air fryer more than the microwave, which runs at near-full power for its short bursts. It excludes the appliance purchase, and it counts only the running minutes you enter — not preheating beyond what you include in the minutes, standby draw, or a second round when the first batch does not fit. Air fryer times vary a lot by model and by how full the basket is, so time your own typical cycle rather than trusting the preset. Enter your own label watts and timed minutes for the most accurate result.
Bright Side Kit. "Microwave vs Air Fryer: Yearly Energy Cost Calculator" https://brightoolbox.com/microwave-vs-air-fryer/ Accessed October 24, 2026.At the defaults, yes, by a wide margin: the microwave costs $10.34 a year (60.83 kWh) against the air fryer's $62.05 a year (365.00 kWh), a saving of $51.71 a year.
$10.34 a year at the defaults: 1000 watts, 5 minutes a session, 2 sessions a day, 730 sessions a year, at $0.17 per kWh, for 60.83 kWh a year.
$62.05 a year at the defaults: 1500 watts, 20 minutes a session, 2 sessions a day, 730 sessions a year, at $0.17 per kWh, for 365.00 kWh a year.
Only when it cooks in bulk. Eight portions need eight 5-minute microwave sessions (0.67 kWh) while one 20-minute air fryer batch cooks all eight for 0.50 kWh, so the air fryer saves $0.03 a meal, or $10.34 a year if you cook that way daily. For one or two portions, the microwave wins every time.
Then the microwave costs $5.17 a year (30.42 kWh) and the air fryer $31.03 a year (182.50 kWh), a saving of $25.86 for the microwave.
Then the microwave costs $20.68 a year (121.67 kWh) and the air fryer $124.10 a year (730.00 kWh), a saving of $103.42 for the microwave.
No: at $0.30 per kWh the microwave costs $18.25 a year and the air fryer $109.50 a year, a saving of $91.25 for the microwave. The gap grows in dollars but the winner stays the same.
The appliance purchase, standby draw, preheating beyond the minutes you enter, and any second round when the first batch does not fit. It is running electricity cost only, at the watts and minutes you enter.