Watts to kWh
kWh = (W ÷ 1,000) × hours × load factor. Multiply kWh by your electricity price to estimate energy cost.
🍟 Worked example
How much electricity does an air fryer use?
Time both preheating and a complete cooking batch. Replace example inputs with your own usage pattern.
0.60 kWhper day of use
3.60 €per month at 0.20 €/kWh
Worked example
1500 W × 0.4 h/day × 100 % load factor × 30 days.
18.00 kWh/month · 43.20 €/year
This is an energy-only estimate. Your bill can also include standing charges, taxes and other household consumption.
Typical reference range
Use the label, manual or manufacturer data for your exact model whenever possible.
| Type or situation | Indicative reference |
|---|---|
| Compact | 1,000–1,400 W |
| Medium size | 1,400–1,800 W |
| Large / dual basket | 1,700–2,500 W |
What changes the result?
Rated watts are only one part of the calculation.
Measure when possible
Thermostats, compressors, inverter control and programmes can make real consumption lower or higher than a simple maximum-power estimate.
Practical checks
- Avoid preheating when the recipe and manufacturer do not require it.
- Compare total cooking time with an oven, not watts alone.
- Keep the basket and air path clean.
Compare more appliances
Return to the appliance library or use the general electricity calculator for any device.
NEXT STEP
Keep exploring
Compare energy per cooking task, not watts alone
An air fryer can have a similar rated power to a small oven, but total energy depends on how long it runs, whether preheating is needed and how much food is being cooked. The useful comparison is the kWh needed to complete the same meal.
When the estimate can change
Large batches, repeated cooking cycles and dual-basket use can increase total runtime. Smaller portions may finish faster than in a full-size oven, but that advantage becomes smaller if several separate batches are required.
Use the same assumptions for both appliances
For a fair comparison, apply the same electricity price and compare real cooking duration. The air fryer vs oven comparison helps frame that decision, while the electricity calculator lets you test your own wattage and time.
If you are in Spain, use the current electricity price to turn kWh into an up-to-date cost estimate.
Editorial review: 11 Oct 2026. Actual energy use depends on programme, load and cooking time.
BRICODATO · PRACTICAL CHECK
Check the real energy use of your air fryer
Compare energy per finished portion rather than the nameplate watts alone. Record food quantity, any preheating and whether you needed several batches. A short single batch is a different task from cooking four portions in successive batches.
Checklist to reproduce the comparison
- Time both preheating and a complete cooking batch.
- Use metered kWh for thermostat cycling rather than assuming full power throughout.
- Compare against an oven cooking the same quantity to the same result.
The figures elsewhere on this page are illustrative assumptions, not a measured average for every model. Use the label, your actual cycle count and safely collected kWh readings.