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 induction hob use?
Time the same recipe and food quantity. Replace example inputs with your own usage pattern.
1.26 kWhper day of use
7.56 €per month at 0.20 €/kWh
Worked example
1800 W × 1 h/day × 70 % load factor × 30 days.
37.80 kWh/month · 90.72 €/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 |
|---|---|
| Gentle cooking / small zone | 500–1,200 W average |
| Typical cooking | 1,200–2,000 W average |
| Boost / several zones | 2,000–7,000+ W instantaneous |
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
- Match pan size to the cooking zone.
- Use lids when practical.
- Do not confuse total connected load with average energy use.
Compare more appliances
Return to the appliance library or use the general electricity calculator for any device.
NEXT STEP
Keep exploring
Connected load is not the same as cooking consumption
An induction hob may have a high total connected load because several zones can operate at once, but normal cooking rarely means every zone runs at maximum power continuously. The energy used depends on the active zones, pan size, power level and cooking time.
Boost changes power, not necessarily total energy in the same way
Boost mode can draw high power for a short period. A fast boil may therefore use less total energy than a lower setting left on for much longer. The useful comparison is the kWh needed to complete the cooking task, not the peak wattage shown on the specification sheet.
Pan choice matters
Use compatible cookware with a base that matches the cooking zone. A poorly matched pan can increase heating time. Lids can also reduce the time needed to bring water or food to temperature.
For your own routine, use the induction hob calculator. If you are choosing between technologies, see induction vs ceramic hob.
Editorial review: 11 Oct 2026. Instantaneous connected load and monthly energy use are different quantities.
BRICODATO · PRACTICAL CHECK
Check the real energy use of your induction hob
A hob's connected maximum load is not its energy use per meal. Boost settings are short-lived and cooking zones modulate with the pan, level and temperature. Pan-base compatibility and size can affect how long a comparable amount of food takes.
Checklist to reproduce the comparison
- Time the same recipe and food quantity.
- Use compatible cookware and comparable lid conditions.
- Do not multiply every zone's maximum rating by the full cooking time.
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.