Microwave Oven Electricity Cost Calculator

Microwave ovens are rated in Watts (W) or Kilowatts (kW) if it is a commercial oven. To find out your oven's running cost, look-up the power output (usually found on the back of the machine or in the manual) then use our energy calculator below to see approximately how much it costs to run per minute.

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Power Output	Per 5 mins	Per 15 mins	Per 30 mins	Per 60 mins
700W	~£0.02 82W	~£0.06 245W	~£0.12 490W	~£0.24 980W
800W	~£0.02 93W	~£0.07 280W	~£0.14 560W	~£0.27 1120W
900W	~£0.03 105W	~£0.08 315W	~£0.15 630W	~£0.31 1260W
1000W (1kW)	~£0.03 117W	~£0.09 350W	~£0.17 700W	~£0.34 1400W
1200W (1.2kW)	~£0.03 140W	~£0.10 420W	~£0.21 840W	~£0.41 1680W
1500W (1.5kW)	~£0.04 175W	~£0.13 525W	~£0.26 1050W	~£0.51 2100W

*Microwaves energy input in Watts is usually more than its output in Watts, please check your user manual. On average a microwave will use 30% to 50% more energy than the rated output.

Electricity costs are calculated using the UK: Price Cap (Oct 2024) electricity rate of £0.24 per kWh (incl. VAT).

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