How many watts does a typical household microwave oven use?

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Cifra · Accepted Answer

1,000 watts. A typical countertop household microwave runs at around 1,000 watts of cooking power, though compact models dip closer to 600 and larger ones can exceed 1,200. The wattage on the box is the microwave's OUTPUT power for cooking — the appliance actually draws more electricity from the wall than that to produce it. Reason from what it has to do. Heating a mug of water in a couple of minutes requires a few hundred kilojoules delivered in about a hundred seconds, which works out to a power in the kilowatt range. Energy divided by time is the whole calculation, and the everyday task defines the specification. The distinction in the explanation is the one that catches people: the wattage on the box is cooking output, not electricity drawn. The appliance consumes meaningfully more from the socket than it delivers as microwave energy, because the conversion is not perfectly efficient — so a thousand-watt microwave is a larger load on a circuit than its label suggests. That output-versus-input distinction recurs across appliance specifications and is a common source of confusion when sizing circuits, generators or solar systems. Whenever a device is rated in watts, it is worth asking which watts — the ones going in or the ones coming out.

Source	U.S. Department of Energy, Energy Saver guide
Figure refers to	2023
Last checked	September 2, 2026
Unit	watts

How many watts does a typical household microwave oven use?

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