How Many Watts Does a Microwave Use?

Answer
1,200 W typical (800–1,500 W)

A microwave uses about 1,200 watts while running. At a typical 15 minutes a day that is 9.0 kWh per month, or about $1.53 at $0.17/kWh. The label shows cooking power (for example 1,000 W); the microwave draws about 1.5× that from the outlet.

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    For estimating and educational purposes only. Results are approximate and are not a substitute for a licensed professional, the manufacturer's instructions or your local code. Disclaimer

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    Microwave power use at a glance

    Value
    Typical running watts1,200 W
    Range800–1,500 W
    Current at 120 V10.0 A
    Typical use15 min per day
    Energy per day0.30 kWh
    Energy per month9.0 kWh
    Cost per month ($0.17/kWh)$1.53
    Cost per year$19

    Check the label on your appliance for its exact rating. The calculator above uses your own watts, hours and electricity rate.

    Frequently asked questions

    Can I run a microwave on a generator?

    Yes. Choose a generator whose running watts exceed 1,200 W.

    How many amps does a microwave draw?

    About 10.0 A at 120 V.

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