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Clear answers for the things your home needs.

Get practical answers about warranty dates, appliance energy use and replacement savings. Free tools, with no account required.

How do I convert watts to kWh?

Divide watts by 1,000 to get kilowatts, then multiply by hours of operation. A 1,000-watt device running for one hour uses 1 kWh if its power draw stays constant.

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Home Tech Vault keeps home devices, receipts, warranties and maintenance records together. These free estimates are not automatically saved to your vault.

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