How do I calculate kWh from watts?

Multiply watts by hours used, then divide by 1000. For example: 100W × 10 hours ÷ 1000 = 1 kWh.

What appliances use the most energy?

Typically heating/cooling systems, water heaters, and large appliances like dryers and electric stoves.

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Calculate electricity consumption and costs for your home appliances

Electricity Rate ($/kWh)

Average US rate is $0.13/kWh

Appliance(type name or select below)

Wattage

Hours/Day

Days/Month

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Master the energy usage calculator with our comprehensive step-by-step guide, complete with examples, tips, and frequently asked questions.

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