Everyday
Electricity Cost Calculator
Cost to run an appliance — kWh used plus monthly and yearly projections.
Inputs
Electricity Cost Calculator
Result
Cost over 30 days
$2.25
- Energy used
- 15 kWh
- Monthly cost (30 d)
- $2.25
- Yearly cost (365 d)
- $27.38
How it's calculated
kWh = W × h ÷ 1000; cost = kWh × price_per_kWh
Common questions
How do I find an appliance's wattage?
Check the rating label (usually on the back or bottom) or the manual. If only volts and amps are shown, multiply them to get watts.
Does standby power matter?
Yes — devices in standby can draw 1–10 W continuously. Add standby hours × standby watts to catch the 'vampire' load in your estimate.
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