Estimate device-level monthly and annual electricity cost, compare the largest loads, and model up to six appliances from actual usage patterns.
Change the inputs that matter to your decision. Optional assumptions stay collapsed until you need them.
Use the all-in energy rate from your bill where possible. Standby or cycling loads are best entered as average watts.
Add only complete rows. Blank rows are ignored.
201.9 kWh per month across 3 modeled appliances.
Refrigerator is your highest-cost appliance (18.36/month).
| Refrigerator | $18.36108.0 kWh/month |
|---|---|
| Desktop computer | $4.4926.4 kWh/month |
| Space heater | $11.4867.5 kWh/month |
This models the appliances entered, not the full utility bill. Cycling, standby draw, seasonal behavior, and taxes can change actual cost.
Practical notes about the inputs, assumptions, and result.
Use measured average watts when available. Rated watts can overstate cycling loads such as refrigerators and variable-speed equipment.
The result includes only the appliances entered. A bill can also include HVAC, water heating, standby loads, delivery, fixed charges, taxes, and seasonal usage.
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