Electricity Cost Calculator — Find Your Appliance Running Cost [2026]
Enter wattage and usage hours, get daily, monthly & yearly electricity costs instantly. Includes AC, heater, PC & fridge presets. Free, no signup required.
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Total Electricity Cost
What is Electricity Cost Calculator?
How to Use Electricity Cost Calculator
Enter the wattage of your appliance (or select a preset for common appliances), the number of hours you use it per day, and your local electricity rate in $/kWh. The calculator instantly shows your daily, monthly, and yearly electricity costs for that appliance.
How Electricity Cost Calculator Works
Common Use Cases
- Identifying the most expensive appliances on your electric bill
- Comparing energy costs between old and new appliances to justify upgrades
- Calculating the cost of running a space heater, AC unit, or gaming PC
- Estimating the electricity cost of a home office setup
- Budgeting for monthly electricity expenses
- Deciding whether to switch to energy-efficient alternatives
Frequently Asked Questions
How do I find the wattage of my appliance?▼
Check the label on the appliance (usually on the back or bottom), look in the user manual, or search for the model number online. You can also use a plug-in electricity monitor (like a Kill-a-Watt meter) for the most accurate reading.
What is the average US electricity rate?▼
The average US residential electricity rate is approximately $0.16 per kWh. However, rates vary widely by state — from about $0.10/kWh in states like Idaho to over $0.30/kWh in Hawaii and parts of New England.
Which appliances use the most electricity?▼
The biggest electricity consumers are typically: central air conditioning (3,000-5,000W), electric water heaters (4,000-5,500W), clothes dryers (2,000-5,000W), space heaters (1,000-1,500W), and electric ovens (2,000-5,000W).
How can I reduce my electricity costs?▼
Use LED bulbs, unplug devices when not in use, use smart power strips, run appliances during off-peak hours, maintain HVAC filters, upgrade to Energy Star appliances, and adjust your thermostat by a few degrees.
Does this calculator account for standby power?▼
No, this calculator measures active usage cost. Many devices consume standby (phantom) power when plugged in but not actively used, typically 1-10 watts per device, which can add up across all household electronics.
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