Electricity Consumption Calculator
Calculate your energy usage and estimate your electricity costs
Appliance Details
Electricity Rate
Calculation Results
Energy Saving Tip
Unplug electronics when not in use to prevent "phantom load" energy consumption.
My Saved Appliances
Energy Saving Tips
Adjust Your Thermostat
For each degree you lower your thermostat in winter or raise it in summer, you can save 1-3% on your energy bill.
Switch to LED Bulbs
LED bulbs use at least 75% less energy and last 25 times longer than incandescent lighting.
Wash Clothes in Cold Water
About 90% of the energy used by washing machines goes to heating water. Switching to cold can save significant energy.
Seal Air Leaks
Sealing cracks and adding insulation can reduce heating and cooling costs by up to 20%.
Use Smart Power Strips
"Phantom loads" from electronics in standby mode can account for 10% of your electricity use. Smart strips eliminate this waste.
Electricity Consumption Calculator FAQ
Basic Usage
The calculator estimates energy usage by multiplying appliance wattage by hours used per day. This gives watt-hours, which are converted to kilowatt-hours (kWh) - the standard unit for electricity billing. You can input multiple appliances to get your total consumption.
You'll need: 1) Appliance wattage (found on labels or manuals), 2) Daily usage hours, 3) Your electricity rate (cost per kWh from your utility bill). For appliances with variable power, we provide average estimates you can use.
The calculator provides estimates based on your inputs. For best accuracy, use actual wattage from appliance labels and precise usage patterns. Real-world consumption may vary due to factors like appliance age, maintenance, and environmental conditions.
Calculations & Results
Multiply appliance wattage by hours used per day to get daily watt-hours. Divide by 1000 to convert to kWh, then multiply by your electricity rate. Example: A 100W bulb used 5 hours/day at $0.12/kWh costs (100×5)/1000×0.12 = $0.06/day or $1.80/month.
Phantom loads (standby power) are the electricity devices consume when turned off but still plugged in (e.g., TVs, chargers). These typically use 1-5 watts continuously. Account for them by estimating 2-10% of total usage or using a watt meter for precise measurement.
Key strategies: 1) Use ENERGY STAR appliances, 2) Switch to LED lighting, 3) Install programmable thermostats, 4) Unplug unused devices, 5) Use power strips, 6) Maintain HVAC systems, 7) Wash clothes in cold water, 8) Identify biggest energy users with our calculator.
Advanced Features
Yes, our calculator allows you to save your appliance list and consumption data. You can create an account to store your calculations permanently or export them as a PDF/CSV file for offline access and comparison over time.
Our calculator includes seasonal adjustment factors for appliances affected by weather (like HVAC systems). You can input different usage patterns for summer/winter or use our automatic seasonal adjustment based on your location.
Yes, our premium version provides benchmarking against similar households in your area based on size, appliance types, and local climate data. This helps identify if your consumption is higher than average.