Electricity Cost Calculator | What Your Appliances Cost
Estimate the daily, monthly, and annual electricity consumption and cost of any household appliance based on usage and local rates.
Appliance Details
Find on label (back/bottom). Or multiply Amps × Volts.
Example: For 15 minutes, enter 0 hrs and 15 mins.
Check utility bill. See US Average Rates.
How many days each month do you use this?
Leave at 12 for year-round use. Lower for seasonal items (e.g. Heaters).
Adjusts calculation for devices that cycle on/off automatically.
Daily Cost
0 kWh/day
Monthly Cost
0 kWh/mo
Estimated Annual Cost
$0.00
Usage: 0 kWh/year
CO₂ Emissions
0 kg
approx per year
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What Your Result Means
Your result shows the estimated daily, monthly, and annual cost to run this specific appliance. If it costs $50/year, that's significant but may not be your biggest opportunity. Focus on the top energy consumers first: HVAC (45-50% of your bill), water heating (14-18%), and lighting (10-13%). Use this result to identify high-cost appliances and prioritize upgrades by ROI (payback period).
How to Find Your Appliance's Wattage
- Check the label: Look for a nameplate on the back or bottom listing "Watts" (W).
- Calculate it: If only Amps and Volts are listed, multiply them:
Amps × Volts = Watts. - Search Online: Google "[Brand] [Model] wattage".
- Energy Star: Check the product database at energystar.gov.
Typical Appliance Wattages
| Appliance | Typical (W) |
|---|---|
| Electric Kettle | 1500W |
| Refrigerator | 150-600W |
| Tumble Dryer | 4000W |
| Air Conditioner | 1500-3500W |
| LED TV | 100W |
| Laptop | 50-100W |
Which Appliances Use the Most?
- HVAC (45-50%): Heating and cooling is the biggest target.
- Water Heater (14-18%): Lowering temp to 120°F saves significant money.
- Lighting (10-13%): LEDs save ~$4/bulb/year.
- Phantom Load (5-10%): Unplug standby devices to save ~$100/year.
Top Energy-Saving Tips
- Adjust Thermostat: +/- 7-10°F when away saves ~10%.
- Smart Power Strips: Automatically cut power to standby devices.
- Cold Water Wash: 90% of washer energy goes to heating water.
- Upgrade: ENERGY STAR appliances often pay for themselves in 3-7 years.
Calculate Upgrade Savings
Use this formula to see if an upgrade is worth it:
(Old Annual Cost - New Annual Cost) = Annual Savings
Upgrade Price ÷ Annual Savings = Years to Payback
Example: Replacing a $40/yr dryer with a $15/yr heat-pump dryer saves $25/year. If the new dryer costs $400, it takes 16 years to pay back (low priority). If a utility rebate lowers the cost to $200, payback is 8 years.
Frequently Asked Questions
Why does my refrigerator estimate seem lower than expected?
Refrigerators cycle on/off to maintain temperature. We apply the DOE rule (runtime ≈ plug-in hours ÷ 3). A 150W fridge plugged in 24h/day only runs for ~8 hours, consuming ~1.2 kWh, not 3.6 kWh.
How do I find wattage if the label is missing?
Check the manual, search "[Brand] [Model] wattage" online, or multiply Amps × Volts from the label. You can also use a plug-in electricity meter.
Does standby power matter?
Yes. "Phantom load" accounts for 5-10% of typical bills ($100-200/year). Smart power strips can eliminate this waste.
Which appliances are worth upgrading?
Prioritize HVAC (>15 years old), Water Heaters (switch to heat pump), and old Refrigerators. These offer the fastest payback.
About This Calculator
Methodology: Daily kWh = (Watts × Hours) ÷ 1,000. Calculations align with DOE and Energy Star guidelines. We assume the US average grid mix (0.4 kg CO₂/kWh) for emissions.
Privacy: This calculator does NOT collect, store, or transmit your data. All calculations happen in your browser.
Disclaimer: Estimates only. Actual consumption varies by model, age, and usage. Check your utility bill for exact rates.