Calculate Your Electricity Bill Online Free
Estimate your electricity costs accurately with our free online calculator. Add all your household appliances, set their wattage and daily usage hours, and instantly see your daily, monthly, and yearly electricity expenses.
Key Features
- ⚡ Real-Time Calculation: Instant cost updates as you add or modify appliances
- 📱 24+ Preset Appliances: Common appliances with accurate wattage values
- ✏️ Custom Appliances: Add any appliance with custom wattage
- 💰 Multi-Currency: Support for USD, EUR, GBP, INR, and more
- 📊 Detailed Breakdown: See cost per appliance and total
- 🔒 100% Private: All calculations happen in your browser
How to Calculate Electricity Cost
The electricity cost formula is simple: Cost = (Wattage × Hours × Days × Rate) / 1000
- Find the wattage of your appliance (usually on the label)
- Estimate daily usage hours
- Enter your electricity rate (from your bill, per kWh)
- The calculator does the rest!
Common Appliance Wattages
- LED Bulb: 10W | CFL Bulb: 15W | Incandescent: 60W
- Ceiling Fan: 75W | Air Conditioner (1.5T): 1500W
- Refrigerator: 150W | Washing Machine: 500W
- Television (LED): 50-100W | Desktop Computer: 200W
- Water Heater: 2000W | Microwave: 1000W
Energy Saving Tips
- 💡 Switch to LED bulbs - save up to 80% on lighting costs
- ⭐ Choose 5-star rated appliances for maximum efficiency
- ❄️ Set AC temperature to 24-26°C for optimal efficiency
- 🔌 Unplug devices when not in use to avoid standby power consumption
- ☀️ Use natural light during daytime whenever possible
Frequently Asked Questions
How do I calculate electricity cost for an appliance?
Use the formula: (Wattage × Hours of Use × Rate per kWh) / 1000. Our calculator does this automatically for each appliance you add.
What is a kWh?
A kilowatt-hour (kWh) is a unit of energy equal to spending 1,000 watts for one hour. This is the standard unit used by utility companies for billing.
How can I find the wattage of my appliance?
Look for a sticker or nameplate on the back or bottom of the appliance. It usually lists the Power in Watts (W). If only Amps are listed, multiply Amps by Voltage (e.g., 120V or 230V) to get Watts.
Does the calculator account for tiered billing?
Our tool uses a flat rate per kWh for simplicity. If your provider uses tiered billing, you can use your average cost per kWh for a close estimate.
Are my appliance lists saved?
Yes, we save your list locally in your browser so you can return later to update your usage or add new appliances without starting over.