Electricity Bill Calculator
Estimate your monthly electricity bill by adding appliances, usage hours, and your rate per unit
Calculate Your Electricity Bill
Electricity Bill Estimate
| Appliance | Watts | Qty | Hrs/Day | Units (kWh) | Cost (₹) |
|---|
How to Use the Electricity Bill Calculator
- Click the Add Appliance button and enter each appliance name, its wattage in watts, the quantity you own, and daily usage hours.
- Enter your electricity rate per unit (kWh) as charged by your power distribution company. The default is set for Indian tariffs.
- Choose your billing cycle as 30 days (monthly) or enter a custom number of days to match your actual billing period.
- Click the Calculate Bill button to see a detailed breakdown of each appliance consumption and your total estimated electricity bill.
- Review the per-appliance cost breakdown, adjust wattage or hours to see how changes affect your bill, or clear all to start fresh.
Key Features
Multi-Appliance Support
Add unlimited appliances with individual wattage, quantity, and usage hours for accurate total consumption.
Detailed Cost Breakdown
See per-appliance kWh consumption and cost alongside the total bill for clear visibility into power usage.
Indian Tariff Default
Pre-set with average Indian domestic rate of ₹7 per unit, easily adjustable to match your state tariff.
Custom Billing Period
Set any billing cycle from 1 to 366 days to match bimonthly billing, seasonal calculations, or yearly estimates.
Privacy First
All calculations happen in your browser. No data is stored, transmitted, or shared with anyone.
Works on Any Device
Fully responsive design works on mobile phones, tablets, and desktops without installing any app.
How Electricity Bill Calculation Works
Electricity bills are based on the number of units (kilowatt-hours) you consume during a billing period. Here is the standard formula used worldwide:
Units (kWh) = (Wattage × Quantity × Hours per Day × Number of Days) ÷ 1000
Total Bill (₹) = Total Units × Rate per UnitWattage: Power rating of the appliance in watts (W), found on the appliance label.
Quantity: Number of identical appliances in your home (e.g., 4 ceiling fans).
Hours per Day: Average number of hours the appliance runs daily.
Number of Days: Your billing period, usually 30 days for monthly billing in India.
Rate per Unit: Price charged per kWh by your electricity distribution company (DISCOM).
We divide by 1000 because wattage is in watts, but billing units are in kilowatts. One kilowatt equals 1000 watts. The calculator sums up consumption across all appliances to give you the total estimated bill.
Practical Examples
🇮🇳 Priya from Mumbai, Maharashtra
Priya has 3 ceiling fans (75W each, 12 hrs/day), 1 refrigerator (150W, 24 hrs/day), 6 LED bulbs (10W each, 6 hrs/day), and 1 AC (1500W, 8 hrs/day) at ₹8/unit for 30 days.
Fans: (75 × 3 × 12 × 30) ÷ 1000 = 81 kWh → ₹648
Fridge: (150 × 1 × 24 × 30) ÷ 1000 = 108 kWh → ₹864
LEDs: (10 × 6 × 6 × 30) ÷ 1000 = 10.8 kWh → ₹86.40
AC: (1500 × 1 × 8 × 30) ÷ 1000 = 360 kWh → ₹2,880
Total: 559.8 kWh = ₹4,478.40 estimated monthly bill
🇮🇳 Ramesh from Jaipur, Rajasthan
Ramesh uses 2 desert coolers (200W each, 14 hrs/day), 4 fans (70W, 10 hrs/day), and 1 water heater (2000W, 0.5 hrs/day) at ₹6.50/unit for 30 days.
Coolers: (200 × 2 × 14 × 30) ÷ 1000 = 168 kWh → ₹1,092
Fans: (70 × 4 × 10 × 30) ÷ 1000 = 84 kWh → ₹546
Heater: (2000 × 1 × 0.5 × 30) ÷ 1000 = 30 kWh → ₹195
Total: 282 kWh = ₹1,833 estimated monthly bill
🇮🇳 Ananya from Bengaluru, Karnataka
Ananya works from home with 1 laptop (65W, 10 hrs/day), 1 monitor (30W, 10 hrs/day), 1 WiFi router (12W, 24 hrs/day), and 1 AC (1200W, 6 hrs/day) at ₹7.50/unit for 30 days.
Laptop: (65 × 1 × 10 × 30) ÷ 1000 = 19.5 kWh → ₹146.25
Monitor: (30 × 1 × 10 × 30) ÷ 1000 = 9 kWh → ₹67.50
Router: (12 × 1 × 24 × 30) ÷ 1000 = 8.64 kWh → ₹64.80
AC: (1200 × 1 × 6 × 30) ÷ 1000 = 216 kWh → ₹1,620
Total: 253.14 kWh = ₹1,898.55 estimated monthly bill
🇺🇸 Mike from Houston, Texas
Mike uses 1 central AC (3500W, 10 hrs/day), 1 electric dryer (5000W, 1 hr/day), and 1 dishwasher (1800W, 1 hr/day) at $0.12/kWh (~₹10) for 30 days.
AC: (3500 × 1 × 10 × 30) ÷ 1000 = 1050 kWh → ₹10,500
Dryer: (5000 × 1 × 1 × 30) ÷ 1000 = 150 kWh → ₹1,500
Dishwasher: (1800 × 1 × 1 × 30) ÷ 1000 = 54 kWh → ₹540
Total: 1254 kWh = ₹12,540 (or ~$150.48) estimated monthly bill
What Is an Electricity Bill Calculator?
An electricity bill calculator is a tool that estimates your power consumption cost based on the wattage of your appliances, how many hours you use them daily, and the rate your electricity provider charges per unit (kWh). It helps households and businesses understand which appliances consume the most energy and plan their usage accordingly.
In India, electricity is distributed by state-level DISCOMs (Distribution Companies) like MSEDCL in Maharashtra, BESCOM in Karnataka, and BSES/NDPL in Delhi. Each state has different tariff slabs and fixed charges. While this calculator provides a consumption-based estimate, your actual bill may include additional charges such as fuel adjustment cost, electricity duty, and meter rent.
Understanding your electricity consumption pattern is the first step toward reducing your bill. By identifying high-consumption appliances like air conditioners, water heaters, and electric geysers, you can make informed decisions about upgrading to energy-efficient models or adjusting usage patterns.
Electricity Bill in Multiple Languages
📖 Want to learn tips on reducing your electricity bill and understanding tariff slabs?
Read Our Complete Guide to Electricity Bill Calculation →Frequently Asked Questions
Is this electricity bill calculator free to use?
How is electricity consumption calculated?
What is a unit of electricity (kWh)?
What is the average electricity rate in India?
Can I calculate the bill for multiple appliances at once?
Does this calculator account for slab rates?
How do I find the wattage of my appliance?
Can I use this calculator for commercial electricity bills?
Why is my actual bill different from the estimated bill?
How can I reduce my electricity bill?
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