Electricity Bill Calculator
Estimate monthly units and your electricity bill from the appliances you use.
Result
How to use
- 1
Set how many of each appliance you have, its wattage and hours used a day.
- 2
Enter your tariff per unit and the fixed charge from your bill.
- 3
See monthly units, the estimated bill and which appliances cost the most.
Questions
What is one unit of electricity?
One unit is 1 kilowatt-hour (kWh) — a 1,000-watt appliance running for one hour, or a 100-watt TV running for 10 hours.
Why is my real bill different?
Tariffs differ by state and most use slabs — the rate rises as you use more units. Some states give free or subsidised units, and bills also add electricity duty, fuel surcharges and fixed charges. Use the average rate from your last bill for the best estimate.
How can I reduce my bill?
AC, geysers and old fridges use the most power. Set the AC to 24–26 °C, use 5-star rated appliances, switch to LED lights and BLDC fans, and switch off the geyser after use.
About this Electricity Bill tool
Electricity Bill Calculator — Estimate monthly units and your electricity bill from the appliances you use. It is one of 200 free tools on namasivayam.in, made by software engineer Namasivayam Vadivelan for everyday use in India.
Everything is calculated instantly in your browser: nothing you type or upload is sent to any server, there is no sign-up, and it works on mobile and desktop. Set how many of each appliance you have, its wattage and hours used a day.
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Results are estimates to help you plan. They are not financial, tax or medical advice.