Everyday Money: Tips, Tax, Discounts and Bills Made Simple
The quick calculations that save you money every day — splitting a bill with a tip, adding and removing tax, checking a discount is real, comparing unit prices and estimating your bills.
Electricity Bill Calculator
Verified formula Updated Jun 2026 Private — runs on your device
Verified formula
Private
Total cost
₹1,200.00
- Units consumed (kWh)
- 150.00
- Cost per day
- ₹40.00
For general information only — not financial, tax, legal or medical advice. Verify before you rely on it.
How to use the Electricity Bill Calculator
The Electricity Bill Calculator works out your total cost, along with 2 related figures in an instant. Enter appliance power, hours used per day and number of days and the result updates as you type — it is free, needs no sign-up, and runs entirely in your browser so your figures stay private.
- Enter the appliance power.
- Enter the hours used per day.
- Enter the number of days.
- Enter the cost per unit (kwh).
- Read off your total cost, together with units consumed (kwh) and cost per day — the calculator updates automatically, with no button to press.
Formula
The Electricity Bill Calculator uses the formula:
Total cost = Appliance power ÷ 1000 × Hours used per day × Number of days × Cost per unit (kWh)
Worked example
For example, with appliance power of 1,000 watts, hours used per day of 5, number of days of 30 and cost per unit (kwh) of ₹8, the total cost is ₹1,200.00.
| Appliance power | 1,000 watts |
|---|---|
| Hours used per day | 5 |
| Number of days | 30 |
| Cost per unit (kWh) | ₹8 |
| Total cost | ₹1,200.00 |
|---|---|
| Units consumed (kWh) | 150.00 |
| Cost per day | ₹40.00 |
Results are estimates for educational use, not professional advice.
Frequently asked questions
Energy in kWh equals power in watts ÷ 1000 × hours used. Multiply the kWh by your cost per unit to get the cost. A 1000 W appliance used 5 hours a day for 30 days uses 150 kWh.
A kilowatt-hour (kWh), often called a unit on your bill, is the energy used by a 1000 W appliance running for one hour. Bills charge a rate per kWh.
It is shown on your electricity bill, usually as a per-unit or per-kWh tariff. Some areas use slab tariffs, so use your average rate for an estimate.
It is a close estimate. Real bills can include fixed charges, taxes, slab tariffs and standby power, so your actual bill may differ slightly.
Enter the appliance power. Enter the hours used per day. Enter the number of days. Enter the cost per unit (kwh). Read off your total cost, together with units consumed (kwh) and cost per day — the calculator updates automatically, with no button to press.
Related guides
Electricity Bill Table: Total cost by Appliance power
Reference table of total cost for Electricity Bill across a range of appliance power values — exact, engine-computed figures you can read off at a glance.
How to Calculate Electricity Bill: Formula, Steps & Examples
Learn how to calculate Electricity Bill — the formula explained step by step, with worked examples and a free calculator to check your answer.