Electricity Bill Calculator India
Calculate your monthly electricity bill based on unit consumption and state tariff. Check appliance-wise usage.
Appliance-wise Calculator
About this calculator
Add your appliances with watts and hours and get units used, cost per appliance and your total bill with fixed charges.
How to use it
- List each appliance with its watts, hours per day and days.
- Set the rate per unit.
- Press Calculate and read the units and bill.
The formula
Units (kWh) = watts × hours per day × days ÷ 1000. A 1,500 W AC running 8 hours for 30 days uses 1500 × 8 × 30 ÷ 1000 = 360 units. Bill = units × rate + fixed charges (plus taxes and duty in your state). Real tariffs are in slabs: the first units cost less, and higher slabs cost more, so a flat average is only an estimate. Check your state electricity board's tariff order for exact slabs.
Worked example
Monthly estimate at ₹6.50 per unit
| AC 1.5 ton, 8 h/day | 360 units = ₹2,340 |
| Refrigerator, 24 h/day at 150 W | 108 units = ₹702 |
| LED TV 60 W, 5 h/day | 9 units = ₹58.50 |
| Total | 477 units = ₹3,100.50 + ₹100 fixed = ₹3,200.50 |
Calculated in your browser. Nothing is uploaded.
Tips and common mistakes
- Inverter ACs and 5-star appliances use much less power.
- Set the AC to 24 to 26°C; each degree lower adds roughly 6% to usage.
- Switch to LED: a 9 W LED replaces a 60 W bulb.
- Refrigerator duty cycle is lower than 24 h; use 150 W × 24 only as an upper bound.
- Standby loads (TV, set-top box, chargers) can add up to 5 to 10%.
Frequently asked questions
How are electricity units calculated?
One unit is one kilowatt-hour: 1000 watts used for one hour.
How do I calculate my bill?
Total units × tariff + fixed charges + taxes.
Why does my actual bill differ?
Slab rates, fuel surcharge, taxes and meter readings.
How many units does an AC use?
A 1.5 ton AC uses about 1.2 to 1.5 units per hour.
How can I reduce my bill?
Use efficient appliances and AC at 24 to 26°C.
Is it free?
Yes.