Electricity Bill Calculator (India)
Estimate your monthly electricity bill from units consumed using slab rates.
Last updated: August 2026
Units (kWh) billed in the month.
Total bill
₹1,225
Energy charge
₹1,125
Fixed charge
₹100
Slab breakdown
| Units range | Rate (₹/unit) | Amount |
|---|---|---|
| 0–100 | ₹3.5 | ₹350 |
| 100–200 | ₹4.5 | ₹450 |
| 200–400 | ₹6.5 | ₹325 |
| 400+ | ₹8 | ₹0 |
Indicative slab rates (₹3.50–8.00/unit) similar to Delhi. Actual tariffs vary by state, connection type and season.
How it works
Slab billing: 0–100 @ ₹3.50, 100–200 @ ₹4.50, 200–400 @ ₹6.50, 400+ @ ₹8.00 per unit + fixed charge.
Example: 250 units → ₹1,300 energy charge + ₹100 fixed.
Frequently Asked Questions
How is the electricity bill calculated in India?
Bills use slab rates: cheaper per-unit rates for the first 100 units and progressively higher rates above that, plus a fixed monthly charge. This calculator uses typical Delhi-style slabs.
How many units does an Indian home use?
A small 1-BHK uses roughly 100–200 units monthly; a 3-BHK with AC can use 500–800 units in summer.
Why is my actual bill different from this estimate?
Tariffs vary by state, connection type, season and subsidies. Energy duty and fuel adjustment charges can also add 5–10%.
What is one unit of electricity?
One unit is one kilowatt-hour (kWh) — running a 1,000-watt appliance for one hour. A 1,500 W air conditioner for 8 hours uses 12 units a day.