Kilowatt to Unit Converter (Electricity)
Enter your appliance load in kW and daily usage hours — get electricity units consumed and an estimated bill in rupees.
Electricity units consumed
Estimated bill
How to use this converter
- Enter the appliance load in kilowatts (check the label — a 1.5-ton AC is about 1.5 kW).
- Enter hours per day it runs and the number of days.
- Enter your state's per-unit rate (often ₹6–₹9 for homes).
- See units consumed and the estimated bill instantly.
The formula
One "unit" of electricity = 1 kWh (one kilowatt running for one hour). So units = kW × hours × days, and bill = units × rate per unit. Example: a 1.5 kW AC × 4 hours × 30 days = 180 units → at ₹7/unit ≈ ₹1,260.
Quick reference table
| Appliance | Typical load | Note |
|---|---|---|
| 1.5-ton AC | 1.5 kW | Biggest home load |
| Geyser | 2 kW | Short bursts |
| Refrigerator | 0.15 kW | Runs all day |
| Ceiling fan | 0.075 kW | 75 watts |
| LED bulb | 0.009 kW | 9 watts |
What this estimate leaves out
Real Indian electricity bills add fixed charges, slab-wise rates (first 100 units cheaper, later units costlier), fuel surcharges and taxes. This tool gives the energy-charge part — your actual bill will be a bit higher. Still, it is perfect for answering "how much does running the AC 4 hours a day cost me?"
Frequently asked questions
How many units does a 1.5 kW AC use in a month?
At 4 hours/day for 30 days: 1.5 × 4 × 30 = 180 units.
What is 1 unit of electricity?
1 unit = 1 kWh = running a 1 kW appliance for one hour.
How is the electricity bill calculated in India?
Units consumed × per-unit rate, plus fixed charges and taxes. Rates are slab-wise and differ by state.
What is the formula for kW to units?
Units = kilowatts × hours × days.