Free tool
Electricity Cost Calculator for AC, Air Cooler, Fridge & More
What will this appliance add to your bill?
Pick an appliance for typical figures, then change any number to match your own model and usage.
Per month (in use)
₹2,112
264 units
Per year
₹10,560
1320 units
Over 10 years
₹1,05,600
at today's tariff
Assumptions: units = watts × hours × days ÷ 1,000 (or the BEE label figure for a fridge), costed at your tariff. Preset wattages are typical averages, not measurements — an inverter AC draws less once the room reaches the set temperature, so use your model's rated figure for a closer answer.
| Appliance | Typical draw | Use a day | Cost a month |
|---|---|---|---|
| 1 ton inverter AC | ~750 W | 8 h | ₹1,440 |
| 1.5 ton inverter AC | ~1,100 W | 8 h | ₹2,112 |
| 2 ton inverter AC | ~1,500 W | 8 h | ₹2,880 |
| Desert air cooler | ~190 W | 10 h | ₹456 |
| Personal air cooler | ~110 W | 10 h | ₹264 |
| Refrigerator (250 units/yr label) | — | 24 h | ₹167 |
| Air purifier | ~40 W | 12 h | ₹115 |
| BLDC ceiling fan | 28 W | 12 h | ₹81 |
Frequently asked questions
How much electricity does a 1.5 ton AC use?
A 1.5 ton inverter AC typically averages around 1,000-1,200 W once the room is cool, so about 8-9 units in an 8-hour night — roughly ₹2,100 a month at ₹8 a unit. A 5-star model uses less than a 3-star one of the same tonnage; check the ISEER and annual units on its BEE label.
How much electricity does an air cooler use?
Most desert coolers draw 150-250 W and personal coolers 80-130 W. At 10 hours a day, a 190 W cooler uses about 57 units a month, or around ₹456 at ₹8 a unit — roughly a fifth of what a 1.5 ton AC costs to run.
How many units does a refrigerator use per month?
Read the annual units on the BEE star label and divide by 12. A label showing 250 units a year means about 21 units a month, roughly ₹167 at ₹8 a unit. Larger and lower-star fridges use more.
Is an air cooler cheaper to run than an AC?
Yes, by about five times. But an air cooler only works well in dry heat; in humid coastal cities it adds moisture and cools far less, so the cheaper running cost does not help if it cannot cool the room.
How do I calculate electricity cost for any appliance?
Multiply watts by hours of use, divide by 1,000 to get units (kWh), then multiply by your tariff per unit. Example: a 190 W cooler for 10 hours is 1.9 units, or ₹15.20 a day at ₹8.