Appliance Electricity Cost Calculator

What does the appliance electricity cost calculator do?

Every electrical appliance in your home is a small meter running on its own — the geyser counts up while you bathe, the fridge ticks all night, the TV adds a little with every serial, and the iron adds a burst on Monday mornings. This calculator answers one deceptively simple question: how many rupees does a single appliance cost you per month? Enter its wattage, how many hours a day it runs, how many days in a month, and your electricity rate — and it returns the exact units consumed and the exact cost.

What makes this tool powerful is that it works for anything. A branded appliance list is built in (geyser, heater, AC, iron, microwave, washing machine, fridge, fan, TV, LED bulb and more), but there is also a custom mode where you type in the wattage printed on any device — even an odd one like a treadmill or a massage chair. Once you know the true cost of each device, you can see exactly where your bill leaks.

The one formula behind every estimate

The maths could not be simpler — it is the same calculation inscribed on your electricity meter:

• Watts → kilowatts: 1,000 watts = 1 kW
• Units used = kW × hours/day × days in the month
• Cost = units × your rate (₹ per unit)

So a 2,000-watt geyser running 1 hour a day is 2 kW × 30 hours = 60 units a month. At ₹7/unit that is ₹420. A 55-watt TV running 5 hours is just 8.25 units (~₹58). The bigger the wattage and the longer the run, the faster the cost multiplies — which is why one 2,000W device can outweigh ten 100W ones.

Typical wattage of common home appliances

Here are realistic wattages for the appliances common in Indian homes. Actual numbers vary by brand and model, so check the label on yours:

Why your bill is far more than all appliances added

If you add up every appliance above, you get a few hundred units — yet the bill shows double or triple. That happens because of three things this tool deliberately isolates:

• Hidden devices — water pumps, geysers with old thermostats, leaky fridges, two TVs running simultaneously
• Power that remains — devices on standby still draw power (see below)
• Non-unit charges — fixed charges, energy duty, FAC and slab rates are on top of the units

The hidden cost: standby and phantom power

Most modern electronics never fully switch off. A TV on standby, a set-top box, a router, a microwave with a clock, a washing machine with a display — each draws 5–15 watts quietly, 24 hours a day. Ten such devices average ~100 watts around the clock: that is 72 units a month, or over ₹500/year at ₹7/unit, spent for absolutely nothing. Switch off at the socket, or use a power strip with a single switch, and this dies instantly.

How to read the wattage label on any appliance

Almost every appliance carries its draw on a sticker or embossed plate — look for "W" or "Watts" on the back of the TV, the base of the iron, the side of the fridge and the rear of the AC. Bright appliances list it as "Input power". If only amps and volts are shown, multiply them: watts = volts × amps. For star-rated devices like fridges and ACs, the label shows the annual units directly, which is even more useful than the wattage.

Small habits that shrink the appliance bill

• Switch off — don't leave in standby — TVs, decoders, microwaves and computers
• Heat smaller volumes — a kettle for one cup beats a full immersion rod
• Run the washing machine on cold and full loads only
• Defrost the fridge; a thick ice layer makes the compressor run longer
• Clean the iron and dryer coils — residue adds running minutes

Appliance cost calculator FAQs