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AC Electricity Bill Calculator

This calculator works out air-conditioner energy use without confusing cooling tonnage with input watts. The result converts electrical input and an average load factor into energy; AC tonnage is not used as a substitute for input watts. Replace the example values with information from your own label, bill, drawing, product sheet or land record. Prefer the model's rated input or BEE annual-energy data and adjust the load factor after observing room temperature, cycling and usage. The formula and every editable assumption remain visible so the result can be checked before it is used for planning. Keep the values and result together when you compare or share this planning scenario.

Updated 17 July 2026Use for planningFormula and steps shown

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Your values

Every input includes a simple explanation.

Simple wordsFormula shownPrivate inputs

Simple estimateApproximate result using model input power; load factor stays visible in advanced assumptions.

Rated electrical inputManufacturer-specific value — example shownThe electrical input power printed on this AC model’s label or product sheet—not its cooling tonnage.

Daily AC useUser-entered value — example shownHow many hours the AC runs on a typical day.

hours

Days used per monthUser-entered value — example shownHow many days during the month you normally use the AC.

days

Electricity rateUser-entered value — example shownThe price of one electricity unit from your own bill.

₹/kWh

Helpful tip: Enter the energy rate from your bill. ₹8 is only an example you can change.

Private: calculations run in your browser. Saved scenarios, preferred electricity rate and land state stay on this device.

Your result

Estimated monthly energy cost

₹1,728.00

One electricity unit is one kilowatt-hour (kWh). Check the appliance label for a better wattage or annual-consumption input.

Monthly energy216 kWh

Daily energy7.2 kWh

Annual energy2,592 kWh

Annual energy cost₹20,736.00

How this was calculated

Formula used

Energy (kWh) = input watts × hours per day × days used × load factor ÷ 1,000

Your values in the formula

1,500 W × 8 h/day × 30 days × 0.6 load factor ÷ 1,000 = 216 kWh

Assumptions and rounding

₹8/kWh is an editable example, not a national tariff.
Slabs, fuel adjustments, duties and taxes may change the bill.
Rated power can be different from average power while the appliance is running.

Use this as a budget estimate. The appliance label, how often it runs and all charges on your tariff determine the real bill.

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How to use this calculator

Step 1. Read the appliance label or product sheet for watts, then enter how long it runs.
Step 2. Use the rate or bill details that apply to your own connection; an example is not a tariff.
Step 3. Compare the result with a real bill and check non-energy charges separately.

What can change the answer

Check these details

Rated power can be different from average power while the appliance is running.

Voltage, automatic on-off cycling and equipment condition can change real use.

Use this as a budget estimate. The appliance label, how often it runs and all charges on your tariff determine the real bill.

Understand your result

What this answer means

Read the meaning first, verify the important details, then avoid the most common planning error.

What it means

The result converts electrical input and an average load factor into energy; AC tonnage is not used as a substitute for input watts.

What to check next

Prefer the model's rated input or BEE annual-energy data and adjust the load factor after observing room temperature, cycling and usage.

Common mistake

Multiplying 1.5 ton by a guessed watts-per-ton value can badly misstate inverter AC consumption.

Sources and method

Sources used for this calculator

Standards & Labelling ProgrammeBureau of Energy Efficiency, Government of IndiaUsed to explain why the model label is the preferred source for appliance energy information. No star-rating consumption figures are invented. Reviewed 2026-07-16.Documented dimensional-analysis formulasGharGanit editorial methodologyFormulas are derived from units and expose every editable efficiency, density, dry-volume and wastage assumption. Reviewed 2026-07-16.

Official verification links

Check the official context

These independent government and standards resources help you verify the inputs or decision. Inclusion is not an endorsement.

BEE Standards & Labelling programmeBureau of Energy Efficiency, Government of IndiaUnderstand appliance star labels and the energy information shown on them.Open official resource BEE appliance check-testing processBureau of Energy Efficiency, Government of IndiaSee how registered appliance performance claims are checked for compliance.Open official resource BEE star-label QR and mobile toolsBureau of Energy Efficiency, Government of IndiaVerify model information from the label database instead of guessing from star count.Open official resource

Browse all 72 verified links

Learn before deciding

Useful next reading

Read the electricity bill guide Understand bill charges Check a worked AC example Read a BEE AC label Compare AC tonnage and input watts Compare inverter and fixed-speed ACs

Calculator revision

Version 1.2

Updated 17 July 2026. Changes listed here describe this calculator release; they are not invented historical entries.

Rewrote AC-specific input explanations.
Matched the displayed formula to the visible AC fields.
Moved load factor into the advanced-assumptions view.
Kept BEE and model-label values as the preferred evidence.

Read the correction process