Electricity Bill Estimator

Units (kWh) and bill from your appliances, hours and tariff. Results update as you type.

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Enter your details

Appliances *One per line: name, watts, hours used per day, quantity (optional). Refrigerators cycle on and off, so enter about 8 hours.Days in the billBlank = 30 days.Tariff per unit (kWh) *₹If your bill uses slabs, divide the energy charge by the units used.Fixed charge per bill (optional)₹Duty / tax on the bill (optional)%

Currency

Results

Fill in the details above and the results appear here.

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About the Electricity Bill Estimator

Estimate your electricity use and bill from the appliances you run. List each one with its power in watts, the hours used per day and the quantity, add your tariff per unit, and see the units (kWh), the bill and which appliance costs the most.

You can include a fixed charge and a percentage duty or tax.

Choose your currency (₹, $, €, £ and more) and every amount updates. The calculation runs in your browser, so the numbers you enter are not uploaded.

Electricity Bill Estimator example

Input

Appliances: Ceiling fan, 75, 10, 3; Air conditioner 1.5 ton, 1500, 6; Refrigerator, 150, 8; LED bulb, 9, 6, 6; TV, 100, 4; Washing machine, 500, 0.5
Days in the bill: 30
Tariff per unit: 7
Fixed charge per bill: 120
Duty / tax on the bill: 5 %

Output

Estimated bill: ₹3,085.99
Units used: 402.7 kWh
Energy charge: ₹2,819.04
Fixed charge: ₹120
Duty / tax: ₹146.95
Cost per day: ₹102.87

How it is calculated

Each appliance’s daily energy is watts × quantity × hours ÷ 1,000 (kilowatt-hours). That is multiplied by the number of days to get units used, then by your tariff. Fixed charge is added, then the duty or tax percentage.

kWh per day = watts × quantity × hours per day ÷ 1000
Units used = kWh per day × days
Bill = (units × tariff + fixed charge) × (1 + tax ÷ 100)

What to enter

Appliances. One per line: name, watts, hours used per day, quantity (optional). Refrigerators cycle on and off, so enter about 8 hours.
Days in the bill. Blank = 30 days.
Tariff per unit. If your bill uses slabs, divide the energy charge by the units used.

Assumptions and limits

Tariffs change, so enter the rate from your latest bill. Standby power and voltage variation are not modelled.

How to use the Electricity Bill Estimator

Fill in the fields above. Required fields are marked, optional ones can be left blank and fall back to the defaults described on this page.
Use “Try an example” to see a worked case, then replace the numbers with your own.
Read the results as you type. The large card is the main answer and the smaller cards are the related figures.
Copy a single value or everything, or share a link that keeps your inputs.

Electricity Bill Estimator FAQ

How does the electricity bill estimator work?

Where do I find an appliance’s watts?

On the rating label or in the manual. If only amps are given, watts are roughly volts × amps. Air conditioners and refrigerators cycle on and off, so enter the typical hours they actually run.

My bill uses slab rates. What tariff do I enter?

Divide the energy charge on a past bill by the units used to get your average rate per unit, then enter that. Slab tariffs change by state and provider, so the result is an estimate.

Is this electricity bill estimator free and private?

Yes. It is free with no sign-up, and the calculation happens on your device, so your numbers are never sent to a server.

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