Electricity Bill Calculator (Bijli Bill) – Units & Slab Rates

Estimate your monthly electricity units from appliances and calculate the bill using your own slab rates, fixed charge and duty.

Working this out manually takes time and invites small mistakes. Electricity Bill Calculator takes mahine ke din, total units, fixed, and fuel and gives an instant result you can recalculate with different values.

1) Units kitne lagenge? (appliance se andaaza)

2) Apne bijli board ke rate (bill se dekh kar bharein)

Neeche ke rate sirf namuna hain. Har rajya/DISCOM ke rate alag hote hain — apne bijli bill ya board ki website se asli rate daalein.

How to Use the Electricity Bill Calculator

Add your appliances with watts, quantity and daily hours to estimate monthly units, or type the units directly. Then enter the slab rates from your bill and click Calculate Bill.

How are electricity units calculated?

Units (kWh) = watts × hours per day × days ÷ 1000. For example, a 1,000 W heater used for 2 hours a day for 30 days uses 60 units.

Why are the default rates only examples?

Tariffs are different in every state and electricity company and change over time. Enter the rates printed on your own bill for a correct estimate.

Why is my real bill different?

Real bills can include load-based fixed charges, subsidies, arrears or late fees, which this estimate does not include.

About this calculator

Estimate your monthly electricity units from appliances and calculate the bill using your own slab rates, fixed charge and duty. Electricity Bill Calculator makes it easy to compare two or three scenarios side by side, needs no formulas or spreadsheet setup, and replaces manual arithmetic with an instant, repeatable answer.

How to use it

Enter mahine ke din, total units, and fixed, then adjust the options so they match what you need, then click “Calculate Bill”, and finally read the result and try other numbers to compare.

Worked scenario

A quote arrives from a supplier and Electricity Bill Calculator helps you check whether the figures add up.

Things to keep in mind

The answer is only as good as the numbers you enter, so double-check units and decimals. Use the result as a guide and confirm important figures with an official or professional source.

Electricity Bill Calculator works inside your browser, so what you type or select here is not sent to our server for processing.

You might also try Electricity Bill Calculator by Appliance, Motor HP to kW & Electricity Cost Calculator, and Tip Calculator.

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Last updated: 08 Nov 2026 • 100% free • Mobile friendly

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