Practical calculator
Electricity & Appliance Cost Calculator
Estimate energy use for up to five appliance groups. Enter average power, number of devices, hours per day, days in the period and your flat energy tariff.
বাংলায় ব্যবহার নির্দেশনা
Appliance-এর watts, সংখ্যা ও দৈনিক ঘণ্টা দিন। এটি শুধু entered flat tariff-এর energy charge; পুরো electricity bill নয়।
Calculation result
Formula and calculation method
Energy (kWh) = watts ÷ 1,000 × device count × hours per day × days. Energy charge = total kWh × entered ₹/kWh.
Worked example
One 1,000 W appliance used for 2 hours daily over 30 days consumes 60 kWh. At ₹8/kWh, the estimated energy charge is ₹480. Two identical devices under the same usage consume 120 kWh and cost ₹960.
Assumptions and limitations
Use measured average power where available. Nameplate watts, cycling appliances and actual use can differ. Slab tariffs, fixed charges, subsidies, taxes, standby power and devices not entered are excluded. This is an energy-cost estimate, not a utility-bill calculator.
Your entries are used in your browser for this calculation. Entered values are not included in calculator analytics. CSV files are downloaded to your device; no account is required.
Frequently asked questions
Is the result my complete electricity bill?
No. It estimates the energy charge at a flat entered tariff and excludes other billing components.
Should I use the appliance label watts?
Use average measured draw if available. Rated or nameplate power may not reflect average consumption.
Sources and editorial check
Energy and electricity-cost method. Examples and method checked 15 October 2026. No independent professional review is claimed.