Understand your units · Free calculator

Whole-home Electricity Consumption Calculator

Use this free calculator to estimate appliance-wise monthly units and energy charges. Enter your power use and electricity rate to see the units, cost and formula.

Updated 16 July 2026Use for planningFormula and steps shown
01

Enter your details

Your values

Private: the calculation runs in your browser. Your inputs are not sent to GharGanit.

Get a useful answer

How to use this calculator

  1. Use a real value. Check an appliance label, bill, site measurement, product sheet or official record.
  2. Replace the examples. Example values show how the tool works; they do not describe every home.
  3. Check the working. Open “How this was calculated” to see the formula, your values, losses and rounding.
  4. Verify before you act. Use the result for learning and early planning, then check the important decision where shown.
What can change the answer

Check these details

01

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

02

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

03

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

What it means

The total is a bottom-up estimate for the listed household loads, useful for finding which appliance group deserves closer measurement.

What to check next

Reconcile the calculated units with two or three actual bills and add seasonal or occasional loads that the starter list omits.

Common mistake

A whole-home estimate is incomplete when pumps, kitchen heating, standby loads or seasonal cooling are left out.

Common questions

Before you use the result

How is this whole-home electricity consumption calculator calculated?

Energy (kWh) = watts × quantity × hours × days × operating factor ÷ 1,000

What should I check first?

Reconcile the calculated units with two or three actual bills and add seasonal or occasional loads that the starter list omits.

What mistake should I avoid?

A whole-home estimate is incomplete when pumps, kitchen heating, standby loads or seasonal cooling are left out.

How accurate is this calculator?

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

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.