Formula transparency
Every result includes the real formula and your values substituted into it.
Smart calculations for Indian homesPlan the home.
Plan the home.
See the working.
Power, materials and land calculations with clear formulas, transparent assumptions and practical explanations.
No sign-upNo API keysCalculations stay in your browser
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monthly energy216 kWh assumptions shown
घर
गणित
Start with a question
What are you planning?
01
Electricity
Estimate appliance and whole-home energy use with editable tariffs and visible operating assumptions.
Explore electricity →02Backup & Solar
Connect load, surge, VA, battery losses and solar assumptions without hiding the physics.
Explore backup & solar →03Construction
Plan material quantities from dimensions, mix assumptions and waste allowances—never as structural design.
Explore construction →04Land Units
Convert standard and regional Indian land units while keeping the state, factor, source and uncertainty visible.
Explore land units →Popular calculators
See all 47 tools →Useful answers, without the black box
01
Electricity
Calculate →02AC Electricity Bill Calculator
air-conditioner energy use without confusing cooling tonnage with input watts
Backup & Solar
Calculate →03Battery Backup Time Calculator
battery runtime with depth-of-discharge and inverter losses
Backup & Solar
Calculate →04Inverter Size Calculator
an inverter VA range from watts, surge, power factor and margin
Construction
Calculate →05Brick Wall Calculator
brick count and mortar volume after subtracting openings
Construction
Calculate →06Paint Calculator
room wall and optional ceiling paint volume
Construction
Calculate →07Tile Calculator
tile count, box count and spares after wastage
Land Units
Calculate →08Katha to Square Feet Calculator
Katha, Cottah or Kattha to square feet
Electricity
Calculate →Whole-home Electricity Consumption Calculator
appliance-wise monthly units and energy charges
Guided workflows
A number is only the middle of the decision
Move from a rough question to an explained, printable planning result.
01
Choose the right tool
Start broad, then open the specialist calculator for the largest uncertainty.
02
Replace the examples
Use your label, bill, measurement, product sheet or land record.
03
Inspect the formula
See the unit conversion, losses, factor and rounding used.
04
Verify, then act
Print assumptions and take them to the relevant professional or supplier.
Trust is a product feature
We show what other calculators tend to hide.
GharGanit is independent, practical and deliberately careful about the boundary between a planning estimate and a professional decision.
Read our calculation methodology →Editable assumptions
Tariffs, losses, coverage, wastage and local factors never pretend to be universal.
Regional context
Land units require a state, a source and a visible uncertainty note.
Verification prompts
Safety, structure and legal measurements are clearly routed to qualified professionals.
Measure twice. Understand once.
Bring your next home question.
No account. No product pitch. Just the calculation and the context around it.
Find a calculator →47working tools