How our calculators work
See how GharGanit checks inputs, shows formulas, handles rounding and explains when a result needs professional verification.
How a result is calculated
The calculation is kept separate from the page design. Inputs are checked, the working keeps full precision, and practical rounding is applied only to the result or buying quantity.
- Electricity is calculated in Wh or kWh.
- Battery estimates separate total energy, usable energy and delivered energy.
- Construction quantities start with measured area or volume.
- Land conversions use square feet as a clear bridge while keeping location and source context.
Rounding policy
Electricity commonly shows two decimals. Bricks and boxes round up for ordering. Cement shows the exact bag estimate and a purchase-rounded number. Regional land values avoid meaningless decimal places.
Source hierarchy
Government departments, regulators, BEE, official land-record documentation and recognised measurement standards are preferred. Competitor calculators are reviewed for product gaps, never treated as the sole technical authority.
Review and corrections
Core formulas and sources are reviewed when standards or source documents change. Send a correction with the calculator URL, value, location and supporting record; it will be investigated before any update.