Construction calculators
Construction cost, cement, sand, aggregate, bricks and steel.
Construction 5 tools
House construction cost calculator (basic, standard, premium)
Estimate the cost to build a house on your plot: built-up area from plot size, floors and coverage, cost per sq ft by fi…
Concrete material calculator: cement bags, sand and aggregate
Cement bags, sand and coarse aggregate needed for a given volume of M15, M20 or M25 concrete, with the dry-volume factor…
Brick calculator for walls (with mortar cement and sand)
Number of bricks for a wall of given length, height and thickness (4.5 or 9 inch), minus openings, with mortar cement ba…
Boundary wall and fencing cost calculator
Cost and materials for a plot boundary wall from plot dimensions: running length, brick or block count, RCC pillars, fou…
Water storage and septic tank sizing calculator
Size an overhead or underground water tank and a septic tank for a house from the number of residents: litres per day, d…
Why these calculators are different
- India-first rules: stamp duty per state with women-buyer concessions, bigha and biswa by region, GST on under-construction homes, section 194-IA TDS, post-2024 capital gains.
- Exact where others approximate: irregular plots use a diagonal and Heron\'s formula, not the average-of-sides shortcut.
- Every page shows its working: formula, assumptions, a worked example and the official source to verify against.
- Open API: every calculator answers at
/api/calc/{slug}?…as JSON, free to use with attribution.
Estimates for planning only; not financial, legal or tax advice.