Construction Calculators
Free calculators for Indian home construction — slab reinforcement, column design, house construction cost, cutting length of stirrups and more.
House Construction Cost Calculator
Indian rates, 2026 · built-up area × rate × city · indicative
Footprint ≈ 780 sq ft at 65% ground coverage
Rate × 0.95 — labour and freight
RCC frame, vitrified tile, branded CP, standard paint — the common Indian house
Structure and finishes, ready to move in
Estimated cost
₹26.7 Lakh
Range ₹23.7 Lakh – ₹29.6 Lakh
Built-up area
1,560 sq ft
Rate
₹1,520–1,900/sq ft
Per floor
₹13.3 Lakh
G + 1
Scope
Complete house
Work-wise breakdown
Materials this budget must cover
Cement
624 bags
50 kg bags
Steel
6.2 t
Fe 500D, TMT
Bricks
12,480 nos
or equivalent blocks
Sand
2,808 cft
river or M-sand
Aggregate
2,106 cft
20 mm + 10 mm
Your inputs are in the address bar — bookmark the page to keep this estimate, or send the link and it opens with exactly these numbers. Nothing is uploaded.
This is an estimate, not a quote. It excludes land, approvals, boundary wall, water and power connections, consultant fees and furniture — together commonly another 8–15%, because none of them scale with built-up area. Hold 5–10% contingency on top. Get two or three real quotes against one drawing before you budget.
Steel & reinforcement
5Bar weights, BBS math and detailing rules for slabs, beams and columns.
Unit Weight of Steel Bar — 8mm, 10mm, 12mm, 16mm, 20mm, 25mm (Chart + Formula)
Unit weight of steel bars: 8mm = 0.395 kg/m, 10mm = 0.617 kg/m, 12mm = 0.888 kg/m, 16mm = 1.58 kg/m. Formula D²/162, full weight chart per metre and per 12 m bar, plus bars per bundle.
ReadSlab Reinforcement Calculator — Steel Quantity for RCC Slab
Calculate slab reinforcement steel: enter slab size, bar diameter and spacing to get bar count, cutting lengths and total steel weight. Typical 100-150mm home slabs use 80-90 kg steel per cum.
ReadCutting Length of Stirrups — Formula for Beam & Column (with Examples)
Cutting length of a rectangular stirrup = 2(a+b) + 2×10d hooks − 3×2d bend deductions. Step-by-step formula for rectangular, square, circular and diamond stirrups with worked examples.
ReadColumn Reinforcement Details — Bars, Stirrups, Lapping (IS 456)
Column reinforcement for houses: minimum 0.8% steel, 4-8 bars of 12-16mm, 8mm stirrups at 150mm c/c, 50d lap length, 40mm cover. Complete detailing rules per IS 456 and IS 13920.
ReadReinforcement Details for Column, Beams and Slab (IS 456 Summary)
Complete reinforcement details: columns 0.8-6% steel with 8mm ties, beams min 0.2% tension steel with stirrups, slabs 0.12% both ways. Cover, laps, development length — all IS 456 rules in one table.
Read
Structural sizing
1Working out member sizes from loads.
Cost estimation
1Budget calculators for whole houses and single elements.