Construction & Real Estate — Free Online Tools

Material, area, cost and measurement calculators for builders.

15 free tools — all running privately in your browser

FSI / FAR Calculator

Calculate max built-up area from plot size and FSI/FAR — India municipal DCR estimate with sq ft and sq m.

Convert carpet, built-up and super built-up area using RERA loading factors — editable percentages for Indian apartments.

Convert architectural drawing dimensions to real-world measurements at 1:50, 1:100, 1:200 and other standard scales.

Calculate total floor area from multiple rooms — sq ft and sq m with room-wise breakdown for architects and interior designers.

Calculate stair steps from floor height, riser and tread — NBC India comfort check with Blondel formula (2R + T).

Convert SVG drawings to PDF — choose A4, A3 or A1 paper, fit or custom scale, download print-ready PDF in your browser.

Extract vector lines from PDF to DXF — AutoCAD R12/R2010/R2018/R2024. Best for line drawings; not a substitute for AutoCAD.

Calculate concrete volume m³, cement bags (50 kg), sand and aggregate for 1:2:4 and 1:1.5:3 mixes — Indian site estimate.

Estimate brick count and mortar for Indian walls — modular or traditional brick, 115/230/345 mm thickness.

Mortar quantity from area × thickness — cement bags and sand (ft³) for 1:4 and 1:6 ratios.

Plaster cement and sand for 12 mm or 15 mm thickness — wall/ceiling area in sq ft or sq m, 1:4 mix.

TMT bar weight calculator — dia 8–32 mm, length and nos to total kg using IS formula D²/162.

Floor and wall tiles needed — room area, tile size in cm, 5–10% wastage, boxes estimate.

Earthwork volume for trench or pit — L×W×D to m³ and ft³, tipper trip estimate.

Quick cement bag estimate for small works — enter volume m³, pick mix ratio, get 50 kg bag count.