Construction Calculators
Free calculators for site engineers, quantity surveyors and planners. Every result shows its formula and working, and most can be sent straight to the BOQ Builder.
Quantity calculators
Materials for each elementConcrete Volume
Slabs, footings, beams and columns, with cement bags, sand, aggregate and water by mix grade.
Open calculator →FreeRebar Weight
Bar schedule by diameter, length and count. Kilograms, tonnes and cost with lap allowance.
Open calculator →FreeBlockwork
Blocks per m² after openings, with mortar, cement bags and sand for 100–250 mm blocks.
Open calculator →FreePlaster
Cement and sand for internal plaster and external render by thickness and mix.
Open calculator →FreeTiles
Tiles and boxes to order, with adhesive bags and grout for any tile size.
Open calculator →FreePaint
Litres of primer and paint for walls and ceilings by coats and spreading rate.
Open calculator →FreeExcavation and Backfill
Bank and loose volume, backfill, surplus and truckloads for pits and trenches.
Open calculator →Project planning
Durations, progress and performanceUAE Working Days
Working days between dates or a finish date, with UAE holidays and site weekends.
Open calculator →FreeEarned Value
CPI, SPI, CV, SV, EAC, ETC, VAC and TCPI with a plain-language status.
Open calculator →Critical Path
Enter activities and links, get the critical path and a simple Gantt.
Cost, commercial and HR
Price the work and the teamBOQ Builder
Sections, items, rates, VAT and grand total. Paste straight into Excel.
Open calculator →FreeUAE Gratuity
End-of-service gratuity under the 2021 UAE Labour Law, with the working shown.
Open calculator →Cost per m²
Budget estimate for villas, apartments and warehouses.