Cement Calculator

Calculate cement, sand, and aggregate quantities for concrete slabs, footings, columns, beams, mortar, and plaster. Supports dry volume conversion (1.54 factor for concrete, 1.33 for mortar) and multiple shape inputs.

Choose from standard concrete grades: M5 (1:5:10), M7.5 (1:4:8), M10 (1:3:6), M15 (1:2:4), M20 (1:1.5:3), and M25 designed mix. Each grade automatically applies the correct cement, sand, and aggregate proportions per IS 456.

Get exact cement bag counts (50 kg bags), sand volume in cubic feet and cubic meters, coarse aggregate quantities, and water requirement in liters. Uses standard cement density of 1,440 kg/m³ and one bag = 0.0347 m³.

Add a customizable waste factor (2–10%) to account for spillage, over-excavation, and partial bags. Site practice adds 2–5% wastage for M20 concrete, and the app rounds up to whole bags for accurate ordering.

Get detailed cost projections for cement, sand, aggregate, and water. Adjust unit prices to match local market rates. Cement is typically 60–70% of concrete material cost, making accurate bag counts the biggest lever in tender estimation.

Work in feet, inches, yards, meters, and centimeters. Get results in cubic meters, cubic feet, cubic yards, kilograms, and bags. All calculations, material counts, and cost estimates update automatically. Fully functional offline.