Construction Calculators
Calculate cement, steel, bricks, paint, and more. Get accurate material quantity estimates for your construction projects instantly.
Quick Reference Tables
Common construction calculations at a glance
Cement Coverage
- •1 bag cement (50kg) = 0.035 m³
- •Plastering 12mm: ~0.8 bag/m²
- •Flooring 25mm: ~0.4 bag/m²
- •Brickwork: ~0.6 bag/m²
Steel Unit Weights
- •8mm TMT = 0.395 kg/m
- •10mm TMT = 0.617 kg/m
- •12mm TMT = 0.888 kg/m
- •16mm TMT = 1.580 kg/m
Brick Quantities
- •Half brick wall = 55 bricks/m²
- •Full brick wall = 110 bricks/m²
- •Standard brick = 500 per m³
- •Modular brick = 422 per m³
Paint Coverage
- •Interior paint: 100-120 sq.ft/L
- •Exterior paint: 80-100 sq.ft/L
- •Primer: 100-110 sq.ft/L
- •Putty: 20-25 sq.ft/kg
Available Calculators
Select a calculator to estimate material quantities for your project
Cement Quantity Calculator
Calculate the number of cement bags required for various construction activities including concrete, plastering, flooring, and brickwork based on area, thickness, and mix ratio.
Features:
- • Concrete work calculation
- • Plastering quantity
More:
- • Flooring requirements
- • Different mix ratios (1:2:4, 1:1.5:3, etc.)
Formula:
Cement = (Volume x Cement Ratio) / (Sum of Ratios) x 1.54
Example: For 10 m³ of M20 concrete (1:1.5:3), you need approximately 88 bags of cement.
Steel Weight Calculator
Calculate the weight of TMT bars, structural steel, and reinforcement. Supports all standard diameters from 6mm to 32mm with automatic rate calculation.
Features:
- • TMT bar weight by diameter
- • Total weight for given length
More:
- • Unit weight reference table
- • Cost estimation with rates
Formula:
Weight (kg/m) = (Diameter in mm)² / 162
Example: A 12mm TMT bar weighing 0.888 kg/m, for 100m length = 88.8 kg
Brick Quantity Calculator
Calculate the number of bricks required for wall construction. Supports different brick sizes, wall thicknesses, and accounts for mortar joints.
Features:
- • Standard brick (230x115x75mm)
- • Modular brick (190x90x90mm)
More:
- • Half brick and full brick walls
- • Mortar quantity estimation
Formula:
Bricks = Wall Area / (Brick Area x 1.1 for wastage)
Example: For a 10m x 3m half-brick wall, you need approximately 1,500 bricks.
Paint Quantity Calculator
Estimate paint quantity for interior and exterior walls. Accounts for primer, number of coats, and different surface types.
Features:
- • Interior and exterior paint
- • Primer calculation
More:
- • Multiple coat coverage
- • Rough/smooth surface factor
Formula:
Paint (Litres) = (Wall Area / Coverage per Litre) x Number of Coats
Example: For 100 sq.m wall with 2 coats, you need approximately 10 litres of interior paint.
Concrete Volume Calculator
Calculate concrete volume required for slabs, beams, columns, and footings. Includes material breakdown for different mix designs.
Features:
- • Slab concrete volume
- • Beam and column calculation
More:
- • Footing volume
- • Material breakdown (cement, sand, aggregate)
Formula:
Volume = Length x Width x Depth
Example: A 100 sq.m slab of 150mm thickness needs 15 cubic meters of concrete.
Plastering Calculator
Calculate cement and sand quantities for plastering work. Supports different plaster thicknesses and mix ratios.
Features:
- • 12mm and 20mm plaster thickness
- • Different mix ratios (1:3, 1:4, 1:6)
More:
- • Interior and exterior plastering
- • Material quantity with wastage
Formula:
Volume = Area x Thickness x 1.3 (for wastage)
Example: For 100 sq.m of 12mm thick plastering (1:4 ratio), you need 8 bags of cement and 0.8 m³ sand.
Tile Quantity Calculator
Calculate the number of tiles required for flooring and wall tiling. Accounts for wastage and different tile sizes.
Features:
- • Multiple tile sizes
- • Wastage percentage
More:
- • Adhesive quantity
- • Grout requirement
Formula:
Tiles = (Area / Tile Area) x 1.1 for wastage
Example: For 50 sq.m floor with 600x600mm tiles, you need approximately 154 tiles.
Reorder Level Calculator
Calculate when to reorder materials based on lead time, daily consumption, and safety stock. Prevent stockouts and production delays.
Features:
- • Lead time consideration
- • Daily consumption rate
More:
- • Safety stock calculation
- • Economic order quantity
Formula:
Reorder Level = (Lead Time x Daily Consumption) + Safety Stock
Example: With 5-day lead time, 10 bags/day consumption, and 20 bags safety stock, reorder at 70 bags.
How These Calculators Help
Accurate material estimation saves money and prevents project delays
Prevent Over-ordering
Accurate calculations mean you order exactly what you need. No excess materials sitting idle on site eating into your budget.
Avoid Stockouts
Know exactly when materials will run out with reorder level calculations. Keep your project on schedule without interruptions.
Budget Accurately
With precise material quantities, you can create accurate project budgets and avoid cost overruns.
Standard Construction Formulas
Reference formulas used in material calculations
Concrete Mix (M20 - 1:1.5:3)
1 m³ = 8.22 bags cement + 0.42 m³ sand + 0.83 m³ aggregateConcrete Mix (M25 - 1:1:2)
1 m³ = 9.86 bags cement + 0.35 m³ sand + 0.69 m³ aggregatePlastering (1:4 ratio, 12mm thick)
10 m² = 0.8 bags cement + 0.08 m³ sandBrick Wall (Half brick wall)
10 m² = 550 bricks + 3 bags cement + 0.3 m³ sandFloor Tile Adhesive
10 m² = 30-40 kg adhesive (3-4mm bed thickness)Steel Reinforcement
Weight (kg/m) = d² / 162 (where d = diameter in mm)Automate Material Calculations with SiteSetu
While these calculators help with individual estimates, SiteSetu helps you track materials, indents, and stock levels in one place so estimates translate into action.
About Our Construction Material Calculators
Accurate material quantity estimation is crucial for construction project success. Over-ordering ties up capital in excess inventory, while under-ordering causes project delays. Our free construction calculators help you estimate the right quantities for cement, steel, bricks, paint, and other materials.
The cement calculator helps you determine the number of cement bags required for different activities like concrete work, plastering, and flooring. It accounts for different mix ratios commonly used in Indian construction.
Our steel weight calculator provides quick calculations for TMT bars of all standard diameters. Knowing the weight per meter helps in both procurement planning and cost estimation.
The brick calculator accounts for different brick sizes (standard and modular) and wall thicknesses. It includes wastage factors based on typical site conditions.
For finishing work, the paint calculator and tile calculatorhelp estimate quantities based on surface area, coverage rates, and the number of coats required.
The reorder level calculator is particularly useful for site stores. It helps you determine when to raise purchase orders based on lead time and daily consumption rates, preventing both stockouts and over-stocking.