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Sigma Construction Calculator — 20 Free Professional Tools 2026

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🏗 Sigma Construction Calculator

20 professional construction calculators
22
Calculators
6
Categories
2026
Updated
∞
Free to Use
Quick access — click any calculator below:
🧱
Concrete Volume
Slab, beam, column, footing volume & materials
🏭
Cement Calculator
Bags of cement, sand & aggregate by mix ratio
🪵
Brick & Mortar
Bricks needed with mortar & wastage
⬛
Block Wall
CMU / hollow block wall calculation
⚙️
Rebar / Steel
Bar weight, quantity & cost estimation
🔲
Plaster
Cement & sand for plastering any area
🏠
Roofing
Flat, gable & hip — area, sheets & cost
🪜
Stairs Calculator
Risers, treads, stringer length
🏛
Columns & Beams
Structural element volume & steel
⚓
Footings
Strip, pad & raft foundation volumes
🪟
Flooring / Tiles
Tiles, cost, grout & wastage
🎨
Paint
Litres, coats & cans for any room
📄
Drywall
Sheets, screws & tape for rooms
🚧
Excavation
Volume, spoil & truck loads
🪨
Gravel & Sand
Weight, volume & cost of fill material
🛡
Retaining Wall
Block count & material estimation
📐
Area Calculator
6 shape types — circle, triangle & more
📦
Volume Calculator
Box, cylinder, cone, sphere & more
📏
Unit Converter
m², ft², yd², acres & more
💰
Project Cost
Full cost breakdown estimator
🪵
Lumber / Wood
Board feet & volume calculation
🔧
Pipe & Plumbing
Pipe volume, weight & cost

Concrete Volume Calculator

Calculate concrete volume and materials for any element type

Configuration

📊 Concrete Estimation Results
Formula: Dry Volume = Wet Volume × 1.54 | Cement = (1/Σparts) × DryVol × 1440 kg/m³

Cement Bag Calculator

Find exact cement bags, sand, and aggregate required for any concrete mix

📦 Cement Requirements

Brick & Mortar Calculator

Accurately estimate bricks, mortar, cement, and sand for any wall

🧱 Brick Estimation

Block Wall Calculator

Calculate CMU / hollow blocks for any wall

⬛ Block Wall Results

Rebar / Steel Calculator

Calculate steel reinforcement weight & cost

⚙️ Rebar Results
Formula: Weight/m = D² / 162.28 (D in mm) — Example: 12mm = 0.888 kg/m

Plaster & Render Calculator

Calculate cement and sand for plastering

🔲 Plaster Results

Roofing Calculator

Calculate roof area, sheets, and costs

🏠 Roofing Results

Stairs Calculator

Design stairs with proper riser & tread dimensions

🪜 Stair Design Results
Comfort Rule: 2R + T = 600–650mm | Stringer: √(Rise² + Run²)

Columns & Beams Calculator

Calculate concrete volume and steel for structural elements

🏛 Structural Results

Footing Calculator

Calculate concrete volume for foundations

⚓ Footing Results

Flooring / Tile Calculator

Calculate tiles, grout, and costs for any floor area

🪟 Tile Results

Paint Calculator

Calculate paint quantity for any room

🎨 Paint Results
Formula: Wall Area = 2(L+W)×H − Doors − Windows | Paint = Area × Coats / Spread Rate

Drywall Calculator

Calculate sheets, screws, and tape for any room

📄 Drywall Results

Excavation Calculator

Calculate excavation volume, loose soil, and truck loads

🚧 Excavation Results

Gravel & Sand Calculator

Calculate weight, volume, and cost of fill materials

🪨 Material Results

Retaining Wall Calculator

Calculate blocks and material for retaining walls

🛡 Retaining Wall Results

Area Calculator

Calculate area for 6 different shapes

📐 Area Result

Volume Calculator

Calculate volume for 5 different solid shapes

📦 Volume Result

Unit Converter

Convert between metric and imperial units

📏 Conversion Result

Project Cost Estimator

Estimate total construction cost by area and quality

💰 Cost Breakdown

Lumber / Wood Calculator

Calculate board feet, volume, and cost

🪵 Lumber Results
Board Feet: (Width″ × Thickness″ × Length′) / 12

Pipe & Plumbing Calculator

Calculate pipe volume, capacity, and cost

🔧 Pipe Results