CivilCalc Tools

CivilCalc Tools

Tools About

Free Civil Engineering Calculators

Quick tools for civil engineers, site engineers, contractors, students and construction professionals. Calculate common quantities directly in your browser.

Engineering Tools

Select a calculator to start.

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Unit Converter

Convert length, area, volume, mass, pressure, force, density and flow rate.

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Concrete Volume

Calculate concrete quantity for slabs, beams, columns and rectangular members.

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Steel Weight

Calculate reinforcement bar weight from diameter and length.

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Brick Calculator

Estimate number of bricks required for a wall.

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Area Calculator

Calculate rectangular or square area from dimensions.

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Excavation Volume

Calculate basic excavation or trench volume.

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Plaster Quantity

Estimate wet mortar volume and dry material volume for plastering.

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Pressure Converter

Convert Pa, kPa, MPa, N/mm², bar, psi and kg/cm².

Unit Converter

Category LengthAreaVolume MassPressure / StressForce DensityFlow Rate

Value

From

To

Result will appear here.

Concrete Volume Calculator

Length (m)

Width (m)

Depth / Height (m)

Enter dimensions.

Volume = Length × Width × Depth. Add a practical site allowance separately according to your project specification.

Rebar Steel Weight Calculator

Bar Diameter (mm)

Total Length (m)

Enter diameter and length.

Common theoretical formula: weight per metre ≈ d² / 162 kg/m, where d is bar diameter in mm.

Brick Quantity Calculator

Wall Length (m)

Wall Height (m)

Brick Length (mm)

Brick Width (mm)

Brick Height (mm)

Mortar Joint (mm)

Enter wall and brick dimensions.

This is an estimate based on the brick-plus-mortar module. Actual wastage, openings and site conditions should be considered.

Area Calculator

Length (m)

Width (m)

Enter dimensions.

Excavation / Trench Volume

Length (m)

Width (m)

Depth (m)

Enter excavation dimensions.

Plaster Quantity Calculator

Wall Area (m²)

Plaster Thickness (mm)

Dry Volume Factor

Enter plaster details.

Wet mortar volume = area × thickness. Dry material volume is estimated using the selected factor. Mix ratios and material quantities require project-specific specifications.

About CivilCalc Tools

A lightweight browser-based toolkit for everyday civil engineering and construction calculations. Results are estimates for planning and should be checked against project drawings, specifications and applicable standards before construction.

CivilCalc Tools

Free Civil Engineering Calculators & Unit Converters