Construction Calculators – Materials, Foundations, Engineering & Finishing

Calculate how many bricks you need for a wall based on dimensions, brick size, mortar joint thickness, openings, and waste margin.

Calculate recommended electrical cable size based on power, voltage, and phase. Simple cable cross-section estimation tool.

Calculate the amount of cement needed for concrete based on volume and mix ratio. Estimate cement bags and weight easily.

Calculate cement, sand, and gravel quantities based on concrete mix ratios. Estimate materials for any concrete volume.

Calculate concrete volume for slabs, footings, and columns. Get accurate concrete estimates for construction projects.

Calculate total electrical load by summing appliance power. Estimate home or workshop electricity demand easily.

Calculate foundation concrete volume for slab, strip, pad footings, and piles. Includes unit conversion and waste margin.

Calculate the amount of gravel needed for concrete, driveways, or base layers. Estimate gravel volume and weight easily.

Calculate laminate flooring needs based on room size, plank dimensions, layout type, and waste margin. Estimate planks easily.

Calculate how much paint you need based on area, number of coats, and coverage. Interior and exterior paint estimation made easy.

Estimate concrete needed for pile foundations. Calculate pile volume, optional pile caps, conversions, and waste margin.

Calculate the volume of water inside pipes based on diameter and length. Useful for plumbing and heating systems.

Estimate how much primer you need based on surface area, surface type, and number of coats. Prepare surfaces correctly before painting.

Calculate the amount of putty needed based on wall area, layer thickness, and number of layers. Estimate bags and material usage easily.

Calculate rebar quantity for slab reinforcement. Get number of bars, total rebar length, and weight based on spacing, diameter, and layers.

Calculate rebar weight from diameter and length, or convert weight to length. Includes kg per meter reference table.

Calculate the amount of sand needed for concrete or mortar. Estimate sand volume and weight easily.

Calculate slab foundation concrete volume with slab thickness, optional thickened edges, unit conversion, and waste margin.

Calculate staircase dimensions including number of steps, riser height, tread depth, and stair angle for comfortable stairs.

Estimate strip foundation concrete volume using building dimensions, footing width/height, and optional internal walls.

Calculate the number of tiles needed for floors or walls based on surface size, tile dimensions, layout type, and waste margin.

Calculate wall surface area for painting, plastering, wallpaper, or insulation. Includes options to subtract doors and windows.