Construction calculators

Estimate room heating capacity from floor area, ceiling height, temperature rise, and insulation quality.

Calculate rectangular area, total quantity, waste allowance, square yards, and square metres.

Estimate tile count, area, and boxes from surface and tile dimensions with grout and waste allowance.

Relate concrete volume and mass using the selected material-density preset.

Calculate cylindrical or rectangular hole volume and an ordering allowance.

Estimate bricks and mortar materials using wall, joint and mix inputs.

Estimate concrete volume for a rectangular slab and add a waste allowance, with cubic-yard and bag totals.

Estimate concrete for round or rectangular columns and compare material quantities.

Estimate concrete volume and material quantities for the selected slab form.

Estimate a solid rectangular object’s volume and mass from its density.

Convert rectangular gravel-bed dimensions into material volume, tonnage and cost.

Estimate stone volume for rectangular or circular beds with an added allowance.

Estimate limestone fill volume, ordering allowance, mass and material cost.

Add up lumber volume, length and cost from actual piece dimensions.

Estimate decorative rock volume, mass and spending with an added allowance.

Estimate sand volume, mass and material cost for a rectangular fill.

Calculate mass and cost for rectangular or cylindrical solid stone pieces.

Estimate wall cladding panels, starter strip, J-channel, undersill and material cost.

Estimate asphalt volume, tonnage and material cost from a layer’s dimensions.

Estimate gravel quantity and material spending for a uniform rectangular layer.

Estimate base-course volume, mass and cost with a chosen additional-material percentage.

Calculate flooring coverage and estimate material cost with an allowance.

Estimate pavers and project costs from the area and paver dimensions.

Estimate fence post requirements from run length and spacing.

Estimate gravel volume, weight, and delivery tonnage from area, depth, and material density.

Estimate mulch volume and bag count from landscape area, depth, and bag size.

Calculate floor-area, open-space and usable-area ratios from entered areas.

Estimate bedding sand volume, mass and material cost.

Compare airflow volume per hour with the volume of a room.

Calculate board-foot volume from lumber dimensions and quantity.

Estimate plywood sheet quantities and cost from coverage and sheet dimensions.

Estimate pea gravel volume, mass and cost using a chosen bulk density.

Relate tool diameter, rotational speed, tooth count and feed per tooth.

Convert a chosen air-change target into a nominal volumetric airflow.

Relate thread pitch, measured length and threads per inch.

Find full cone depth from top diameter and included angle.

Calculate ramp geometry from a selected ratio or your own rise and run.

Convert roof rise and run into pitch and angle, or calculate an unknown dimension.

Estimate sloped roof area, roofing squares, bundles, and waste from plan dimensions and roof pitch.

Estimate riser count, actual rise, tread run, staircase length, and stringer length.

Calculate the internal capacity of a pipe and the mass of its contents.

Estimate water volume for a round pool using diameter and average depth.

Estimate wall and ceiling coverage, subtract openings and calculate panel quantities.

Estimate wall paint after subtracting doors and windows, with coats and coverage.

Estimate siding area for different wall shapes after subtracting openings.

Calculate a liquid flow rate from collected volume and elapsed time.

Estimate pool water volume and fill cost from average depth.