construction Calculators
Last updated: May 2026
Concrete Volume Calculator
Estimate how many cubic metres of concrete to order for a rectangular slab, footing, or path.
Brick Quantity Calculator
Estimate how many bricks you need to cover a wall, dividing total wall area by the face area of one brick.
Paint Coverage Calculator
Calculate how many litres of paint you need for a job, given the area to cover, the number of coats, and the spread rate of your specific paint.
Roof Area Calculator
Calculate the true sloped surface area of a roof from its footprint dimensions and pitch angle.
Tile Quantity Calculator
Estimate how many tiles you need for a floor or wall, including a built-in 10% allowance for cuts and breakage.
Lumber Board Feet Calculator
Compute the board footage of a lumber piece from thickness, width, and length so you can price and order materials accurately.
Insulation R-Value Calculator
Compute the total thermal resistance (R-value) of an insulation layer from its thickness and material-specific R-value per inch.
Drywall Sheets Calculator
Estimate how many drywall sheets you need to cover a given wall or ceiling area, given the standard sheet size you plan to use.
Stair Rise and Run Calculator
Compute the rise per step of a staircase given total floor-to-floor height and the number of steps, with code-compliance checks.
Rebar Weight Calculator
Estimate the weight of steel reinforcement bar (rebar) from its size and total length for material ordering and crane-load planning.
Excavation Volume Calculator
Determines the cubic volume of soil to remove for a rectangular excavation.
Gravel Tonnage Calculator
Calculates the tonnage of gravel required to cover a given area at a specified depth.
HVAC BTU Calculator
Estimates the BTU per hour needed to heat or cool a room based on its size, ceiling height, and insulation quality.
Fence Materials Calculator
Calculates the number of fence posts needed for a given fence length and post spacing.
Window Replacement Cost Calculator
Estimates the total cost of a window replacement project based on the number of windows, window type, and per-window labour cost.
Concrete Footing Calculator
Calculates the cubic yards of concrete needed for rectangular foundation footings.
Roofing Shingle Calculator
Calculates the number of roofing squares needed to cover a roof, including a user-defined waste allowance.
Deck Joist Spacing Calculator
Calculates the number of joists needed across a deck's width based on the on-center spacing.
Pipe Pressure Loss Calculator
Estimates pressure loss due to friction in plumbing pipes based on length, flow rate, and diameter.
Steel Beam Weight Calculator
Calculates the total weight of a steel I-beam based on its length and per-foot weight rating.
Concrete Volume & Cost Calculator
Estimate how many cubic yards of concrete you need for a slab, pad, or footing — plus total material cost with waste and delivery.
Roofing Materials Cost Calculator
Estimate total roofing material cost for any pitched roof by entering footprint dimensions, roof pitch factor, material price, and waste allowance.
Drywall Materials Calculator
Count the exact number of drywall sheets needed for walls and ceiling of a room, minus door and window openings, with a 10% waste allowance built in.
Excavation Cost Calculator
Estimate earthmoving volume in cubic yards and total excavation cost by entering pit dimensions, soil difficulty, and contractor pricing.
Insulation Cost Calculator
Estimate insulation material cost for walls, attics, or floors based on area, target R-value, insulation type, and installation method.
Flooring Cost Calculator
Estimate the total cost of flooring a room, including materials, installation, and waste.
Paint Coverage Calculator
Calculate the exact number of paint gallons required for any surface area, factoring in multiple coats and a configurable waste allowance.
HVAC Load Calculator
Estimate the heating or cooling capacity (BTUs) your room needs based on size, ceiling height, insulation, and climate.
Concrete Volume Calculator
Find out exactly how many cubic yards of concrete you need for a slab, footing, or pad.
Roofing Materials Calculator
Estimate the number of roofing squares (100 sq ft each) of shingles and underlayment needed for a roof job, factoring in pitch and waste.
Drywall Calculator
Determine how many drywall sheets you need to cover all walls and the ceiling of a room, with automatic deductions for doors and windows.
Lumber Cost Calculator
Calculates the number of studs and total lumber cost for framing a wall based on stud spacing, wall length, and current board-foot pricing.
Excavation Calculator
Calculates the cubic yards of soil to be removed and the total excavation cost for foundations, trenches, or grading projects.
Insulation Calculator
Estimates the cost of insulating walls, attics, or floors based on area, stud depth, insulation type, and price per square foot.
Flooring Calculator
Estimate the total cost of a flooring project by entering your room dimensions, flooring type waste factor, material price, and labor cost per square foot.
Roofing Material Calculator
Estimate the number of shingle bundles needed for a roofing project by entering the roof footprint, pitch multiplier, and coverage per bundle.
Concrete Slab Bag Calculator
Find out how many bags of pre-mixed concrete you need to pour a slab.
Multi-Room Paint Calculator
Estimate the gallons of paint needed for a whole project across several rooms.
Flooring Box Calculator
Work out how many boxes of laminate, tile, or vinyl plank to buy.
Drywall Sheet Estimator
Estimate how many drywall sheets a room needs, including the ceiling.
HVAC BTU Room Sizing Calculator
Size an air conditioner or mini-split to a room.
Roof Shingle Estimator (with Pitch)
Estimate the shingle bundles needed for a roof using the building footprint and the roof pitch.