# Construction calculators

> Construction quantity calculators for concrete, bricks, cement, sand, tiles, paint, roofing, stairs, excavation and reinforcement.

Page: https://calculators.geekmidst.com/categories/construction

- [Concrete Calculator](https://calculators.geekmidst.com/calculators/concrete-calculator.md): Calculate the concrete volume for a slab or round column in cubic metres, cubic feet and cubic yards, with a waste allowance and multiple pours.
- [Brick Quantity Calculator](https://calculators.geekmidst.com/calculators/brick-quantity-calculator.md): Count the bricks for a wall from its length, height, openings, brick size and joint thickness, with mortar volume and a waste allowance.
- [Cement Bags for Concrete Calculator](https://calculators.geekmidst.com/calculators/cement-bags-for-concrete-calculator.md): Turn a concrete volume and a nominal mix such as 1:2:4 into cement bags, sand and coarse aggregate, using a dry-volume factor and your bag size.
- [Sand Quantity for Mortar Calculator](https://calculators.geekmidst.com/calculators/sand-quantity-for-mortar-calculator.md): Work out the sand (volume and weight) and cement bags for a given volume of mortar from the mix ratio, a dry-volume factor and material densities.
- [Wall Plastering Quantity Calculator](https://calculators.geekmidst.com/calculators/wall-plastering-quantity-calculator.md): Estimate cement bags and sand for cement-sand plaster from the wall area, openings, plaster thickness, mix ratio and a dry-volume factor.
- [Steel Rebar Weight Calculator](https://calculators.geekmidst.com/calculators/steel-rebar-weight-calculator.md): Find reinforcing bar weight from diameter, length and number of bars using steel density, in kg per metre, lb per foot and total kg, lb or tonnes.
- [Rebar Spacing Calculator](https://calculators.geekmidst.com/calculators/rebar-spacing-calculator.md): Lay out reinforcing bars across a slab or footing: number of bars for a maximum spacing and end cover, the equal spacing, steel area per metre and total length.
- [Floor Tile Waste Calculator](https://calculators.geekmidst.com/calculators/floor-tile-waste-calculator.md): Work out how many floor tiles and boxes to buy from the room size, tile size and joint width, with a waste allowance for cuts and breakage.
- [Paint Coverage Calculator](https://calculators.geekmidst.com/calculators/paint-coverage-calculator.md): Estimate the paint for a room from its size, doors, windows, number of coats and the coverage on the tin, in litres, US gallons and cans.
- [Excavation Earthwork Calculator](https://calculators.geekmidst.com/calculators/excavation-earthwork-calculator.md): Calculate excavation volume for a pit or trench with vertical or sloped sides, the loose volume after swell and the number of truckloads to haul it away.
- [Foundation Concrete Calculator](https://calculators.geekmidst.com/calculators/foundation-concrete-calculator.md): Add up the concrete for pad footings and strip (wall) footings in one go, with a waste allowance, in cubic metres, cubic yards and cubic feet.
- [Pile Concrete Volume Calculator](https://calculators.geekmidst.com/calculators/pile-concrete-volume-calculator.md): Estimate concrete for bored or cast-in-place piles from diameter, length and number, with over-pour above cut-off and an over-consumption allowance.
- [Site Cut and Fill Volume Calculator](https://calculators.geekmidst.com/calculators/site-cut-and-fill-volume-calculator.md): Estimate cut, fill and the net earthwork balance for a site from spot levels on an equal grid, a formation level and a fill shrinkage allowance.
- [Stair Rise and Run Calculator](https://calculators.geekmidst.com/calculators/stair-rise-and-run-calculator.md): Find the number of risers and treads, the exact riser height, total run, stringer length, pitch angle and the 2R + G comfort check for a straight stair.
- [Water Tank Volume Calculator](https://calculators.geekmidst.com/calculators/water-tank-volume-calculator.md): Work out the capacity of a rectangular, vertical cylindrical or horizontal cylindrical tank, and how much water it holds at a given depth, in litres and gallons.
- [Roof Pitch Calculator](https://calculators.geekmidst.com/calculators/roof-pitch-calculator.md): Convert a roof’s rise and run into pitch (x in 12), angle in degrees, percentage grade, slope factor and rafter length, in any unit.
- [Roof Shingle Quantity Calculator](https://calculators.geekmidst.com/calculators/roof-shingle-quantity-calculator.md): Estimate roof area from the plan size and pitch, then roofing squares and shingle bundles with a waste allowance.
- [Asphalt Road Tonnage Calculator](https://calculators.geekmidst.com/calculators/asphalt-road-tonnage-calculator.md): Work out asphalt tonnage from paved length, width, compacted thickness and mix density, in metric tonnes and US short tons, plus volume and area.
- [Paver Block Quantity Calculator](https://calculators.geekmidst.com/calculators/paver-block-quantity-calculator.md): Count paver blocks for a patio, path or driveway from the area, paver size and joint width, with a waste allowance and the bedding sand volume.
- [Grout Requirement Calculator](https://calculators.geekmidst.com/calculators/grout-requirement-calculator.md): Estimate tile grout in kg, lb and bags from the tiled area, tile size, joint width and depth, and grout density, with a waste allowance.
- [Waterproofing Area Calculator](https://calculators.geekmidst.com/calculators/waterproofing-area-calculator.md): Calculate the waterproofing area for a wet room, balcony or roof including wall upturns, and the membrane or coating needed from coverage and coats.
- [Drywall Sheet Count Calculator](https://calculators.geekmidst.com/calculators/drywall-sheet-count-calculator.md): Count drywall or plasterboard sheets for a room’s walls and ceiling from its size, openings and sheet size (4×8, 4×12 ft or 1200 mm boards), with waste.
- [Insulation R-Value Calculator](https://calculators.geekmidst.com/calculators/insulation-r-value-calculator.md): Add up the thermal resistance of up to three layers from thickness and conductivity (or R per inch), plus surface films, and get the R-value and U-value.
- [Heat Loss Through Wall Calculator](https://calculators.geekmidst.com/calculators/heat-loss-through-wall-calculator.md): Calculate conductive heat loss through a wall, roof or window from its area, U-value or R-value and the temperature difference, plus energy over a period.
- [HVAC Cooling Load Estimate Calculator](https://calculators.geekmidst.com/calculators/hvac-cooling-load-estimate-calculator.md): Estimate a room’s cooling load from conduction, sun through windows, occupants, equipment and outside air, in kW, Btu/h and tons of refrigeration.
- [Window Glass Area Calculator](https://calculators.geekmidst.com/calculators/window-glass-area-calculator.md): Work out window opening area, visible glass area after the frame, total glass to order for single, double or triple glazing, and the weight of the glass.
- [Scaffolding Material Estimate Calculator](https://calculators.geekmidst.com/calculators/scaffolding-material-estimate-calculator.md): Estimate the tube-and-fitting or system scaffold components for a façade: standards, ledgers, transoms, boards, base plates and braces from length and height.
- [Labour Productivity Calculator](https://calculators.geekmidst.com/calculators/labor-productivity-calculator.md): Work out construction labour productivity as output per labour-hour and labour-hours per unit, and compare it with the rate in your estimate.
- [Construction Cost Escalation Calculator](https://calculators.geekmidst.com/calculators/construction-cost-escalation-calculator.md): Escalate a construction cost estimate to the midpoint of construction using an annual escalation rate you choose, and see the escalation allowance.
- [Construction Retention Calculator](https://calculators.geekmidst.com/calculators/construction-retention-calculator.md): Calculate retention held on an interim valuation, apply an optional limit as a share of the contract sum, and work out the net payment due.
- [Contingency Budget Calculator](https://calculators.geekmidst.com/calculators/contingency-budget-calculator.md): Add design and construction contingency percentages to a base cost to get the contingency sum, the total budget and contingency as a share of it.
- [Reinforcement Lap Length Calculator](https://calculators.geekmidst.com/calculators/reinforcement-lap-length-calculator.md): Turn a lap multiplier from your design code into a lap length, count the laps along a bar run and add the lapped steel length and weight.
- [Cable Tray Fill Calculator](https://calculators.geekmidst.com/calculators/cable-tray-fill-calculator.md): Find the cross-sectional fill of a cable tray from the cable diameters and tray size, compare it with the limit you set and see how many more cables fit.
- [Electrical Conduit Fill Calculator](https://calculators.geekmidst.com/calculators/electrical-conduit-fill-calculator.md): Check conduit fill from the conduit’s internal diameter and the conductor diameters, against a fill limit you take from your wiring code.
- [Plumbing Pipe Flow Calculator](https://calculators.geekmidst.com/calculators/plumbing-pipe-flow-calculator.md): Find the water velocity, friction head loss and pressure drop in a full pipe from the bore, flow rate, length and Hazen–Williams C factor.
- [Drainage Slope Calculator](https://calculators.geekmidst.com/calculators/drainage-slope-calculator.md): Work out the fall a drain needs for a given gradient, or the gradient from a measured fall, as a percentage, 1 in N, mm per metre and degrees.
- [Rainwater Harvesting Tank Calculator](https://calculators.geekmidst.com/calculators/rainwater-harvesting-tank-calculator.md): Estimate how much rainwater a roof can collect in a year and size a storage tank to cover your daily demand through the longest dry spell.
- [Solar Rooftop Area Calculator](https://calculators.geekmidst.com/calculators/solar-rooftop-area-calculator.md): Work out how many solar panels a target system size needs, the roof area they take up, and the largest system that fits on the roof you have.
- [Construction Equipment Rental Cost Calculator](https://calculators.geekmidst.com/calculators/construction-equipment-rental-cost-calculator.md): Find the cheapest mix of daily, weekly and monthly hire rates for a rental period, then add delivery, damage waiver and sales tax for the total.
- [Concrete Curing Time Plan Calculator](https://calculators.geekmidst.com/calculators/concrete-curing-time-plan-calculator.md): Turn a pour date and your specified periods into calendar dates for the end of curing, formwork striking, prop removal and cube or cylinder tests.
- [Construction Schedule Float Calculator](https://calculators.geekmidst.com/calculators/construction-schedule-float-calculator.md): Calculate an activity’s total float and free float from its early start, duration, late finish and the earliest start of its successors.
- [Material Waste Rate Calculator](https://calculators.geekmidst.com/calculators/material-waste-rate-calculator.md): Measure construction material waste from quantities delivered, installed and returned, as a share of delivered and as the allowance to add to net quantities.
- [Ceiling Panel Count Calculator](https://calculators.geekmidst.com/calculators/ceiling-panel-count-calculator.md): Count the suspended-ceiling tiles a room needs from its size and the tile size, with a waste allowance, the number of boxes and wall angle lengths.
- [Door Frame Material Calculator](https://calculators.geekmidst.com/calculators/door-frame-material-calculator.md): Work out the jamb and head cutting lengths for door frames, the total timber length, and how many stock lengths to buy when the cuts are nested.
- [Window Frame Length Calculator](https://calculators.geekmidst.com/calculators/window-frame-length-calculator.md): Work out the frame, mullion and transom profile lengths for a set of windows and how many stock bars to buy when the cuts are nested.
- [Fence Post Quantity Calculator](https://calculators.geekmidst.com/calculators/fence-post-quantity-calculator.md): Count fence posts, bays and rails for one or more straight fence sections at a maximum post spacing, for an open run or a closed loop.
- [Carpet Roll Quantity Calculator](https://calculators.geekmidst.com/calculators/carpet-roll-quantity-calculator.md): Find the length of carpet to cut from a roll of a given width for a rectangular room, laying strips in whichever direction uses the least carpet.
- [Adhesive Coverage Calculator](https://calculators.geekmidst.com/calculators/adhesive-coverage-calculator.md): Work out how much tile, flooring or wall adhesive an area needs from the consumption rate on the datasheet, with waste, and how many packs to buy.
- [Wallpaper Roll Count Calculator](https://calculators.geekmidst.com/calculators/wallpaper-roll-count-calculator.md): Count the wallpaper rolls a room needs from wall width and height, roll size and pattern repeat, using the drops-per-roll method decorators use.
- [Wall Stud Quantity Calculator](https://calculators.geekmidst.com/calculators/wall-stud-quantity-calculator.md): Count the studs for a timber or metal stud wall from its length and stud spacing, with extras for openings and corners, plus top and bottom plate lengths.
- [Floor Load Distribution Calculator](https://calculators.geekmidst.com/calculators/floor-load-distribution-calculator.md): Distribute a uniform floor load to joists by tributary width: line load per joist, total load, end reactions and the maximum bending moment of a simple span.
- [Square Footage Calculator](https://calculators.geekmidst.com/calculators/square-footage-calculator.md): Work out square feet, square metres, square yards and acres for rectangles, circles, triangles, trapezoids and L-shaped rooms, with optional cost.
- [Stair Calculator](https://calculators.geekmidst.com/calculators/stair-calculator.md): Work out the number of steps, the exact riser height, total run, stair angle and stringer length from the floor-to-floor rise and your step sizes.
- [Roofing Calculator](https://calculators.geekmidst.com/calculators/roofing-calculator.md): Estimate the sloped area of a roof from its footprint and pitch, then the roofing squares and shingle bundles to order, with a waste allowance.
- [Tile Calculator](https://calculators.geekmidst.com/calculators/tile-calculator.md): Work out how many tiles you need for a floor or wall from its size, the tile size and grout joint, with a waste allowance and boxes to buy.
- [Gravel Calculator](https://calculators.geekmidst.com/calculators/gravel-calculator.md): Estimate the gravel or crushed stone needed for a driveway, path or base from its size and depth, in cubic metres, cubic yards, tonnes and US tons.