Construction & renovation
Stair calculator
Calculate steps, riser height, going, angle and the Blondel formula.
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Resources for “construction”
Discover 23 resources related to construction.
Tools
Construction & renovation
Decking calculator
Estimate decking boards, joists, fixings and waste.
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Screed calculator
Calculate screed volume, dry mix, cement, sand and bags.
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Brick calculator
Estimate bricks, joints, wall volume and mortar.
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Roof tile calculator
Calculate sloped roof area and the number of tiles required.
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Fence calculator
Calculate fence panels, posts and footing concrete.
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Render calculator
Calculate render area, kilograms and bags.
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Paver calculator
Calculate pavers, packs, joints and bedding volume.
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Concrete calculator
Calculate concrete volume and the cement, sand, gravel or bags required.
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Use this toolConstruction & renovation
Paint calculator
Calculate paintable area, litres required and paint containers to buy.
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Tile calculator
Calculate tiles, boxes and quantities to order.
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Use this toolConstruction & renovation
Concrete block calculator
Calculate concrete blocks, pallets and mortar bags for a wall.
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Use this toolConstruction & renovation
Gravel calculator
Calculate gravel volume, weight, bags or bulk bags to buy.
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Use this toolConstruction & renovation
Slope calculator
Convert slope between percent, degrees, rise, length and ratio.
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Drywall calculator
Calculate plasterboards, tracks, studs and screws for a partition or ceiling.
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Flooring and laminate calculator
Calculate packs, underlay, surplus and skirting boards for your floor.
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Thermal insulation calculator
Calculate area, volume, packs and thermal resistance R of insulation.
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Use this toolConstruction & renovation
Wallpaper calculator
Calculate drops and rolls from dimensions and pattern repeat.
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GuideBest practicesBeginner
How much concrete for a slab, foundation or posts?
Calculate concrete volume, site allowance and the quantity to order for slabs, footings, walls or cylindrical posts.
30 August 20262 minRead
TutorialBest practicesBeginner
Plan a construction project: calculate materials before buying
A practical method for estimating concrete, screed, bricks, render, fencing, decking and other materials before you order.
30 August 20264 minRead
GuideBest practicesBeginner
Plan a project: how to calculate the right material quantities?
A practical method for turning project dimensions into quantities to buy: areas, volumes, waste allowances, packaging and final checks.
30 August 20263 minRead
GuideBest practicesIntermediate
Calculate stairs: risers, rise, tread depth and slope
Learn how to size a staircase from total rise, number of risers, tread depth, available run and the Blondel relationship.
30 August 20262 minRead
GuideBest practicesIntermediate
How many roof tiles do you need? Area, pitch and waste
Estimate roof-tile quantities from the true roof area, pitch, effective tile coverage and an appropriate waste allowance.
30 August 20262 minRead