CAL// FOR THE TOOLS
MEASURE ONCE.
DRAWN RIGHT.
95 construction calculators with live measured drawings, running set-out lists and 3D assemblies.
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Roof & rafters
Common rafterRafter length, rise, birdsmouth and live cutting diagram.Hip roof framingPlan rafters, hips, jacks and material lengths.Gable roof framingGable dimensions, rafters, ridge and cutting list.Lean-to roofSingle-pitch roof rise, run and rafter set-out.Gambrel roofTwo-pitch gambrel frame geometry and joints.Saltbox roofAsymmetric roof frame and rafter dimensions.Rafter cut templatesFull-scale plumb, seat and side-cut templates.Soffit dropHorizontal soffit, fascia and drop geometry.Hip and valley sheetingSheet layout and diagonal cutting dimensions.Bullnose roofingCurved roof sheet length and pitch transition.Spouting & downpipesRectangular roof catchment, peak flow and equal outlet tributaries.
Stairs & balustrades
Straight stairsEven risers, total run, stringer marks and headroom.Spiral stairsTread rotation, rise and central column geometry.Steel spine stairsSpine set-out, brackets and tread positions.Baluster spacingEqual baluster gaps and on-tread positions.Stair panel layoutEqual raked panel openings with measured rails, stiles and cut blanks.Access rampOne straight ramp flight, entered landings and a measured footprint.
Centers & spacing
Equal spacingCenters, clear gaps and a running mark-out list.Board and battenEqual field spacing for any wall length.Glass balustrade panelsFixed-width panels with balanced clear gaps.Wainscoting layoutBalanced stile positions and clear panel widths.Shelf and drawer spacingShelf heights with thickness and equal end openings.Wall framing quantitiesA straight wall with full-height end studs, equal centres and continuous plates. Openings are handled separately.Opening layoutOne rectangular rough opening. Enter the header depth from the approved design; this sets out members and does not size structural headers.Kerf bendingOutside radius and saw-cut geometry. Remaining skin and grain flexibility need a test piece; hold the board to the target curve.Rebar spacingStraight bars in both directions, equal centres within the selected maximum. Add lap, bend and anchorage allowances from the design.Fastener set-outBalanced running marks for fixings.
Concrete & masonry
Concrete slabSlab volume, order quantity, weight and cost.Slab with edge beamsRectangular slab and thickened edge volumes.Concrete block quantitiesBlocks by wall area, courses and openings.Block wall circleRectangular blocks, tapered joints and course set-out.Masonry archArch voussoir layout and cut dimensions.Concrete by the bagBagged-mix count for small pours.Excavation & truck loadsBank and loose volumes with swell and loads.Strip footingTrench concrete with readymix and bags.Brick quantitiesBricks by wall area, courses and waste.Starter barsBlock core alignment and starter positions.Brick gauge and bondCourse gauge, joint size and bond set-out.Pipe & drainage fallStraight invert fall, depths below a level datum and every peg position.
Metal & tubing
Round tube notchPrintable branch-to-tube coping pattern.Round tube miterAngled end miter wrap template.Tube through sheetHole profile through sloped sheet material.Tube bendBend allowance, tangent points and set-out.Pie-cut bendSegment count, cut angle and developed length.Round-to-square reducerTransition panels and full-scale patterns.Square tube miterPlanar miter for matching rectangular tube sections.Three-way square-tube cornerEqual square sections meeting on three perpendicular axes.
Printable templates
ProtractorPrintable custom-size degree protractor.Circle dividerEqual divisions, chords and cutting angles.Circle templateFull-scale circle across tiled print pages.Arc templateLarge-radius printable arc set-out.Oval templatePrintable true ellipse and oval layouts.Cone patternFlat development for frustums and cones.Bolt circleEqual hole positions and drill template.Diameter tapeWraparound tape that reads diameter directly.
Decks & fencing
Deck subframeBearers, joists, boards and measured set-out.Deck board layoutBoard count, gaps, cuts and cost.Fence posts and panelsPost centers, panel widths and quantities.Arched fence palingsIndividual paling heights along an arc.Paling fence railsRail joins, post positions and paling count.Gazebo roof and floorPolygon gazebo rafters, floor and plan geometry.Post holes & concreteConcrete after post displacement, bag orders and hole set-out.Decking screwsFixings from the board and joist grid.
Convert & measure
All-unit converterConvert common site lengths from any listed unit.Pitch, rise & angleMove between angle, percent grade and pitch ratios.Length converterMetric, imperial and decimal lengths.Area converterSquare units, hectares and international acres.Volume converterCubic units, litres, US liquid and imperial gallons.Weight converterMetric and avoirdupois workshop weights.Scale from imageRecover real dimensions from a known feature.Fraction and decimalNearest reduced fraction within your denominator limit.Bubble levelDevice angle and rise-over-run level.Quote markup & GSTCost to quoted price with markup, GST and margin.
General geometry
Arc & circleCircumference, chord, segment angle and full diagram.Square-up diagonalRectangle diagonals and corner verification.Golden ratioGenerate related golden-section dimensions.PyramidSlant, edge and face dimensions.Gothic archPointed arch centers and radius layout.Curved moldingSegment widths and miter angles for curved trim.Diagonal bracingBrace length, cut angle and offsets.Compound miterSaw settings and cut wrap for equal sloping panels.
Materials & quantities
Tile layoutBest fit, equal edge cuts, joints and tile quantity.Floor areaRectangular floor area, perimeter and diagonal.Tile quantity and costTile, box, waste and budget estimate.Weatherboard claddingEqual course cover, overlap, set-out and lineal quantity.Circular paving patioRectangular paver layouts, curved edge cuts and orders.Circular paving ringTapered pavers, constant side joints and a cutting template.Timber linear to cubicConvert section and length to material volume.Lumber board-foot pricePrice per thousand board feet and per piece.Paint coverageLitres, coats and cans for a wall.Plasterboard sheetsSheet count, screws and compound.Skirting & trimLineal trim around a room in stock lengths.Insulation battsBatts and packs for an area.Wallpaper rollsDrops, trim and straight-match pattern repeat.Soil & mulchCubic metres, bags and tonnes.