Get the numbers right
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Plan quantities and dimensions from your measurements.

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- Room furniture plannerPlace rectangular furniture by dimensions and coordinates, with a live floor plan and overlap checks.
- Siding clapboard calculatorCount clapboard courses from exposed height, then whole boards per course.
- Sod calculatorRound required turf area plus your waste allowance up to whole rolls or pallets.
- Solar panel calculatorEstimate daily energy = rated array kW × equivalent peak-sun hours × retained fraction.
- Stair calculatorDivide total rise into equal risers and calculate the run for one fewer tread than risers.
- Tank volume calculatorCalculate liquid volume at a measured fill depth in a horizontal circular cylinder.
- Tile calculatorTiles = surface area ÷ coverage per tile × (1 + allowance ÷ 100), rounded up.
- Trim moulding calculatorCount stock lengths for separate trim runs when offcuts are not reused between runs.
- Wainscoting layout calculatorDivide a wall into equal panel openings while keeping your chosen outer margins and spaces.
- Wallpaper calculatorCount full wallpaper drops and rolls, rounding each drop up to your pattern repeat.