Construction calculators
Works in your browser. Nothing is uploaded.Roofing calculator
Turn a roof’s plan size and pitch into its true area and roofing squares, with the shingle bundles, underlayment and edge trim to buy.
What to buy
–
Shingle bundles–
- Underlayment rolls–
- Drip edge–
- Starter strip–
- Ridge cap–
ft
ft
in 12
in
%
ft²
Bundles
–
Squares
–
Construction calculators
ConcreteSlabs, footings and columns, in bags of your size.StairsRisers, treads and stringersDrywallSheets, screws and tapeTileTiles, adhesive and groutPaintCans for walls and ceilingsDeck boardsBoards, joists and screwsGravel and mulchBags or bulk for an areaBricks and blocksCount and mortar for a wallRoofingSquares, bundles and underlaymentRafter lengthFrom span, pitch and overhang
How to use it
- Pick the roof
Gable, hip or shed, in feet or metres.
- Type the plan
The building’s length and width, the pitch and the overhang at the eaves.
- Read what to buy
Bundles, underlayment rolls, drip edge, starter strip and ridge cap.
Tips
- Measure on the ground
Measure the building’s plan from the ground. The pitch makes the roof larger than its plan.
- Bundles
Most shingles come three bundles to a square of 100 ft². Check the wrapper.
- Waste
10% extra covers the cuts on a simple roof. Valleys, dormers and hips take more.
In the app
Construction tools in Clinometer
- Read the roof’s angle with the phone’s sensors
- A drawing of each job, with the sizes on it
- What to buy, with the code to look for on the label
- Shopping lists to tick off or send to To-do
Get it onGoogle PlayComing soon to the App Store
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