Calcolatore di Tegole

Ultimo aggiornamento: 2026-06-23

Usa il Calcolatore di Tegole per ottenere risultati precisi. Inserisci i valori qui sotto.
Dati di ingresso
Risultati
Inserisci i valori e premi Calcola
Common Sizes — Click to Fill
Lunghezza del tetto (m) Larghezza del tetto (m) Pendenza del tetto Tegole per pacco (pcs)
8 m 5 m 4 33 pcs
10 m 7 m 4 33 pcs
12 m 8 m 6 33 pcs
15 m 10 m 6 33 pcs
20 m 12 m 8 33 pcs
Related
Calcolatore di Cartongesso Calcolatore di Isolamento Calcolatore Scalini in Cemento Calcolatore Calcestruzzo in Massa

Cos'è il Roofing Shingle Calculator?

Ordering the wrong amount of roofing shingles is an expensive mistake — shingles are sold in bundles and squares, and prices vary widely. Too few and the job stops mid-roof; too many and you're paying for materials you'll never use. The Roofing Shingle Calculator accounts for your roof's actual pitch using the pitch factor formula, so you get an accurate bundle count for sloped roofs of any angle.

You may also find the Drywall Calculator, Insulation Batt Calculator, and Concrete Steps Calculator useful.

Chi usa questo calcolatore?

This tool is used by homeowners re-roofing a house, roofers estimating material costs, and contractors preparing bids.

Come usare the Roofing Shingle Calculator

  1. Inserisci Roof length.
  2. Inserisci Roof width.
  3. Inserisci Roof pitch.
  4. Inserisci Shingles per bundle.
  5. Fai clic su Calcola per vedere i risultati immediatamente.

Formula

The calculator uses the following formula:

Pitch factor = sqrt(1 + (pitch/12)²); Roof area = L × W × pitch_factor; Bundles = ceil(area ÷ 9.29 × 3)

Esempio di calcolo

A roof that is 12 m long × 8 m wide with a 6/12 pitch has a pitch factor of 1.118, giving an actual area of 107 m². That requires approximately 35 bundles (3 bundles per square, where 1 square = 9.29 m²).

Calcolo passo dopo passo

  1. Flat footprint: 12 m × 8 m = 96 m²
  2. Pitch factor for 4/12 pitch: sqrt(1 + (4/12)²) = 1.054
  3. Actual roof area: 96 × 1.054 = 101.2 m²
  4. Roofing squares (1 square = 9.29 m²): 101.2 ÷ 9.29 = 10.9 squares
  5. Bundles (3 per square + 10% waste): ceil(10.9 × 3 × 1.1) = 36 bundles

Errori comuni da evitare

  • Using the floor footprint area instead of actual roof surface area
  • Forgetting to account for roof pitch when ordering materials
  • Not adding 10-15% for waste, valleys, and hip cuts
Pro Tip: Always order 10–15% extra for waste, ridge caps, hips, and valleys. Shingles from the same production run have matching colour — mixing runs can cause visible colour differences.

Domande frequenti

What is a roofing square?
A roofing square equals 100 square feet (about 9.29 m²). Most shingles come 3 bundles per square, though premium architectural shingles may need 4 bundles per square.

How does roof pitch affect material quantities?
Steeper roofs have more actual surface area than their footprint suggests. A 12/12 pitch (45°) requires 41% more shingles than a flat area of the same floor dimensions.

What is the pitch factor and how is it calculated?
Pitch factor = √(1 + (pitch/12)²). For a 6/12 pitch: √(1 + 0.25) = 1.118. Multiply your floor area by this factor to get actual roof surface area.

Do I need to include the overhang in my measurements?
Yes — measure the full roof surface including any eave overhang, not just the building footprint. Overhangs typically add 15–30 cm per side.

How long do asphalt shingles last?
Standard 3-tab shingles last 20–25 years. Architectural (dimensional) shingles last 30–50 years. Metal roofing can exceed 50 years. Lifespan depends on climate, ventilation, and installation quality.

Scritto e revisionato dal team editoriale di CalcToWork. Ultimo aggiornamento: 2026-06-23.

calcto.work — Calculated on 2026-06-23