How accurate is this result?

It is a practical planning estimate based on the visible assumptions. Product specifications and real-world conditions can vary.

Can I change the assumptions?

All editable assumptions appear as calculator inputs. Fixed assumptions are listed on the page.

Calculators

Roof Shingle Calculator

Estimate roofing coverage and whole shingle packs from measured roof area.

Answer with the example values

Measured Area: 15 · Required Quantity: 16.5 · Purchase Units: 6 · Purchase Quantity: 18

Formula: Estimate roofing coverage and whole shingle packs from measured roof area. The method uses the entered values in consistent units and rounds only the final purchase quantity.

Assumptions: Enter the actual sloped roof dimensions, not floor footprint. Valleys, hips and complex cuts need a larger allowance.

Vul je gegevens in en kies Berekenen.

Your answer and the practical quantities behind it will appear here.

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Amazon

Aanbevolen benodigdheden

Flooring installation kit

Floor spacers

Tape measure

Als Amazon-partner verdienen we aan in aanmerking komende aankopen.

Formule en methode

Estimate roofing coverage and whole shingle packs from measured roof area. Bereken wat je nodig hebt, hoeveel je nodig hebt en wat je moet kopen.

Aannames en beperkingen

Enter the actual sloped roof dimensions, not floor footprint.
Valleys, hips and complex cuts need a larger allowance.

Rekenvoorbeeld