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Roofing Area Calculator

Formula: Length x Width x Pitch factor

Example

Formula: Length x Width x Pitch factor
= 8 m x 6 m x 1.1 pitch factor
= 52.80 m2

Enter length and width units and a pitch factor, then choose a result unit (m2 or ft2).

Tip: Choose your result unit on the right before calculating.

Step-by-step calculation

  1. Enter roof length and width with units.
  2. Enter a pitch factor for slope and select the result unit.
  3. Calculate to see roof area and steps in the selected unit.

FAQ

What is pitch factor?
It adjusts area for roof slope; steeper roofs need more.
Where to find pitch?
Use a roof pitch chart or building plans.

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