The Surface Area of a Roof calculator computes the surface area of a roof based on the length, width and the pitch. Single and Double sided Gabled Roofs
INSTRUCTION: Choose units and enter the following:
Area (A): This calculator computes area in square feet or other area units, or
The formula works for gabled roofs (two sided) and single sided roofs (see diagram). For gabled roofs, this formula is only accurate if the both gables have the same pitch, which puts the ridge in the middle. For roofs with different pitches, calculate each side separately.