Roof Square Calculator

How many roof squares do I have?

ft
ft
in

Your roof measures

13.8squares

A square is 100 sq ft of roof surface. No waste is included, so use the roofing calculator for an order.

6 in 12 pitch26.6 degrees1,232 sq ft footprint
Footprint1,232 sq ft
Slope multiplier1.118
Roof surface1,377 sq ft

Find the actual roof surface in squares from a footprint and pitch.

How it works

Length × width × slope multiplier ÷ 100.

Before you order

  • Roofers quote by the square, so have this number when you call.
  • Use eave-to-eave footprint including overhangs for a better figure.
  • Split a complicated roof into rectangles and add them up.

Common questions

What is a roof square?

100 square feet of roof surface.

Does pitch change roof squares?

Yes. A steeper pitch means more surface over the same footprint.