Calculate the surface area of your roof

Roof area calculator

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Gable

No pitch required (how )
Roof calculator - Gable
* This image is to clarify which is the rise of the roof (H) and the rise of the dormer (h). The image is for general informational purpose.
3D

Your roof dimensions:

L
l
H
* L is the length of the roof
* l is the width of the roof
* H is the rise (height) of the roof (3D image)
* For decimal dimensions, use the dot notation! (.)

Total Roof area:

...

Roof Lengths

AB = FC = ED = ...
BC = CD = EF = FA = ...
roof

Roof Surfaces

ABCF = CDEF = ...

Roof Slopes

ABCF = CDEF
  • Slope Grade = ... %
  • Angle = ... deg
  • Pitch = ... x12
Roof calculator - Gable
* This image is to clarify which is the rise of the roof (H) and the rise of the dormer (h). The image is for general informational purpose.
3D

Your roof dimensions:

L
l
H
Small dormer:
Lu 0
Lu 1
h
* L is the length of the roof
* l is the width of the roof
* H is the rise (height) of the roof (3D image)
* For decimal dimensions, use the dot notation! (.)

Total Roof area:

...

Roof Lengths

AB = FC = ED = ...
BC = CD = EF = FA = ...
roof

Roof Surfaces

ABCF = CDEF = ...

Roof Slopes

ABCF = CDEF
  • Slope Grade = ... %
  • Angle = ... deg
  • Pitch = ... x12
Roof calculator - Gable
* This image is to clarify which is the rise of the roof (H) and the rise of the dormer (h). The image is for general informational purpose.
3D

Your roof dimensions:

L
l
H
Large dormer:
Lu 0
Lu 1
Lu 2
h
* L is the length of the roof
* l is the width of the roof
* H is the rise (height) of the roof (3D image)
* For decimal dimensions, use the dot notation! (.)

Total Roof area:

...

Roof Lengths

AB = FC = ED = ...
BC = CD = EF = FA = ...
roof

Roof Surfaces

ABCF = CDEF = ...

Roof Slopes

ABCF = CDEF
  • Slope Grade = ... %
  • Angle = ... deg
  • Pitch = ... x12
Roof calculator - Gable
* This image is to clarify which is the rise of the roof (H) and the rise of the dormer (h). The image is for general informational purpose.
3D

Your roof dimensions:

L
l
H
Small dormer:
Lu 0
Lu 1
h
Small dormer 2:
Lu 3
Lu 4
h 2
* L is the length of the roof
* l is the width of the roof
* H is the rise (height) of the roof (3D image)
* For decimal dimensions, use the dot notation! (.)

Total Roof area:

...

Roof Lengths

AB = FC = ED = ...
BC = CD = EF = FA = ...
roof

Roof Surfaces

ABCF = CDEF = ...

Roof Slopes

ABCF = CDEF
  • Slope Grade = ... %
  • Angle = ... deg
  • Pitch = ... x12
Roof calculator - Gable
* This image is to clarify which is the rise of the roof (H) and the rise of the dormer (h). The image is for general informational purpose.
3D

Your roof dimensions:

L
l
H
Large dormer:
Lu 0
Lu 1
Lu 2
h
Large dormer 2:
Lu 4
Lu 5
Lu 6
h 2
* L is the length of the roof
* l is the width of the roof
* H is the rise (height) of the roof (3D image)
* For decimal dimensions, use the dot notation! (.)

Total Roof area:

...

Roof Lengths

AB = FC = ED = ...
BC = CD = EF = FA = ...
roof

Roof Surfaces

ABCF = CDEF = ...

Roof Slopes

ABCF = CDEF
  • Slope Grade = ... %
  • Angle = ... deg
  • Pitch = ... x12
Roof calculator - Gable
* This image is to clarify which is the rise of the roof (H) and the rise of the dormer (h). The image is for general informational purpose.
3D

Your roof dimensions:

L
l
H
Large dormer:
Lu 0
Lu 1
Lu 2
h
Small dormer:
Lu 4
Lu 5
h 2
* L is the length of the roof
* l is the width of the roof
* H is the rise (height) of the roof (3D image)
* For decimal dimensions, use the dot notation! (.)

Total Roof area:

...

Roof Lengths

AB = FC = ED = ...
BC = CD = EF = FA = ...
roof

Roof Surfaces

ABCF = CDEF = ...

Roof Slopes

ABCF = CDEF
  • Slope Grade = ... %
  • Angle = ... deg
  • Pitch = ... x12

Comments:

#
Posts are reviewed by an admin beofore showing on the website.
Loredana
Ce treaba are înălțimea cu suprafața plana a acoperișului? Calculam aria nu volumul
Alex (admin)
Domana Loredana: - din inaltime deducem inclinatia pantei. Suprafata acoperisului difera in functie de panta. Spre ex, un acoperis foarte inalt, are o suprafata mai mare decat unul foarte plat - pe aceeasi amprenta la sol. Pentru mai multe lamuriri, puteti rasfoi sectiunea de articole de pe siteul nostru. Numai bine.

How do we calculate the surface area of the roof?

We calculate the roof area by splitting it into geometric shapes, we determine the surface area of each individual shape and then we add them up together.

Some roofing calculators use Pitch and House Area but unfortunately, this approach is not the most precise way to get the roof area because you cannot use it for more roof shapes.

Other roofing calculators ask for a lot of dimensions in order to determine a more precise total roof area.

Our approach is to try and determine a pretty precise roof area by asking only for the minimal dimensions. We determine the other dimensions from the ones you provide by doing mathematical calculations in the background.

Happy roofing worker
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