Kai Roofing Calculator
Calculate the surface area of your roof
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How to calculate the roof area from house area and pitch
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How to calculate the pitch from rise and run
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How to calculate the roof area of a gabled roof
(current)
Units:
ft
m
yd
in
cm
Home
Cross Gabled roof area calculator
Roof area calculator
-
Cross Gabled
No pitch required (how
)
Simple roof
One small dormer
One large dormer
Two small dormers
Two large dormers
Mixed dormers
* 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:
L1
L2
l1
H
Calculate
*
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 Shingles
Roof Lengths
AH = HG = CD = DE =
...
BI = FI =
...
AB =
...
BC =
...
EF =
...
GF =
...
HI =
...
ID =
...
Roof Surfaces
ABIH =
...
BCDI =
...
DEFI =
...
FGHI =
...
Roof Slopes
ABIH = BCDI = DEFI = FGHI
Slope Grade =
... %
Angle =
... deg
Pitch =
... x12
* 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:
L1
L2
l1
H
Small dormer:
Lu 0
Lu 1
h
Calculate
*
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 Shingles
Roof Lengths
AH = HG = CD = DE =
...
BI = FI =
...
AB =
...
BC =
...
EF =
...
GF =
...
HI =
...
ID =
...
Roof Surfaces
ABIH =
...
BCDI =
...
DEFI =
...
FGHI =
...
Roof Slopes
ABIH = BCDI = DEFI = FGHI
Slope Grade =
... %
Angle =
... deg
Pitch =
... x12
* 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:
L1
L2
l1
H
Large dormer:
Lu 0
Lu 1
Lu 2
h
Calculate
*
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 Shingles
Roof Lengths
AH = HG = CD = DE =
...
BI = FI =
...
AB =
...
BC =
...
EF =
...
GF =
...
HI =
...
ID =
...
Roof Surfaces
ABIH =
...
BCDI =
...
DEFI =
...
FGHI =
...
Roof Slopes
ABIH = BCDI = DEFI = FGHI
Slope Grade =
... %
Angle =
... deg
Pitch =
... x12
* 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:
L1
L2
l1
H
Small dormer:
Lu 0
Lu 1
h
Small dormer 2:
Lu 3
Lu 4
h 2
Calculate
*
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 Shingles
Roof Lengths
AH = HG = CD = DE =
...
BI = FI =
...
AB =
...
BC =
...
EF =
...
GF =
...
HI =
...
ID =
...
Roof Surfaces
ABIH =
...
BCDI =
...
DEFI =
...
FGHI =
...
Roof Slopes
ABIH = BCDI = DEFI = FGHI
Slope Grade =
... %
Angle =
... deg
Pitch =
... x12
* 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:
L1
L2
l1
H
Large dormer:
Lu 0
Lu 1
Lu 2
h
Large dormer 2:
Lu 4
Lu 5
Lu 6
h 2
Calculate
*
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 Shingles
Roof Lengths
AH = HG = CD = DE =
...
BI = FI =
...
AB =
...
BC =
...
EF =
...
GF =
...
HI =
...
ID =
...
Roof Surfaces
ABIH =
...
BCDI =
...
DEFI =
...
FGHI =
...
Roof Slopes
ABIH = BCDI = DEFI = FGHI
Slope Grade =
... %
Angle =
... deg
Pitch =
... x12
* 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:
L1
L2
l1
H
Large dormer:
Lu 0
Lu 1
Lu 2
h
Small dormer:
Lu 4
Lu 5
h 2
Calculate
*
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 Shingles
Roof Lengths
AH = HG = CD = DE =
...
BI = FI =
...
AB =
...
BC =
...
EF =
...
GF =
...
HI =
...
ID =
...
Roof Surfaces
ABIH =
...
BCDI =
...
DEFI =
...
FGHI =
...
Roof Slopes
ABIH = BCDI = DEFI = FGHI
Slope Grade =
... %
Angle =
... deg
Pitch =
... x12
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