# Hip Roof Area Calculator

Hip roof is a roof with a sharp edge or edges from the ridge to the eaves where the two sides meet. Here is the online hip roof area calculator which helps you calculate the hip roof parameters such as roof rise, common and hip rafters length and roof area based on width, height of roof base and the roof pitch (identical for all sides). Calculating the dimensions of the hip roof rise and area would be very easy and time saving using this calculator.

## Calculate Roof Rise and Area

Hip roof is a roof with a sharp edge or edges from the ridge to the eaves where the two sides meet. Here is the online hip roof area calculator which helps you calculate the hip roof parameters such as roof rise, common and hip rafters length and roof area based on width, height of roof base and the roof pitch (identical for all sides). Calculating the dimensions of the hip roof rise and area would be very easy and time saving using this calculator.

Code to add this calci to your website

#### Formula:

H = (B x tan α) / 2
Common Rafters = B / (2 x cos α)
Hip Rafters = √(H^{2} +(B^{2} / 2))
Hip Roof Area = 2 x Common Rafters x Roof Base Length
**Where,**
H = Roof Rise
B = Roof Base Width
α = Roof Pitch
tan = Tangent
cos = Cosine
### Example:

If the length and width of the Roof base is 100m and 70m and roof pitch is 45 degrees

#### Solution:

Roof Rise (H) = (B x tan α) / 2

= (70 x tan 45) / 2

= 35m

Common Rafters (R) = B / (2 x cos α)

= 70 / (2 x cos 45)

= 49.4975m

Hip Rafters = √(H^{2} +(B^{2} / 2))

= √(35^{2} + (70^{2} / 2))

= 60.6218m

Hip Roof Area = 2 x R x Roof Base Length

= 2 x 60.6218 x 100

= 9899.494m^{2}