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Hip roof calculator

This calculator will help you estimate hip roof parameters, including rafters and roof area AntonArticle : Hip roof calculator - Author, Translator ru - enCalculator : Hip roof by roof raise, length and width - AuthorCalculator : Hip roof calculator - Author, Translator ru - en

One of users asked us to create calculator which will help him estimate hip roof parameters, like rafter's lengths, roof rise and roof area.

Here it is. To get results you need to provide roof base dimensions (length and width) and roof pitch (we assume it is identical for all sides). All formulae are below the calculator.

Roof base length (a)

Roof base width (b)

Roof pitch or roof slope (degrees)

Digits after the decimal point: 5
Common rafter length

Hip rafter length

Roof rise (h)

Roof area

Ridge board length (C)

Volume

Here we consider two types of hipped roofs (see picture):
1) Pyramid hip roof - roof base is a square, roof sides are identical isosceles triangles
2) Hip roof - roof base is a rectangle, two sides are identical isosceles triangles and two sides are identical trapeziums.

• Roof rise:
• Common rafters:
• Hip rafters: - pythagoras theorem
• Roof area:

Here you can calculate hip roof parameters by hip raise and base parameters. Hip roof by roof raise, length and width

Roof base length (a)

Roof base width (b)

Digits after the decimal point: 5
Angle

Hip rafter length

Roof area

Common rafter length

Ridge board length (C)

Volume