Civil engineering and structures
Roof rafter length
Helper calculation of geometric rafter length from run and rise; it is not code-based design.
Related calculators
Roof angle from rise and run
Calculates roof pitch angle as arctangent of rise divided by run.
Roof area from plan and slope
Calculates sloped roof area from plan area and roof angle plus required material area with waste.
Roof area from plan area and angle
Converts roof plan area into approximate sloped roof area using the pitch angle.
Roof slope percent
Calculates roof slope percent from rise and horizontal run.
Wall area with openings
Helper calculation of net wall area after subtracting openings; it is not code-based design.
Stair riser height
Calculates single riser height from total rise and riser count.