Solar Panel Tilt Calculator
Estimate simple annual and seasonal solar-panel tilt targets, roof-angle difference, raised-edge height and preliminary racking cost.
Default project preview
32 degrees
Summer tilt
17°
Winter tilt
47°
Existing roof angle
18.4°
Tilt difference
+13.6°
Calculator
Build the material order
Your order will appear here
Enter the project details and calculate a rounded material estimate.
Methodology
Transparent calculation
BuildMeter converts every input to a consistent internal unit, applies the selected allowance, and rounds products up to whole purchasable units.
Annual tilt is absolute latitude plus the entered adjustment. Summer and winter targets subtract or add the seasonal adjustment. Raised-edge height uses array length × sin(tilt difference).
FAQ
Solar Panel Tilt Calculator questions
Is latitude always the best fixed tilt?+
No. It is a simple starting point. Energy tariffs, seasonal demand, orientation, shading and local weather may favor another angle.
Should panels be raised above an existing roof?+
Not automatically. Flush mounting often reduces cost and wind loading even when roof pitch differs from the simple target.
Does the raised-edge result size structural supports?+
No. It shows geometry only. Racking and roof attachments require engineered product and structural verification.