Ceiling Pitch Calculator

Convert reflected ceiling plan lengths to actual sloped ceiling lengths

1. Starting Height (Low Point)

The lowest point of the sloped ceiling above the finished floor.

2. Peak Height

The highest point of the sloped ceiling above the finished floor.

3. Reflected Ceiling Plan Length

The horizontal run as dimensioned on the reflected ceiling plan.

Pitch Diagram
Flat Plan Length (A)Rise (B)Actual Ceiling Length (C)Low PointPeak

C = √(A² + B²)

Rise (B)Flat Plan Length (A)Actual Ceiling Length (C)
Results

Enter the RCP Flat Length above to see results

Starting Height and Peak Height are optional — leave at 0 for a flat ceiling.