Crown Moulding Miter and Bevel Angles Calculator for Compound Miter Saw Settings
for Horizontal Crown to Rake Crown with Corner Transition Piece

The Crown Molding Miter Angle and Bevel Angle calculator will print out the Miter Angle and Saw Blade Bevel Angles for corner angles 0-360 and spring angles 0-90.

Spring Angle
Degrees input: use any crown spring angle in degrees like 38.00°

Wall Corner Angle
This is the wall corner angle of the building. Most crown wall corners are at 90°. This is measured in the horizontal plane.

Roof Slope Angle
This is the roof slope angle of the building. See below for typical roof slope angles. This is measured in the vertical plane. An 8:12 roof pitch is = 33.69007° You can enter 33.69007° or the total vertical plane angle as 123.69007° (90° + 33.69007° = 123.69007°) Use your angle finder if you don't know the roof slope angle. The Wall Corner Angle Must be at 90° to calculate the correct Roof Slope Angle.
If the crown transition piece is for a 45° wall angle, do not use the 45° wall to measure the total vertical plane angle. The calculator will calculate the correct slope of the 45° wall based on the roof slope angle. The 45° wall vertical plane slope angle would be the same the hip rafter slope angle.

Calculated Results for the Crown Molding Angles. 

  1. Crown Miter Angle for material laying flat in compound miter saw
  2. Crown Saw Blade Bevel Angle for material laying flat in compound miter saw
  3. Crown Nested in compound miter saw

Calculate Spring Angle.
Use the Spring Angle Calculator to enter the rise and run of the crown molding to calculate the spring angle for the crown molding your using.

Roof  Pitch  in Inches per Rise of  Roof in 1 Foot of Run -- Roof Slope Angles