Compound Miter Saw Crown Molding Angles Calculator
Calculate exact miter angle and bevel angle settings for cutting crown molding flat on a compound miter saw table across standard 38°, 45°, and 52° spring angles and any wall corner angle (90°, 135°, or out-of-square).
Crown Molding & Wall Geometry
Angle between the wall and the flat back bevel of the molding.
°
90° for square room; 135° for bay window.
Miter Saw Settings (Laying Flat)
STANDARD SAW DETENT
MITER ANGLE
31.6°
BEVEL ANGLE
33.9°
Place molding flat on table with top edge against fence
Left Corner Piece Setup
Miter RIGHT 31.6°, Bevel LEFT 33.9°. Save left end of cut.
Right Corner Piece Setup
Miter LEFT 31.6°, Bevel LEFT 33.9°. Save right end of cut.
Compound Cutting Best Practices
Always make a 4-inch test cut in scrap material first. Because sheetrock drywall corners are rarely exactly 90.0° due to mud buildup, measuring the true angle with a digital protractor guarantees tight, gap-free joints.