Crown Molding Calculator
Calculate crown molding measurements, cutting angles, and materials needed for your project. Get precise instructions and cost estimates for any room.
Step 1: Room Dimensions
Room Measurements
Accurate room dimensions are crucial for calculating the correct amount of molding and proper cutting angles. Measure all walls at ceiling height.
Step 2: Molding Details
About Crown Molding
Crown molding connects walls and ceilings at an angle. Standard inside corners are 90°, requiring 45° cuts. Outside corners may vary based on room geometry.
Crown Molding Calculation Results
Total Project Cost
Crown Molding Cutting Angles
Cutting Instructions
For standard 90° corners: Set your miter saw to 45° for inside corners. For outside corners, cut at 45° in the opposite direction. Always test cuts on scrap material first.
Material & Cost Breakdown
Material Calculation Formula
Total Linear Feet = (Room Perimeter × Waste Factor) / Piece Length
Calculate room perimeter by adding all wall lengths. Multiply by waste factor (typically 10-20%) for cutting errors. Divide by standard molding length (usually 8-16 ft) to determine pieces needed.
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