Crown Molding Calculator
Calculate linear feet, pieces, miter cuts, and splice joints for crown molding installation.
Crown Molding Calculator
Linear feet, pieces, and miter cuts for crown molding
Room Dimensions
Molding Details
Installation Tips
• Inside corners: cope one piece against a butted piece for best fit
• Outside corners: miter both pieces at 45° using a miter saw
• Scarf joints (butt/splice): overlap at 45° for invisible seams on long walls
• Always cut test pieces to verify angles before cutting molding stock
Materials
Cuts & Joints
Formulas Used
Pieces Needed
Room perimeter with waste factor, divided by the stock molding length.
Perimeter
Standard rectangular room perimeter.
Crown Molding Installation Guide
Measuring for Crown Molding
Measure each wall separately for best accuracy. Add all wall lengths for total perimeter, then add waste factor.
Joint Types
| Joint | Where Used | Method | |-------|-----------|--------| | Cope | Inside corners | Cut profile, fit against butted piece | | Miter | Outside corners | 45° miter on both pieces | | Scarf | Long walls (splice) | 45° overlapping cut for invisible seam |