How this crown molding calculator works
Room perimeter is adjusted for any open sections, then a miter/waste allowance is applied before converting the total into whole stock lengths.
How to use it
- Room length. Enter the value in ft.
- Room width. Enter the value in ft.
- Open wall sections to subtract. Enter the value in ft.
- Stock piece length. Enter the value in ft.
- Miter/waste allowance. Enter the value in %.
- Request the result. Add your email, then select “Email & show my result.”
What to do with the number
Crown molding often needs more cutting allowance than baseboard because corner miters and scarf joints consume usable length. Measure every wall segment individually in rooms with bump-outs, angled walls or built-ins.
Planning estimate
Use this result as a starting point, not a guarantee. Product specifications, site conditions, manufacturer guidance, local codes, taxes, labor, tolerances, and rounding can change the real requirement or cost.