How to use this calculator
- Enter Ceiling perimeter in ft.
- Enter Stick length in ft.
- Press Calculate. The highlighted row is your order quantity; the note beneath it translates the number into real-world terms.
Formula & constants
Crown = ceiling perimeter + 15% waste — compound miters scrap more than baseboard. Buy a couple of feet extra for test cuts when learning the spring angle. Every default in the fields above is editable — when your supplier’s spec sheet lists a different density, coverage rate or price, enter that number instead. The waste and compaction allowances follow common trade practice; see our methodology page for the derivation of each formula and the standards it references.
Where this fits in the project
Interior finishing runs framing-out: studs, insulation, drywall, then paint and floor coverings. Measure once and reuse the same wall and floor areas across each material takeoff.
How this connects to your project
No quantity stands alone — each material in the chain depends on the ones around it. These are the planning steps that pair with the crown molding calculator:
- Drywall Calculator — Crown molding covers the drywall-ceiling junction.
- Paint Calculator — Crown molding is typically painted.
- Baseboard Calculator — Crown at ceiling, baseboard at floor — complete trim package.
Frequently asked questions
Why is crown waste higher than baseboard?
Compound miters fail more often, and both ends of many pieces are angle-cut — 15% is realistic for first-timers.
What is a spring angle?
The angle crown leans off the wall — 38° or 45° typically. Cut settings depend on it; check the profile spec.
Last verified: — prices reflect current national averages. See our methodology.
Estimates are for planning. Material densities, coverage rates and prices vary by region and supplier — confirm final quantities before ordering, and check local code where structural or electrical work is involved.