Deckenleisten-Rechner

Zuletzt aktualisiert: 2026-06-23

Verwenden Sie den Deckenleisten-Rechner für genaue Ergebnisse. Geben Sie Ihre Werte ein.
Eingaben
Ergebnis
Geben Sie die Werte ein und klicken Sie auf Berechnen
Common Sizes — Click to Fill
Länge von die Raum (m) Breite von die Raum (m) Länge von jede pieza (m)
Small door 2.5 m 2 m 2.4 m
Standard door 3.75 m 3 m 2.4 m
Large door 5 m 4 m 2.4 m
Window 7.5 m 6 m 2.4 m
Bay window 10 m 8 m 2.4 m
Ähnliche Rechner
Fußleisten-Rechner Terrassendielen-Rechner Zaunlatten-Rechner Fenster-Rechner

Was ist der Crown Molding Calculator?

Crown molding runs along the ceiling perimeter of a room, and ordering the right linear metres is critical — molding is sold in fixed lengths (typically 2.4 m or 3.6 m) and joins are visible if you use short off-cuts. This calculator computes the room perimeter, adds 10% for angled cuts and waste, and tells you how many lengths to buy.

You may also find the Baseboard Calculator, Decking Calculator, and Fence Picket Calculator useful.

Wer nutzt diesen Rechner?

This tool is used by homeowners installing crown molding, finish carpenters quoting trim jobs, and interior designers specifying millwork.

Verwendung the Crown Molding Calculator

  1. Geben Sie Room length ein.
  2. Geben Sie Room width ein.
  3. Geben Sie Corner type ein.
  4. Geben Sie Molding piece length ein.
  5. Klicken Sie auf Berechnen, um die Ergebnisse zu sehen.

Formel

The calculator uses the following formula:

Perimeter = 2 × (length + width); Linear metres needed = perimeter × 1.1; Pieces = ceil(linear_m ÷ molding_length)

Rechenbeispiel

A 5 m × 4 m room with 90-degree corners requires 18 m of molding perimeter. Adding 10% waste gives 19.8 m — so buy 9 lengths of 2.4 m molding (21.6 m total).

Schritt-für-Schritt-Berechnung

  1. Room perimeter: 2 × (5 + 4) = 18 m
  2. Add 10% for mitre cuts and waste: 18 × 1.1 = 19.8 m
  3. Pieces of 2.4 m: ceil(19.8 ÷ 2.4) = 9 pieces

Häufige Fehler vermeiden

  • Not adding extra for mitre cuts — each inside corner wastes ~5 cm per piece
  • Forgetting to measure the height at which crown contacts the wall and ceiling
  • Ordering standard lengths without checking if longer pieces reduce waste
Pro Tip: Use a compound mitre saw for crown molding corners — the dual-angle cuts are difficult to do accurately with a standard mitre box. For large rooms, use longer molding lengths to minimise joins.

Häufig gestellte Fragen

How do I cut crown molding corners?
Crown molding corners require compound mitre cuts — typically 45° mitre and 33.9° bevel for 90-degree inside/outside corners. A dedicated crown molding mitre setting on your saw makes this easier. Test cuts on scrap before cutting good stock.

What is the waste allowance for crown molding?
10% is standard for rooms with 90-degree corners. Add 15–20% if the room has many corners or bay windows, since each corner requires angled cuts that waste material.

Should crown molding be nailed to studs or the top plate?
Crown molding should be nailed at 45 degrees into both the ceiling and wall — hitting studs and ceiling joists where possible. Use a stud finder first. Finish nails (50–65 mm) with a nail gun give the cleanest result.

How do I fill gaps between crown molding and the wall?
Use paintable latex caulk, not silicone. Apply a thin bead along the top and bottom edges, smooth with a damp finger, and paint after it dries. Small gaps (< 3 mm) are expected and easily caulked.

Can crown molding be installed on vaulted ceilings?
Yes, but it requires raking crown molding that runs at the slope of the ceiling, not horizontal. The calculations are more complex. For dramatic vaults, consider cove molding which is more forgiving to install.

Geschrieben und geprüft vom CalcToWork-Redaktionsteam. Letzte Aktualisierung: 2026-06-23.

calcto.work — Calculated on 2026-06-23