HomeToolPilot CALCULATORS & PLANNERS
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Innenbereich & Wohnen

Raumflächenrechner

Berechnen Sie die Grundfläche in Quadratmetern und den Raumumfang für Fußleisten und Deckenleisten.

Projektmaße

Geben Sie Ihre Maße ein, um den genauen Materialbedarf zu berechnen

(ft)
(ft)
2D DRAFTING PLAN15 FT × 12 FT (180 SQ FT)
15 FT12 FT180 SQ FT

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Schritt-für-Schritt Beispielrechnung

Beispiel: Calculating dimensions for a 12 ft × 15 ft living room.

01

Calculate Area: 15 ft × 12 ft = 180 sq ft.

02

Calculate Perimeter: 2 × (15 + 12) = 54 linear feet.

03

Calculate Diagonal: √(15² + 12²) = √(225 + 144) = √369 = 19.21 ft.

04

Add 10% Flooring Buffer: 180 × 1.10 = 198 sq ft.

Result: Room area is 180 sq ft (16.7 m²) with 54 linear feet of perimeter for baseboards.

Room Area & Perimeter Formula

Area = Length × Width; Perimeter = 2 × (Length + Width); Diagonal = √(Length² + Width²)

Square footage is Length multiplied by Width. Perimeter is the total boundary length. The diagonal measurement utilizes the Pythagorean Theorem to verify whether a room is true 90-degree square.

Formelvariablen

Area — Total floor or ceiling surface in square feet (or square meters)
Perimeter — Linear footage around the room walls
Diagonal — Corner-to-opposite-corner distance

Berechnungsgrundlagen

  • For rectangular rooms, Area = Length × Width.
  • Multiply square footage by 1.10 for 10% standard material waste.
Trade FAQ

Häufig Gestellte Fragen

Typische Fragen von Heimwerkern und RenovierernRaumflächenrechner

How do I calculate the square footage of a room?

Measure the length and width of the room in feet. Multiply length by width. For example, a 10 ft by 12 ft room has a square footage of 120 sq ft (10 × 12 = 120).

How do I check if my room corners are square?

Measure diagonally from corner to opposite corner in both directions. If both diagonal measurements are identical, your room corners are true 90-degree square.

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