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Calculateur de Surface de Pièce

Calculez la surface en m² et le périmètre linéaire pour estimer vos plinthes et matériaux de rénovation.

Mesures du Projet

Entrez vos dimensions pour calculer les matériaux nécessaires

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

Entrez les mesures ci-dessus pour afficher le résultat.

Exemple de Calcul Étape par Étape

Scénario: 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.

Variables de la Formule

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

Hypothèses de Calcul

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

Foire Aux Questions

Questions fréquentes sur les projets de rénovationCalculateur de Surface de Pièce

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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