Calculating square footage is essential for estimating interior design costs, material requirements, and space planning. Here’s how you can do it step by step.

1. Formula for Calculating Square Feet

Square Feet (sq. ft.) = Length (ft.) × Width (ft.)

🔹 Example: If a living room is 12 feet wide and 15 feet long,
👉 12 × 15 = 180 sq. ft.

2. Calculating Square Footage for Different Spaces

Measure each room separately and add them together for the total area.

A. Home Interiors Calculation

Room Type	Average Size (ft.)	Square Footage (sq. ft.)
Living Room	12 × 15	180 sq. ft.
Bedroom 1	10 × 12	120 sq. ft.
Bedroom 2	10 × 12	120 sq. ft.
Kitchen	8 × 10	80 sq. ft.
Bathroom 1	6 × 8	48 sq. ft.
Bathroom 2	5 × 7	35 sq. ft.
Hallway & Other Areas	–	100 sq. ft.
Total Area	–	683 sq. ft.

B. Office & Commercial Space Calculation

Measure each functional area separately (e.g., workstations, meeting rooms, reception).

Area	Average Size (ft.)	Square Footage (sq. ft.)
Reception Area	10 × 12	120 sq. ft.
Workstations	20 × 25	500 sq. ft.
Conference Room	12 × 15	180 sq. ft.
Manager’s Cabin	10 × 12	120 sq. ft.
Pantry	8 × 10	80 sq. ft.
Total Office Area	–	1,000 sq. ft.

3. Calculating Square Feet for Irregular Shapes

For L-shaped or irregular rooms, break the space into smaller rectangular sections, calculate each, and then add them together.

🔹 Example:
If a room has a main section (10 × 12 ft.) and an attached area (5 × 6 ft.):
👉 Main Area: 10 × 12 = 120 sq. ft.
👉 Attached Area: 5 × 6 = 30 sq. ft.
👉 Total Area: 120 + 30 = 150 sq. ft.

4. How to Use Square Footage in Interior Design

✔ Cost Estimation: Most designers charge per sq. ft., so knowing your area helps estimate the budget.
✔ Material Calculation: Flooring, paint, wallpaper, and ceiling materials are all priced per sq. ft.
✔ Furniture Planning: Helps determine furniture layout and spacing for an organized design.

Would you like a cost estimate based on your home’s square footage? 😊