Square Foot Calculator L Shape
Calculate the square footage of an L-shaped room or area. Enter dimensions for both rectangular sections to get the total area.
L-Shape Calculator
Split the L-shape into two rectangles and enter the dimensions of each.
Section 1
Section 2
Split into two rectangles.
Total = Section A + Section B
How to Calculate Square Footage of an L-Shaped Room
L-shaped rooms are extremely common in homes and apartments. The trick is to split the L into two rectangles, calculate each area separately, and add them together.
L-Shape Area Formula
Step-by-Step Instructions
- Sketch the L-shape on paper and draw a line to split it into 2 rectangles.
- Measure each rectangle — width and length in feet.
- Calculate each area — multiply width × length for both.
- Add both areas for the total square footage.
Example Calculation
Section A (main area): 14 ft × 10 ft = 140 sq ft
Section B (dining nook): 6 ft × 5 ft = 30 sq ft
140 + 30 = 170 square feet (15.79 sq m)
Tips
- You can split the L into 2 rectangles in different ways — the total area will be the same.
- Use a straight line along an interior corner to divide the shape.
- For U-shaped or T-shaped rooms, split into 3 rectangles instead.
Frequently Asked Questions
How do I calculate the area of an L-shaped room? +
Split the L-shape into two rectangles. Calculate the area of each (Length × Width) and add them together.
Does it matter how I split the L-shape? +
No. You can split the L into two rectangles in different ways — the total area will always be the same.
How do I measure an L-shaped room? +
Sketch the room on paper, draw a line to split it into 2 rectangles at the inner corner, then measure each rectangle's length and width.
Can I use this for T-shaped or U-shaped rooms? +
Yes! For T-shaped rooms, split into 3 rectangles. For U-shaped rooms, split into 3 rectangles as well. Add all areas together.