L-Shape Square Foot Calculator

What is L-shape square footage?

L-shape square footage equals the sum of two rectangle areas. Split the L-shape into 2 rectangles, calculate each area with length × width, and add the results. For free-form lot layouts, see the irregular shape calculator or uneven sides calculator.

Getting started

How to Calculate L Shape Square Footage

To calculate L-shape square footage, divide the L-shape into 2 distinct rectangles labeled A and B. Measure each rectangle and apply length × width. Sum both areas for total L-shape square footage.

1. Split into 2 rectangles

Divide the L-shape into 2 rectangles. Label them A and B.

2. Calculate each rectangle

Apply length × width to each rectangle. A = a₁ × a₂, B = b₁ × b₂.

3. Add the two areas

Sum rectangle A area + rectangle B area for total L-shape square footage.

Quick reference

Reference

1 acre = 43,560 square feet

1 square yard = 9 square feet

1 square meter = 10.764 square feet

1 square inch = 0.00064516 square feet

Material pricing

Calculate Cost of Materials

L-shape area times price per unit equals material cost. Apply to L-shaped rooms, patios, kitchens, or gardens.

There are 2 steps to calculate material cost:

Enter the price per square foot of flooring, paving, or sod covering the L-shape.
The Square Foot Calculator multiplies the total L-shape area by your unit price for material total.

L-shape projects need careful cuts at the inside corner. Add 10-12% waste factor for flooring or tile.

Calculations for ‘L’ Shaped Rooms or Areas

Split an irregular shape or L-shaped room into two distinct rectangular sections. Calculate the square footage of each section separately using Length × Width, then add the two results together.

Example Calculation

Section A is 10 ft by 5 ft (50 sq ft). Section B is 6 ft by 4 ft (24 sq ft). The total is 74 square feet. The Square Foot Calculator supports L-shape input directly — enter the dimensions for both rectangular sections and the calculator adds the areas automatically.

FAQ

Frequently Asked Questions

How do I calculate square footage for an L-shaped room?

Split the L into two rectangles, calculate each area (Length x Width), and add them together. The L Shape Calculator does this automatically when you enter dimensions for both sections.

How do I split an L-shaped room into rectangles?

Draw an imaginary line to divide the L into two rectangles. It doesn't matter where you split it; the total area will be the same regardless of how you divide it.

Can I use this for L-shaped kitchens?

Yes, L-shaped kitchens are one of the most common uses for this calculator. Enter the dimensions of both rectangular sections to get total floor area for flooring estimates.

How do I measure an L-shaped room?

Measure the full length and width of each rectangular section of the L. You'll need 4-6 measurements depending on the L-shape configuration.

What if my room has more than two sections?

For U-shapes or more complex layouts, calculate each rectangular section separately and add the areas. Use the quantity feature to process multiple sections.

How do I estimate flooring for an L-shaped room?

Calculate the total L-shape square footage and add 10-15% for waste. L-shaped rooms typically need extra material due to additional cuts at the corner.

REFERENCES

L-Shape Square Foot
Calculator — Split Room Tool

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