Square Footage Calculator
Room area for flooring, paint and materials.
Enter your values
Results update instantly as you type — no submit needed.
Results
- Area
- 216 sq ft
- With waste allowance
- 237.6 sq ft
- In square metres
- 20.07
- Material cost
- $831.6
- Perimeter
- 60 ft
Quick answer
Square footage is length × width; add 10% waste for flooring cuts and pattern matching.
Area = length × width
How to use the Square Footage Calculator
- 1Measure the room's length and width in feet.
- 2Set a waste allowance for cuts.
- 3Add material price for a cost estimate.
Frequently asked questions
How much waste should I allow?
10% for straight-lay flooring, 15% for diagonal patterns and 20% for herringbone or heavily patterned material.
How do I handle L-shaped rooms?
Split them into rectangles, calculate each separately and add the areas together.