Room Size Calculator
Calculate area and perimeter for rectangular and L-shaped rooms.
Typical wastage is 5-10% for flooring/tiling, or higher for complex patterns/cuts.
4. Enter Dimensions
Rectangular Room (L x W)
Calculation Results
Enter your room dimensions and click ‘Calculate’ to see the results here.
Advanced Metrics (Material Estimation)
Total Area (Raw)
0.00 sq ft
Area with Wastage (5%)
0.00 sq ft
Perimeter (Baseboards/Trim)
0.00 ft
Room Size Calculator About
This Room Size Calculator is a free and easy online tool designed to help you instantly measure and estimate the size of any room. Whether you’re planning home renovation, installing flooring, arranging furniture, or calculating paint requirements, this calculator gives accurate square footage and room dimensions within seconds. Just enter the length and width, and the tool automatically provides the total area. Perfect for homeowners, builders, interior designers, and DIY users. Fast, simple, and highly accurate for all types of rooms.
