Square Footage Calculator – Room and Area
Calculate square footage for any room or space.
About This Calculator
Calculate square footage for any room or space. Use the calculator above for instant results.
Worked Examples
Example 1: 20ft × 15ft room
- 20 × 15 = 300 sq ft
Answer: 300 sq ft
Example 2: 12ft × 10ft bedroom
- 12 × 10 = 120 sq ft
Answer: 120 sq ft
Example 3: 50ft × 30ft commercial space
- 50 × 30 = 1,500 sq ft
Answer: 1,500 sq ft
Who Uses This Calculator?
Homeowners
Measure room for flooring or paint.
Contractors
Calculate material quantities.
Real Estate
Verify property square footage.
DIYers
Plan home improvement projects.
Common Mistakes to Avoid
❌ Measuring walls vs floor
Square footage of a room = floor area (length x width), not wall area.
❌ Irregular rooms
Break into rectangles, calculate each, add them together.
Frequently Asked Questions
How to measure sq ft?
Measure length and width in feet, multiply. For irregular rooms, break into rectangles.
Sq ft to sq meters?
Multiply by 0.0929. 300 sq ft = 27.87 m².
Average room sizes?
Bedroom: 120-200 sq ft. Living room: 200-400 sq ft. Master bedroom: 200-300 sq ft.