How to use this square footage calculator
Use this quick area calculator for rooms, floors, walls, patios and other rectangular surfaces.
How the calculation works
Area = length × widthAdvertisementGoogle AdSense placeholder
Example project
A 12 × 14 ft room contains 168 square feet.
Practical tips
- Break irregular shapes into rectangles.
- Keep dimensions in the same unit.
- Measure the actual usable area.
Frequently asked questions
How do I measure an irregular room?
Split it into rectangles, calculate each area and add them.
What is a square foot?
A one-foot by one-foot area.
Can it show metric?
Yes, switch to Metric.