Square Footage Calculator – Calculate Room & Area Size Online
Use our free Square Footage Calculator to calculate room size, floor area, wall dimensions, property measurements, and construction space instantly online.
Total Area
Square Feet
Square Meters
Square Yards
What Is a Square Footage Calculator?
A Square Footage Calculator is an online tool that calculates the area of rooms, homes, offices, walls, properties, and construction spaces in square feet.
- Calculate room dimensions
- Estimate flooring area
- Measure wall surface area
- Plan construction projects
- Calculate landscaping space
Features of Our Square Footage Calculator
Multiple Shapes
Supports rectangle, square, triangle, and circle calculations.
Instant Results
Calculate square footage immediately without page reloads.
Multiple Units
Supports feet, meters, and yards.
Mobile Friendly
Works perfectly on phones, tablets, and desktop devices.
How Square Footage Is Calculated
Different formulas are used depending on the selected shape.
- Rectangle = Length × Width
- Triangle = Base × Height ÷ 2
- Circle = π × Radius²
Example Square Footage Calculations
| Space Type | Dimensions | Total Area |
|---|---|---|
| Bedroom | 12 ft × 10 ft | 120 ft² |
| Living Room | 20 ft × 15 ft | 300 ft² |
| Garage | 24 ft × 20 ft | 480 ft² |
| Circle Patio | Radius 8 ft | 201 ft² |
Frequently Asked Questions
Calculate Square Footage Instantly
Instantly calculate room size, floor area, property measurements, and construction space online using our free Square Footage Calculator.