Square Footage Calculator
Calculate square footage for any room or shape — rectangles, circles, triangles, L-shapes — with multi-room totals and cost estimates.
Tool Interface
Add a room or area
Total area
How to use
- Pick a shape and enter the measurements in feet, meters or inches.
- Click Add area — each room is listed with its own square footage.
- Add as many rooms as you need; the total updates automatically.
- Optionally enter a cost per square foot to estimate flooring, paint or turf costs.
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About This Tool
Measure Any Room and Total the Area
The Square Footage Calculator computes the area of rooms and spaces in square feet and more. Pick a shape (rectangle, square, circle, triangle or L-shape), enter the measurements in feet, meters or inches, and click Add area. Each room is listed with its own square footage, and the total updates automatically as you add more.
Optionally enter a cost per square foot to estimate flooring, paint or turf costs, with five currencies supported. It is perfect for renovation planning, real estate and DIY projects. The tool is free and needs no signup.
How to Use the Square Footage Calculator
Four steps to your total area.
- Pick a shape: Choose rectangle, square, circle, triangle or L-shape for the room or area.
- Enter measurements: Type the dimensions in feet, meters or inches. Name the room if you like.
- Click Add area: The room joins the list with its own square footage.
- Total and cost: Add as many rooms as needed. Enter a cost per square foot for a project estimate.
Area Formulas Used
- Rectangle: Area = length times width.
- Square: Area = side times side.
- Circle: Area = pi times radius squared.
- Triangle: Area = half times base times height.
- L-shape: Split into two rectangles and summed for you.
Key Features
- Five shapes: Rectangle, square, circle, triangle and L-shape.
- Three unit systems: Feet, meters and inches.
- Room by room list: Every area tracked separately with a running total.
- Cost estimates: Optional price per square foot with five currencies.
- Free and instant: No signup, no cost, unlimited rooms.
Frequently Asked Questions (FAQ)
Is the Square Footage Calculator free? Yes. It is completely free with no signup.
How do I measure an L-shaped room? Pick the L-shape option. The tool handles the split into rectangles for you.
Can I use meters? Yes. Enter measurements in feet, meters or inches.
How does the cost estimate work? Enter what you pay per square foot for flooring, paint or turf, and the tool multiplies it by the total area.
Can I add multiple rooms? Yes. Add as many as you need. The total updates automatically.
Do I need an account? No. The calculator works instantly with no signup.
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