How do I calculate square footage on my phone?

All calculations convert automatically to square meters, square yards, square inches, and acres. Bookmark this page for quick on-site measurements on your phone or tablet.

Multi-Room Total

To calculate the total area of multiple rooms, calculate each room separately and add the results. For flooring projects, add a 10–15% waste factor to the combined total.

How to Use This Square Footage App

Choose a shape: Rectangle, circle, or triangle using the shape tabs.
Select your unit: Feet, inches, meters, or centimeters.
Enter dimensions: Type your measurements into the input fields.
See instant results: Area updates live as you type — no button press needed.
Copy the result: Note the square footage for your shopping list or quote.

Quick Square Footage Reference

Room Type	Avg. Size	Sq Ft
Bathroom	8 × 5 ft	40 sq ft
Bedroom	12 × 12 ft	144 sq ft
Living Room	16 × 20 ft	320 sq ft
Kitchen	12 × 14 ft	168 sq ft
Garage (2-car)	20 × 24 ft	480 sq ft

All Square Foot Calculators

Choose a specialized calculator for your specific project type.

Room Calculator

Calculate the square footage of any room. Includes presets for bedrooms, kitchens, bathrooms, and more.

Calculate Room Area →

Flooring Calculator

Figure out how much flooring material you need, including a waste factor for hardwood, laminate, vinyl, or carpet.

Calculate Flooring →

Tile Calculator

Calculate area and the exact number of tiles needed based on tile size and grout gap spacing.

Calculate Tiles →

Concrete Calculator

Calculate the area and volume of concrete needed in cubic yards, with adjustable depth/thickness.

Calculate Concrete →

Wall Calculator

Measure wall area for painting, wallpaper, or siding. Supports multiple walls and door/window deductions.

Calculate Wall Area →

Triangle Calculator

Calculate square footage for triangular spaces using base and height, with support for different triangle types.

Calculate Triangle →

Odd Shapes Calculator

Calculate area for irregular and L-shaped rooms by combining multiple rectangles, triangles, and circles.

Calculate Odd Shapes →

Feet & Inches Calculator

Enter dimensions using separate feet and inches fields for precise measurements without decimal conversion.

Calculate with Inches →

Map Calculator

Draw shapes on an interactive map to calculate the square footage of land, lots, and properties.

Calculate on Map →

Inches Calculator

Calculate square footage from inch-based measurements and convert the result to square feet.

Calculate Inches →

Height Calculator

Use height-based dimensions for walls, triangles, and other square footage projects.

Calculate with Height →

Circle Calculator

Find the square footage of circular areas from radius measurements.

Calculate Circle Area →

Rectangle Calculator

Calculate rectangular square footage from length and width for rooms, floors, and lots.

Calculate Rectangle →

Cylinder Calculator

Estimate area measurements for round projects and cylindrical surfaces.

Calculate Cylinder →

Driveway Calculator

Calculate driveway square footage for concrete, asphalt, gravel, or paver projects.

Calculate Driveway →

Roof Calculator

Estimate roof square footage for shingles, underlayment, and roofing materials.

Calculate Roof Area →

Garden Calculator

Measure garden beds, lawns, mulch areas, soil coverage, and landscaping spaces.

Calculate Garden Area →

House Calculator

Calculate house square footage for rooms, additions, renovations, and floor plans.

Calculate House Area →

Google Maps Area Calculator

Calculate land and property area with a map-style square footage calculator.

Calculate Map Area →

Price Per Sq Ft Calculator

Compare homes, materials, land, and projects by price per square foot.

Calculate Price →

Rent Per Sq Ft Calculator

Calculate rent per square foot for apartments, offices, retail, and warehouse spaces.

Calculate Rent →

Sq Ft to Acres Calculator

Convert square feet to acres for lots, land, fields, and property sizes.

Convert to Acres →

Sq Ft to Yards Calculator

Convert square feet to square yards for flooring, carpet, fabric, and materials.

Convert to Yards →

Sq Ft to Meters Calculator

Convert square feet to square meters for international area measurements.

Convert to Meters →

India Calculator

Calculate square footage for flats, plots, houses, flooring, and construction in India.

Calculate for India →

Frequently Asked Questions

Use this mobile-friendly square footage calculator. Enter your dimensions and get an instant result — no app download needed. Bookmark this page for quick access on any device.

This calculator supports rectangles, circles, and triangles. Use the shape tabs to switch between them. For complex shapes, use our odd shapes calculator.

Calculate each room individually, note the results, then add them together for a total. Our room calculator includes presets for common room types.

Yes. Select meters or centimeters from the unit tabs. The result converts to sq ft, sq meters, sq yards, and more simultaneously.

Yes. All calculators on this site are 100% free, with no login, registration, or subscription required.